Re: [Zope] subfolder wrong absolute_url
Ulrich Wisser wrote: The path is used by the browser, not Zope. IE and Netscape will store your login/password to send it with every GET request which is in the path, e.g.: authenticate on / - path is / - all request will be with auth info authenticate on /sub - path is / - see above authentivate on /sub/ - path is /sub/ - only request with /sub/ will be with auth info But all this is done by the browser. I believe the folder object should give a trailing "/" as absolute url. In that case, you're right :-) However, any Zope object can potentially have sub-objects or attributes. As far as a browser is concerned, the any zope object can look like a folder at some point. Add acquisition into the mix, and you can make a URL to a valid object have other stuff on the end to an arbitrary length. Therefore, your suggestion above should apply to just about all URLs Zope receives. If Zope receives a request for "/spam/spam/foo" it should always issue a redirect (or whatever code it should be) to "/spam/spam/foo/" -- regardless of whether foo is of Folder type, ObjectManager type or DTML method type, or whatever. Are there any downsides to having this behaviour for all objects/all URLs? Or perhaps there could be some kind of per-path switch inside Zope that turns the redirect behaviour on or off. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Zope/Apache Image Catalog
Tom Scheidt wrote: Hi I want to be able to upload images into a folder on Apache using a form page in Zope, and at the same time have the ids cataloged with keywords into a ZCatalog. Basically, to be able to search on keywords and have the related images displayed on a page. Does anyone have any recommendations, or know of any examples of this? Thanks in advance. What follows is a terse answer explaining how I'd go about it, but giving no information about how to accomplish each of the steps. sorry I can't offer any more right now. Hope it helps. Create a ZClass that represents the metadata of your image objects -- that is, Path to the image on Apache Keywords Each time someone enters an image, save the image via LocalFS to a filesystem folder accessible from Apache, and create an instance of your metadata ZClass. Your metadata ZClass should derive fom CatalogAware. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] detect root folder
Sin Hang Kin wrote: Hi, Is it possible to detect the top folder in dtml? I means I would like to prevent squishdot to show the ../ when it is already in the top level. dtml-if "_.len(PARENTS) == 1" We're at the root folder dtml-else You can go up from here /dtml-if -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Advocacy FAQ?
srl wrote: So, I was hanging out on IRC last night, and mentioned Zope to someone who's fairly active in the Python community. I ended up receiving a rant about how "bloated" and slow Zope is... "Slow" is a relative term. Zope will always be slower than hard-coding an application in Python. For the kind of applications I have, I'm happy to throw a bit more hardware at a server, if I get an improvement in reuse, understandability or maintainability. Maintenance accounts for much more than half the cost of most projects. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] calling an Python builtin function
Felipe Alvarez Harnecker wrote: Hi Zopistas, it's a pain looking to variables defined in a form such as checkboxes that can be a string if one is selected or a sequence if many are. to solve this problem i'd like to do something like: dtml-let checkbox="list(checkbox)" ... ... /dtml-let That is, calling the list function of Python on checkbox. But that doesn't work, neither dtml-let checkbox="_.list(checkbox)" Beside of this, is there a way to test if foo is a string or a sequence or whatever ?? Sounds like you might want this http://www.zope.org/Members/Zen/howto/FormVariableTypes Coerce your form fields into the types you require by using magic incantations of the form variablename:type. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] newbie question: case sensitive folder problem
Alexander N Gould wrote: How can I make a folder on my site case - insensitive in regards to access from URLs. If someone types http://mysite.com/bigfolder/ into their browser, I want it to take them to the Bigfolder, but right now, it produces a missing object error. Any hints? Sorry if this is a silly question - I'm just getting started here. I use zope with pcgi on Apache. You can solve this using a DTML method called bigfolder: dtml-call "RESPONSE.setBase(Bigfolder.absolute_url())" dtml-with Bigfolder dtml-var index_html /dtml-with However, this won't help you if you want things to be totally case-insensitive, like having "bIgFolDer" direct to "Bigfolder" for example. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] M$soft
Henny van der Linde wrote: Basically: if all you want to do is just serve some data from simple tables with not more then 5 concurrent users you can pull it of with Access etc. There are well known problems with data corruption caused by multiple concurrent access to Microsoft Access. Here's a reference that dropped from Google when I asked "corruption concurrent microsoft access database" http://dgl.com/dglinfo/1998/dg980825.html (half way down page) I wouldn't use Access with Zope. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Passing all POST variables?
Stuart 'Zen' Bishop wrote: I almost got around to doing this for GUF. It would involve interrogating REQUEST.form, and generating a load of hidden controls. One problem to be solved is that in some cases Zope will have messed with your form data before your code sees it (The name="myname:int" notation). It would be possible to handle some of these cases using an external method to interrogate the data type and generate the correct input type=hidden name="myname:int" code, but I can't see how to handle :record or :method etc. Here's a very silly idea: Could you pickle and Base64 encode the data you want to pass, and then shove it in a single hidden control? -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] PROPOSAL: Online chat with Jim and Paul
Paul Everitt wrote: I propose an IRC chat on Wednesday with Jim Fulton and me. Try and pick a time that's not *too* late at night for us Europeans. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Zope Email (syndication)
"Karl G. Ulbrich" wrote: Yup, this sounds like mail-in content to me, which is what I'm after :-) If the goal is mail-in content, I'm not sure I understand IMAP to be anything approaching what you want: IMAP doesn't ACCEPT messages, at least not any of the IMAP servers I've seen, it serves messages up to clients (one of which could be Zope, like WorldPilot does). IMAP servers don't accept messages for forwarding or delivery. However, they do accept messages to be placed in their folders. For example, I use Netscape and Cyrus IMAP. When I send out an email, Netscape places a copy of the email in a Cyrus IMAP "sent mail" folder. You could expose the ZODB object tree as IMAP folders and messages. Then you would be able to view objects, perhaps with each view of an object represented as part of a multi-part MIME message. You'd be able to upload new objects by writing them as emails. I reckon this is quite feasible, and possibly even useful :-) -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZClass book from Beehive.de
FR Chalaoux wrote: Hi, Before I insert 25DM in Beehive for the ZClass book, I would like to have your point of view on this book ! One of my colleagues has just finished working through the tutorial. I asked her a few questions about it. Here are her answers. 1: Is the tutorial you've been doing worth 10 quid? Definitely (though that's not saying it couldn't be improved) 2: What skill level is it aimed at? Ostensibly beginner, but to really understand it I needed to have a general understanding of Zope (from doing the Zope tutorial), Python (at absolute beginner level), a bit of DTML (from reading the DTML reference, and being talked to by a clever person) and HTML. It was probably also helpful that I had a vague background knowledge of OO principles, databases and stuff. So, aimed at ZClass beginners with relevant background knowledge. 3: What did you get out of it? I feel competent to set up a simple interactive application using ZClasses now. Security and linking to external databases were outside the scope of the tutorial. 4: Other general comments? It told a good story, presented coherent examples, built up a little self-contained system, and generally speaking, taught it well. However, there were a few iffy bits: some of the HTML in the examples was technically incorrect, and the DTML coding style was sometimes over-verbose and not properly explained. My biggest problem using the tutorial was caused by my not realising that ZClass meta-types are case-sensitive. This was not stressed in the tutorial - take care! Overall I'd rate it 8/10, losing points chiefly for poor coding style and a few inadequate explanations. As a whole, it's been very useful (and saved the CTO a lot of time talking me through things). We'll be sending our detailed comments on the explanations, and HTML and DTML problems, back to Beehive. You may also wish to look at the ZCatalog tutorial, the Job-Board how-to, and the Creating a catalog-aware ZClass how-to. http://www.zope.org/Documentation/How-To/ZCatalogTutorial http://www.zope.org/Members/mukhsein/job_board_howto http://www.zope.org/Members/AlexR/CatalogAware Also, see what you can find on the Zope Documentation Project pages: http://zdp.zope.org/ -- Steve Alexander Software Engineer Cat-Box limited ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: passing variables
josh on wrote: Is there a way to pass variables from one page to another using an a href but not including them in the url after a ?? sorry, I know this is an html question, but I figured it was pretty zope related. Josh, This is a "[EMAIL PROTECTED]" question, not a "[EMAIL PROTECTED]" question, so I've moved the thread to there. You can do what you want in a couple of ways: 1: Cookies Can your HTTP clients use Cookies? You can send a cookie on one page and retrieve it on the next. Look at the "Zope Developer's Guide" and for information on Cookies and the RESPONSE variable. Watch out though -- if you pass data in a cookie, and expect to use that data retrieved later, you could be opening yourself up to a security risk. A client could change the data in the cookie to mean something different, and you might never find out. 2: Sessions Use one of the NNNSession products, such as FSSession or SQLSession. These use cookies behind the scenes, but present you with a nice programming interface. Also, your actual data (session variable and so forth) live on the server. The cookie just tells the server where to find them. Thus, no part of your data is entrusted to the client. I'd suggest you look at the FSSession product: http://www.zope.org/Members/gaaros/FSSession Or perhaps HappySession: http://www.zope.org/Members/hungjunglu/Products/HappySession -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] OQL
Rogerio Atem de Carvalho [EMAIL PROTECTED] wrote: I have a question: Will ZODB have something like OQL? The problem in using ZODB is to do simple queries and link different class object instances in queries (SQL join). It is hard to do simple things in ZODB like aggregate functions (sum, max ...) That's why I use an external RDBMS... The XPath and XQuery support that ought to be coming along with the new XML support will handle this, although not with OQL as such. The functionality will be about equivalent, though. http://www.zope.org/Wikis/zope-xml/XPath%20in%20Zope -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Question (was on zope-ptk)
Hi Jonathan, I arbitrarily deem this to be a [EMAIL PROTECTED] rather than a [EMAIL PROTECTED] question, so I'll move it there :-) Jonathan Desp, who wants to upload a lot of files into Zope, wrote: someone said me to use load site, but there is a bug with this program. What is the bug in loadsite that is stopping you from using it? You have a couple of options here we haven't explored yet: 1: Fix the bug in loadsite yourself. 2: Describe the bug in sufficient detail that someone else feels moved to spend time fixing it. Anyone know another way to upload 900 files in one shot ? What kind of files are they? What do you want to do with them once they're in Zope? Is uploading these files a recurring need you have, or is it a one-off? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Question (was on zope-ptk)
Jonathan Desp wrote: Anyone know another way to upload 900 files in one shot ? What kind of files are they? What do you want to do with them once they're in Zope? they are all in .html, I want to publish it inside www.atomasoft.com, as a website. You should be able to simply FTP these files into Zope. Have you tried this? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Shutting down Zope
Jonathan, Jonathan Desp wrote: How I can shut down zope without clicking on the shutdown button ? because I'm not able to see the page. You can run the "stop" script that is in the directory you installed zope into. In your case it will be: /home/jonano/Zope-2.1.6-src/stop -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Unique id product
Hi Kent, Kent Sin wrote: I want to develope a unique sequence id generator product, I have the following code def newid(self, increment=1): """ return new id """ self.counter = self.counter+increment return self.counter I am not quite sure if this works when more than one process asking for a newid concurrently. Do you need unique sequential ids, or will just unique ids do? The problem with sequential ids is that you need to store the next id in the sequence somewhere, and access to and incrementing this value becomes a performance bottleneck for your server. Also, if you store the sequence value in the ZODB, you will be creating an undo record each time the id is incremented, and this is an additional performance and storage overhead. If you just want ids that are unique to a folder, try the following algorithm (taken originally from the Discussion object code in the PTK). The variable "self" is the one passed to the constructor method of a particular Python class, and represents the folder you want to put the new object into. I'm assuming the object is a "FooBar Item". The "foobar-%06d" bit generates a unique id for the object that looks like "foobar-290172837", based on the current time. id = int(DateTime().timeTime()) while hasattr(self, str(id)): id = id +1 id = 'foobar-%09d' % id The advantage of this approach is that there is very little contention in most cases. Is that zodb automatically serial all transaction? For the purposes of generating ids, yes. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Traversal of ZODB
On Fri, 30 Jun 2000, David Trudgett wrote: I wonder if anyone has a sample Python script that traverses the ZODB to query or perform arbitrary operations on the objects found in it? My present requirement is to write a script that goes through and does some automated updating of several dozen DTML documents. Hi David, I just posted something similar to Zope-Dev: http://lists.zope.org/pipermail/zope-dev/2000-July/005744.html -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Re: Traversal of ZODB
Hi David, David Trudgett wrote: Some questions I have in my mind: 1. I used "raw" and you used "PrincipiaSearchSource()" . The reason I used raw was because I wanted to be sure that what I got wasn't munged in any way, and that what I put back reflects what was actually there before. Sounds fair enough. I really shouldn't have used PrincipiaSearchSource(), as the method name doesn't reflect the function I wanted it to perform. The method read_raw() would have been more appropriate. However, my background developing Java applications programs causes me to favour calling methods to directly pulling in attributes. I *know* the Python idiom, but I'm not completely comfortable with it yet :-) 2. You used the "manage_edit()" method, whereas I just assigned to the "raw" property. My way seems to work OK, but I'm not sure how yours works: I assume it brings up an edit page in the browser for each document? My external method isn't returning anything, and isn't passing a REQUEST or a RESPONSE, so there is nothing returned to the browser at all. A better version of the external method would return a nicely formatted status message to the browser. The difference between setting "raw" directly and using manage_edit() is that the latter will parse and check the syntax of and save a cooked version of the DTML. As you just directly set the attribute "raw", you *might* find that your change aren't all reflected in the operation of the methods you've changed. However, as you've only changed some HTML formatting, this shouldn't be a problem with what you've done as yet. Using manage_edit() will also alert you to invalid syntax in your changed version by raising a ParseError, that will be visible in the browser. If there are additional triggers in a class to get it recatalogued in various special ways, these might only be triggered from methods like manage_edit(), whereas setting an attribute will only trigger standard catalogue awareness. 3. I don't like resorting to testing the "meta_type" for a particular string value. As you noted in your code, it doesn't allow for subclassing, so it's not fully general. I agree somewhat. However, I think that testing the meta_type is the most Zope-friendly way to do it :-) For example, in a pathological case, I could write a Python class in a Product that ostensibly inherits from DTML Method, but completely changes the way the attribute "raw" is used. 4. I was surprised that the import statement (not to mention "re.compile()") could be put outside of the method definition, considering that Zope's external methods grab on to individual methods within a Python module. Think about the way Python loads in functions and classes: the file gets read into the interpreter, and statements get executed (which runs them), whilst function definitions get executed (which causes their definitions to appear in the namespace somewhere). -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Is Zope slow?
Firestar wrote: Check out Jakob Nielsen's website and you would know that speed of serving webpages is one of the main usability factors. The bottleneck is not generally the speed of serving webpages, but rather, the speed of the client downloading the data from webpages, as the data has to go through N regions of the Internet between the server and client. Also, users tend to look at more than one webpage at a time, and so their incoming bandwidth per connection is reduced even further. The answer to this issue is to avoid large graphics and large pages, allow client-side caching, move the useful content of a site "forwards" towards its entrance, avoid banner adverts... -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] cr/lf causing spaces
You can put your linefeeds inside the HTML and DTML elements: h2This is a really long heading with a dtml-var foo dtml variable in it/h2 See http://www.cat-box.net/helen/notes.html#source_layout_notes for more information about these issues. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
re: [Zope] Another DateTime Strangeness
Nils Jeppe wrote: Zope just stored a DateTime I entered as 13:14 in a slightly odd way: 2000/07/09 13:13:60 GMT+1 Known bug? Yes. What version of Zope are you running? Shane Hathaway did a line-by-line audit on DateTime.py, and fixed loads of timezone and rounding bugs. The fixed version is available in CVS and in Zope 2.2.x. There was also a copy of it on Shane's page at www.zope.org, but it is gone now. If you get stuck, mail me privately and I'll send you the fixed version. You're better off getting it from a copy of Zope 2.2, if you can. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZWiki/Structured Text formatting surprise
Jim wrote: A number of people have complained about the use of single quotes for in-line code. One possible alternative is to use ``code''. I like the way it looks. However, I think it causes a problem with code like this: `` if a == '': doSomething() '' You could use ``code`` instead, though. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: LoadSite can create a corrupted data.fs ?
Jonathan, I'd be really really surprised if LoadSite can create a corrupted data.fs. I really do not think this is where the problem lies. LoadSite does not directly interact with the Zope persistence machinery. It really doesn't do that much different than manually uploading loads of files. Even if something were faulty in the tool you used to upload the files, Zope itself would reject the file, or store incorrect data; but either way, the data.fs would remain intact and self-consistent. However, when you upload 900 files in one go, no matter how, you are using a lot of the resources on your computer. You're probably exercising quite a lot of the cache and memory. Have you checked carefully whether you have that Intel mainboard hardware fault that was mentioned to you a few days ago? If your hardware has this fault then just occasionally, you will be writing faulty data. You must get your hardware checked, or else this problem will most likely occur again. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
re: [Zope] .dtml files
Daniel wrote:
During this process I have noticed that Zope's dtml pages are stored on
the file system as .dtml files (i.e. roleEdit.dtml) The question then is
how does Zope display this pages??
The pages are usually accessed as attributes Python objects. They are
wrapped in a HTMLFile instance.
(Line numbers refer to latest Zope 2.2b4).
For example, see line 191 of lib/python/OFS/DTMLMethod.py:
manage_editForm=HTMLFile('documentEdit', globals())
See the source in lib/python/DocumentTemplate/DT_HTML.py for details.
The documents are read lazily.
class HTMLFile(FileMixin, HTML):
"""\
HTML Document templates read from files.
If the object is pickled, the file name, rather
than the file contents is pickled. When the object is
unpickled, then the file will be re-read to obtain the string.
Note that the file will not be read until the document
template is used the first time.
"""
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
___
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[Zope] Re: [Zope-dev] passing namespace
danchik wrote: if I submit a form to some page that has frames, how do I pass the REQUEST namespace to those frames Danchik, You've posted this question to the [EMAIL PROTECTED] list. This mailing list is about the technical internals of Zope, and developing new Zope products. Your question is more to do with using Zope as a web developer. You're more likely to get a useful response to your question if you post it to the [EMAIL PROTECTED] mailing list. I've cc-ed this message to that list instead of the zope-dev list. Also, I'd find it helpful to know what you have already tried, and what didn't work when you tried it. A simple example that demonstrates the problem would help too. Have you looked in the mailing list archives? Perhaps your question has already been answered there? Here's a link to a searchable archive. http://zope.nipltd.com/public/lists/zope-archive.nsf/ I searched just now for "request and frames", and there were a number of helpful-looking results. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: LoadSite can create a corrupted data.fs ?
Jonathan Desp wrote: Thanks alot ! Do you know how to put a small description for each results you are getting on a search engine, if you go to www.atomasoft.com and search "Nanotechnology" you'll get several several result, but with no description like at my past site www.atoma.f2s.com if you try the search engine you'll see good description which is a must. So do you know a way or the script or ? you'll be very useful if you know how. Read the ZCatalog Tutorial and the Advanced ZCatalog Tutorial. You can find them by searching on www.zope.org. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] re: Meta Type Registry
Andrew Kenneth Milton wrote: Is there a Product Builders meta-type registry somewhere? I can see things getting messed up in the near future as the number of products proliferates and meta-types start to clash. I just tried adding a new ZClass in a new Product in my Zope 2.2 final installation. The multiple-selection widgit for choosing the base-classes has all the available meta-types prefixed with the name of their product, followed by a colon. For example, here's the list I get: AccessControl: User AccessControl: UserFolder OFS: DTMLDocument OFS: DTMLMethod OFS: Folder OFS: File OFS: Image ZCatalog: CatalogAware ZCatalog: ZCatalog ZPatterns: DataSkin ZPatterns: PlugInBase ZPatterns: PlugInContainer ZPatterns: Rack ZPatterns: Specialist ZClasses: ObjectManager So, it looks to me like the problem of meta-types clashing is taken care of, at least in principle. I note that the management screens' "add" drop-down list doesn't have the "product:" namespace qualification, and I guess that's where the problems lie. I doubt this would be much of a problem to patch, and it probably counts as a bug, if anyone is passing the Collector in the near future. Now, we might want to consider a product naming registry to address the problem of product names that clash... -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Meta Type Registry
Steve Alexander wrote: Andrew Kenneth Milton wrote: Is there a Product Builders meta-type registry somewhere? I can see things getting messed up in the near future as the number of products proliferates and meta-types start to clash. I note that the management screens' "add" drop-down list doesn't have the "product:" namespace qualification, and I guess that's where the problems lie. I doubt this would be much of a problem to patch, and it probably counts as a bug, if anyone is passing the Collector in the near future. Patch against 2.2 final. It isn't perfect, but it is minimal and functional :-) This changes the "add" drop-down on the management screen to give you the product name (usually) followed by a colon, followed by the meta-type. *** lib/python/OFS/main.dtmlSat Jul 22 23:50:17 2000 --- lib/python/OFS/new_main.dtmlSat Jul 22 23:50:13 2000 *** *** 96,102 /'+this.options[this.selectedIndex].value" OPTION value="manage_workspace" DISABLEDAvailable Objects dtml-in filtered_meta_types mapping sort=name ! OPTION value="dtml-var action fmt="url-quote""dtml-var name /dtml-in /SELECT INPUT TYPE="SUBMIT" VALUE=" Add " --- 96,103 /'+this.options[this.selectedIndex].value" OPTION value="manage_workspace" DISABLEDAvailable Objects dtml-in filtered_meta_types mapping sort=name ! OPTION value="dtml-var action fmt="url-quote"" !dtml-var product missing:dtml-var name /dtml-in /SELECT INPUT TYPE="SUBMIT" VALUE=" Add " -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] re: Meta Type Registry
Andrew Kenneth Milton wrote: +[ Steve Alexander ]- | Andrew Kenneth Milton wrote: | | Is there a Product Builders meta-type registry somewhere? | | I can see things getting messed up in the near future as the number of | products proliferates and meta-types start to clash. | | I just tried adding a new ZClass in a new Product in my Zope 2.2 final | installation. | | The multiple-selection widgit for choosing the base-classes has all the | available meta-types prefixed with the name of their product, followed | by a colon. I'm not sure that Zope will actually let you successfully register two classes or baseclasses with the same meta-type... The meta-type is further qualified by the name of the Product. This works without a problem if you're writing Python products, but there are some difficulties if you want to have two ZClasses with the same name. We can do a short experiment using ZClasses to check this. I'm using 2.2 final. First of all, install the patch I posted to the Zope list last night. That is, with lib/python/OFS/main.dtml at line 98 change this: dtml-in filtered_meta_types mapping sort=name OPTION value="dtml-var action fmt="url-quote""dtml-var name /dtml-in to this: dtml-in filtered_meta_types mapping sort=name OPTION value="dtml-var action fmt="url-quote"" dtml-var product missing:dtml-var name /dtml-in Next, create a new Product from the management interface. Let's call it "TheClash". You can add a ZClass called DTMLDocument, meta-type "DTML Document" with no problem. In the Product "TheClash", create a new ZClass called "Casbah". Keep the box "create constructor objects?" checked, but don't worry about adding any base-classes. Now, create another new Procduct called "Morocco". Within it, create a new ZClass "Casbah". If you leave the box "create constructor objects?" checked, you'll find that creating the class fails with an error: "The permission Add Casbahs is already defined." However, you can create a ZClass "Casbah" in product "Morocco" if you uncheck the box "create constructor objects?". This isn't too much of a problem because it is easy to create our own custom permissions for ZObject constructors. I won't bother doing that now. We can borrow the other Casbah's permissions if we need to. The new "Morocco: Casbah" won't show up in the "add" list yet, because there is no Factory for it. Let's create a Factory in the Product "Morocco", with id "Casbah_factory", title "Casbah factory". For now, it doesn't matter what "Initial method" is set to. Leaving it as "Help" will be ok for the purposes of this exercise. The problem comes with what we put in the "add list name" field. If we put in "Casbah", we get an error "The type Casbah is already defined". We can put in "Casbah2" though, and that works. Of course, is isn't practical if you simply want to use someone else's Product on your Zope installation, and you already have a ZClass meta-type defined that clashes with one in the new Product. I just peeked at the source for this system (lib/python/App/ProductRegistry.py, line 130 or thereabouts). The Product Registry seems to add new meta-types based on the meta-type alone, whereas they should be organised by a (product, meta-type) tuple. This would fit with the way product constructors are called, for example: "manage_addProduct/Morocco/Casbah_factory". I won't produce a patch for this just now, as I'm not sure what other parts of Zope are dependent on the current behaviour of not allowing meta-type clashes in ZClasses. I do not think it would be hard to improve the current behaviour. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] ZClasses to RDBMS
Satheesh Babu wrote: Is there any recommended way to get data from ZClass instances to a corresponding RDBMS (Oracle 8i specifically) table? What I could think of as options are: (I've'nt tried out any!) 1. In manage_add for my Zclass call the corresponding ZSQL insert method - Can this be done? - What can be done for updates? 2. Create masking DTML methods to create Zclass instances dynamically. Call ZSQL methods alongside as well. 3. Do periodic downloads of ZClass instances - say XML format - and batch upload to database. This sounds like a job for ZPatterns: http://www.zope.org/Members/pje/ZPatterns Most people find ZPatterns a bit difficult to get started with. It is also alpha-release software, so *caveat emptor*. Read the ZPatterns wiki too. http://www.zope.org/Members/pje/Wikis/ZPatterns/HomePage -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Where should votes be posted? (was: Your feedback on datetime)
Brian Lloyd wrote: Do we *have* to clutter this [EMAIL PROTECTED] list up with loads of votes? It is high enough traffic as it is! That is a good point. My initial reaction is to say that maybe voting should only be done on zope-dev, but I worry a bit that there may be quite a few people on the zope list (and not on zope-dev) who would have a stake in an issue and end up not seeing (or voting) on it. I agree there. Ideally I'll have a web-based voting thing on dev.zope.org so that only one pointer to it has to go to the list(s), but until then I propose that votes happen on zope-dev for the time being... Sorry that I wasn't very clear. My point is whether everyone has to mail their votes to the list, or whether they can just mail them to you. You collate the votes and post the result to the list after a period of time. But then, perhaps people like seeing how popular the proposal is, in real time :-) -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: [Zope-dev] Need for aq_base in DTML(was: Re: [Zope] Dumb DTMLquestion - existance check of an object)(was: Re: [Zope] Dumb DTMLquestion - existance check of an object)question - existance check of an object)(was: Re: [Zope] Dumb DTML question - existance check of an object)
Dieter Maurer wrote:
* Access to "/": "PARENTS[-1]"
* Existence check: "_.hasattr(object,what)"
NOTE, that this is the sloppy part.
- "_.hasattr" will return true, if "object" has
attribute "what" (that is what we want)
*OR* when it has acquired such an attribute
(we do *NOT* want that here).
What we would need is a DTML accessible version
of "aq_base". This is trivially handled by
an external method.
Can you do this with the following in DTML?
dtml-with "PARENTS[-1]" only
dtml-if "_.hasattr(object, what)"
...stuff...
/dtml-if
/dtml-with
Not tested, but it looks right to me.
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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[Zope] Re: Displaying Lines? was: form to a email in a correct
Tim Cook wrote: Other than iterating through the property is there a way to display or present the lines property for edit without the containing ['brackets', '', 'ticks']? s Something like this: dtml-var "_.string.join(lines_property, 'br')" or this: dtml-var "_.string.join(lines_property, '\n')" -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Pasting renderable
I don't think it is just Renderable ZClasses. Can you paste ZClass instances at all in Zope 2.2.0? See my message in Zope-Dev: http://lists.zope.org/pipermail/zope-dev/2000-July/006238.html -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
re: [Zope] Client.py
bak wrote: has anybody successfully used Client.py that ships with Zope-2.2.0? i can't seem to run it. even on the command line. i've searched the mailing list, but to no avail There's a bug in Client.py. Change line 212 of lib/python/ZPublisher/Client.py from this: h.connect((self.host, self.port)) to this: h.connect(self.host, self.port) I believe this is already fixed in Zope CVS. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: [Zope-dev] RE: Request for Comment: Zope API naming convention
Chris McDonough wrote: Please make comments by Wednesday April 16. Jim Plenty of time... :-) Especially considering that the next Wednesday April 16 is in 2003. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] List
William Joye wrote: Hello, I'm a newbie in zope. I think is a simple problem but I can find a solution. I would like to show 2 lists (ex: list1 and list2) like this : list1 = 1, 2, 3,... list2 = A, B, C,... list1 + list2 = 1 A 2 B 3 C How can I iterate 2 lits in one dtml-in ? Kapil wrote: for me the easiest way seems to combine the two lists and iterate over the results in a dtml in. problem is that doing this in dtml is hard cause of safety restrictions, in python its pretty slack though. here is a web python method that does the list work. name: combine args l1, l2 return map( (lambda x,y:(x,y)), l1, l2) and the dtml dtml-in "combine(list1, list2)" dtml-var sequence-key - dtml-var sequence-item /dtml-in You can also do this: dtml-in list1 dtml-var sequence-item - dtml-var "list2[_['sequence-number']-1]" br /dtml-in -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] ZClass inheriting from image question
Kapil wrote: I want to change the default way the ZClass renders it's information. I want more than simply a picture so I crated a new method "index_html" in my ZClass. My question is: How do I display the picture from this index_html method? http://www.zope.org/Members/lalo/Renderable-ZClass -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] The date in Dutch
Michel Houben wrote:
How can I fix the date in Dutch, for example Donderdag 17 Augustus 2000
instead of Thursday 17 August 2000. I hope someone can solve this problem.
I don't know any Dutch.
However, here's an external method that will convert the months and days
of the week in a string from English to German.
There are probably better names for the variables and such, so don't
take this as as example of clear maintainable programming :)
It ought be be pretty efficient.
Assuming you call the external method D_date, use something like this:
dtml-var "D_date('October February July, Tuesday, 23 March 2000')"
import re
# you can remove lines where the words are the same in both languages
replacements={
'Monday':'Montag',
'Tuesday':'Dienstag',
'Wednesday':'Mittwoch',
'Thursday':'Donnerstag',
'Friday':'Freitag',
'Saturday':'Samstag',
'Sunday':'Sonntag',
'January':'Januar',
'February':'Februar',
'March':'Mauml;rz',
'April':'April',
'May':'Mai',
'June':'Juni',
'July':'Juli',
'August':'Augustus',
'September':'September',
'October':'Oktober',
'November':'November',
'December':'Dezember'
}
class re_stored:
def __init__(self, e, d):
self.d = d
self.regex=re.compile(e)
def r(self, s):
return self.regex.sub(self.d, s)
replace_regexes=[]
for e,d in replacements.items():
replace_regexes.append(re_stored(e,d))
def D_date(datestring):
return reduce(lambda x,y: y.r(x), replace_regexes, datestring)
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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[Zope] The date in Dutch
Sent again -- here's a slightly more compact version, that avoids
declaring a separate class to hold the expressions in.
Michel Houben wrote:
How can I fix the date in Dutch, for example Donderdag 17 Augustus 2000
instead of Thursday 17 August 2000. I hope someone can solve this problem.
I don't know any Dutch.
However, here's an external method that will convert the months and days
of the week in a string from English to German.
There are probably better names for the variables and such, so don't
take this as as example of clear maintainable programming :)
It ought be be pretty efficient.
Assuming you call the external method D_date, use something like this:
dtml-var "D_date('October February July, Tuesday, 23 March 2000')"
import re
# you can remove lines where the words are the same in both languages
replacements={
'Monday':'Montag',
'Tuesday':'Dienstag',
'Wednesday':'Mittwoch',
'Thursday':'Donnerstag',
'Friday':'Freitag',
'Saturday':'Samstag',
'Sunday':'Sonntag',
'January':'Januar',
'February':'Februar',
'March':'Mauml;rz',
'April':'April',
'May':'Mai',
'June':'Juni',
'July':'Juli',
'August':'Augustus',
'September':'September',
'October':'Oktober',
'November':'November',
'December':'Dezember'
}
replace_regexes=[]
for e,d in replacements.items():
replace_regexes.append(
eval("lambda x: re.compile('%s').sub('%s', x)" % (e, d)))
def D_date(datestring):
return reduce(lambda x,y: y(x), replace_regexes, datestring)
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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[Zope] The date in Dutch - last time!
Ok... this is the last time. You can put a line: del replacements just after the for loop, and save a tiny amount of memory. This might be a useful optimisation if you're dealing with a very large list of words to replace. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] The date in Dutch - really last time!
Ok... this is *really* the last time.
I don't know why I was using a regular expression, when string.replace
would have done just as well. Here's my final version of the external
method. I *promise* I won't change it again.
Of course, the simplest version would be
from string import replace
def D_date(datestring):
datestring=replace(datestring, 'Monday', 'Montag')
datestring=replace(datestring, 'Tuesday', 'Dienstag')
# und so weiter
However, this would be slower to execute than using "reduce", as below.
from string import replace
# you can remove lines where the words are the same in both languages
replacements={
'Monday':'Montag',
'Tuesday':'Dienstag',
'Wednesday':'Mittwoch',
'Thursday':'Donnerstag',
'Friday':'Freitag',
'Saturday':'Samstag',
'Sunday':'Sonntag',
'January':'Januar',
'February':'Februar',
'March':'Mauml;rz',
'April':'April',
'May':'Mai',
'June':'Juni',
'July':'Juli',
'August':'Augustus',
'September':'September',
'October':'Oktober',
'November':'November',
'December':'Dezember'
}
replace_fns=[]
for e,d in replacements.items():
replace_fns.append(
eval("lambda x: replace(x, '%s', '%s')" % (e, d)))
del replacements
def D_date(datestring):
return reduce(lambda x,y: y(x), replace_fns, datestring)
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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Re: [Zope] The date in Dutch
Michel Houben wrote: I am just beginning with Zope, so this is maybe a very stupid question; How do I make a external method, I don't know what I must fill in, in two fields "Python module file" and "Function Name", I hope you can solve this problem for me. I thank you for your help, First, make sure you have a subdirectory "Extensions" in your Zope installation. Here's the directory listing for mine. Make sure that "Extensions" is there. Extensions access libutilities wo_pcgi.py zpasswd.py LICENSE.txt doc pcgi var wo_pcgi.pyc zpasswd.pyc README.txt import start w_pcgi.py z2.py ZServer inststop w_pcgi.pyc z2.pyc Using a text editor, create a new file inside "Extensions" called "D_date.py". Put the code of the external method into D_date.py. Save it. If you're on a unix system, make sure that you add the folder and add the file as the appropriate user. This is often "nobody" or "zope". From your Zope management web pages, add an external method to the root of your zope instance. Let's call it "D_date". (You can call it anything you want, so long as it is a valid zope id.) Fill in "D_date" (without the quotes) as both the python module name, and the function name. See also here: http://www.zope.org/Documentation/How-To/ExternalMethods -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Anyone tried Tomahawk
Anyone tried Tomahawk yet? http://freshmeat.net/projects/tomahawk/ Tomahawk is an Apache-based Web server with integrated Squid object cache capabilities running on an intuitive Web-based UI. As well as dramatically increasing server performance, Tomahawk simplifies the operation of maintaining an object-cache accelerated Web server. There's also http://anemone.electricc.com/ for real-time reporting. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Stupid SiteAccess Question
Terry Babbey wrote: OK. I just downloaded SiteAccess 2.0.0b3 and untarred it in my Zope directory. I shutdown and restarted Zope but when I go to Control Panel/Manage Products I do not see SiteAccess listed. AM I missing something here ( quite probable )? The latest SiteAccess is packaged a little differently from most other products. Most products are created with the idea that you will untar them in your Zope directory, adn they will put themselves in lib/python/Products/ProductName. SiteAccess just puts itself in the directory SiteAccess. Therefore, you need to untar the siteaccess archive in your lib/python/Products directory. Seeing as you've already done this, you can simply move the SiteAccess folder from one level below your Zope installation folder, and put it in your Products folder. The reason SiteAccess is this way is that it provudes better compatibility with using INSTANCE_HOME to share a single bunch of code between many Zope instances. From the CHANGES.txt file: * The tarball no longer includes 'lib/python/Products' in file paths. It must be unpacked in the Products directory, for better compatibility with INSTANCE_HOME installations. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Can't compare apples to apples. (document_id != id_of_my_document)
T.J. Mannos wrote:
I have a DTML document called "apples".
A call to dtml-var document_id gives the string "apples"
However, a dtml-if "document_id == 'apples'" returns false. Am I missing
something? I've tried _.str(document_id) and even
_.string.strip(_.str(document_id)).
The tag dtml-var document_id gets a value for document_id, and looks
to see if it is callable. If so, it calls it and returns the result of
calling it. If not, it just returns it. This is a feature of dtml-var
name="whatever", which is another way of writing dtml-var whatever.
However, when you use an expression, such as you are doing in the
dtml-if tag, you are writing in Python, and you need to call an object
if it ought to be called.
An expression is something like dtml-var "expression" or dtml-var
expr="expression, which are equivalent. The same goes for dtml-if
"expression".
In your case, you might find that this works:
dtml-if "document_id() == 'apples'"
Or perhaps this:
dtml-if "document_id(_.None, _) == 'apples'"
The reason is that ids ought always to be simple string objects, but
some aren't. There are lots of legacy programs that rely on some ids
being methods, so the odd cases won't be changed for a while yet.
The general answer is to use a special function that calls the value if
it is callable.
You have a choice here. These are equivalent.
dtml-if "_['document_id'] == 'apples'"
dtml-if "_.getitem('document_id', 1) == 'apples'"
--
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[Zope] Re: ZCatalog - OR'ing on different columns (indices)
Aleksander Salwa wrote: Is there any better method of OR'ing on differend indices in quering ZCatalog, then the method described in 'Advanced ZCatalog Searching' deletia It seems to me to be common case, when we show to user simple search form with only one input (that is where 'userInput' came from) and 'Go!' button. User don't want to know, that we have our data splited in many properties. But on Zope side it's very good to have it structured in that way - so how to reconcile these things ? I use more than one ZCatalog at a time. One called SiteSearch stores full-text-search information on all the objects in a site. Then, I have other ZCatalogs for domain-specific searches. I use ZPatterns to do this. My objects are derived from DataSkins. I use CatalogTriggers to index my objects in the appropriate catalogs. CatalogTrigger is from Itamar Shtull-Trauring's ZPAddons package. (There will be a new version of this, renamed DataSkin addons released this weekend.) You could also modify CatalogAwareness.py to make an object aware of several catalogs at once. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] how to keep stuff out of undo
Roman Milner wrote: Hi. We have a product (an mp3 jukebox) that uses the ZODB to store a large data structure of all the albums and track names. Many people are allowed to add/remove albums from the database. The problem is, when they do this the entire data structure is backed up for undo. So, by the end of each day, our ZODB has grown so large we are out of disk space. The way I'm reading this, you have this entire database of albums and tracks as a sinle object in your ZODB. Don't do that. Refactor your product to use subobjects of your Jukebox object as albums, and subobjects of those as tracks. Then, only a small amount of data gets rewritten on each transaction. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Slow zope.org?
ethan mindlace fremen wrote: Short term, we will soon have a mirror of zope.org, which should reduce the possibility of slowdown. What kind of mirroring? Something static, or something clever using ZEO? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Could someone explain this DateTime behaviour to me?
Dario Lopez-KXsten wrote:
AS in is this the expected/intended behaviour or could this be classified as
a bug?
---
bobobase_modification_time
2000/09/02 08:49:48.326 GMT+2
bobobase_modification_time().toZone('GMT+2')
2000/09/02 12:49:48.326 GMT+2
bobobase_modification_time fmt="%Y-%m-%d %H:%M"
2000-09-02 12:49
---
What version of Zope are you using?
Various timezone bugs in DateTime.py were fixed in the latest version of
Zope.
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Re: [Zope] 'showREQUEST' or 'show_REQUEST' ?
Chris Withers wrote: Jason Cunliffe wrote: PS. Be warned: 8-() if you try put the code above in a DTML methods named 'showREQUEST' or 'show_REQUEST' it will not work = 'Id already in use' That's a little weird... Can anyone shed any light on this? I get an error when I try to add a DTML Method with REQUEST anywhere in the id. Actually, the method gets added, but I cannot edit it. I haven't found out why yet. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] restrictedTraverse - yay! :-)
Dennis Nichols wrote:
At 9/15/00 10:05 AM, Chris Withers wrote:
So:
dtml-var "restrictedTraverse('slash/delimited/path')" absolute_url
will work as I expect it to?
Well, I don't know what you expect :-) When I try to save such a construct
with the handy-dandy Change button I get
Document Template Parse Error
Invalid attribute name, "absolute_url", for tag dtml-var
"restrictedTraverse(choice)" absolute_url ...
Yeah. That's right. There is no attrubute absolute_url.
There is, however, a method absolute_url().
This should do what you expect:
dtml-var "restrictedTraverse('slash/delimited/path').absolute_url()"
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Re: [Zope] Restricting URL access to objects that are not complete web pages
Stephen Simmons wrote: Any suggestions? Something involving permissions/roles? Hacking before_bobo_traverse()? Something simpler? You could use SiteAccess for this; get it to match the allowed paths and patterns to those documents you want available directly through the web, and return a 404 to those that don't match. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Restricting URL access to objects that are not complete web pages
Stephen Simmons wrote: Steve, Ideally the publishability of an object would be an internal property of that object, not something that is set externally via rules in SiteAccess. It's been a little while since I last looked at SiteAccess, but wouldn't using SiteAccess force you to store publishable objects in one part of the database hierarchy and non-publishables in another? If you wanted publishables and non-publishables all mixed up in the same folders, SiteAccess's rules might get a bit complicated. Yes, this is not a neat solution, unless you have already designed your site to use siteaccess in this way. Another approach could be to: - create a folder that does a RESPONSE.setStatus(404) as the URL traversal machinery passes it. This sets up the default condition of 'NotFound' error for the URL - at the end of the URL, if the final object is publishable or the final item is a publishable method called on a publishable object, do a RESPONSE.setStatus(200) to say 'OK'. Even if you don't reset the status to 200 and it remains as 404, the page will still get sent to the browser. You don't want to mess with the traversal machinery on this, as you want traversal to continue to work as it does now. I think your intent is to block direct requests from a web-browser for particular objects. The easiest way of doing this is to check REQUEST.steps[-1] to see if it equals the current object's id. If you want this to be fairly transparent, perhaps based on a particular permission or property, then I think you'll need to patch part of Zope, probably HTTPRequest.py. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] standard_error_message confusion
Danny William Adair wrote:
My standard error_message is ok.
I think my problem with LoginManager and Membership can be cut down to this:
If I take away all permissions from a dtml-document for Anonymous, he will
be correctly prompted for Login using *my* standard_error_message
("LoginRequired" is raised) as soon as he tries to access it. _But_, if I
take away the rights for Anonymous from a _folder_ under which a dtml
document acquires these security settings, he'll get the hard-coded Zope
error_message with the login field, instead of my (customized one). Whassup?
In the latter case, does Anonymous have rights to view your
standard_error_message?
--
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Re: [Zope] standard_error_message confusion
Danny William Adair wrote: Unfortunately, yes he does. Time to step through your site in the debugger then. Or, instrument HTTPRequest.py and HTTPResponse.py to see what is getting called when. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problem with properties in inherited ZClasses
Stephen Simmons wrote: I have tried to create another ZClass, AdminTools:Task that inherits from AdminTools:Folder that adds some task tracking functionality and uses/overrides the AdminTools:Folder methods for displaying objects I tend to try not to have ZClasses derive from other ZClasses. You'd find it more straightforward either to derive both ZClasses from a common Python base class, or to keep both ZClasses independent of each other. In general, I try to avoid using inheritence. Python and Zope support polymorphism whether you derive classes from the same base-class or not. Also, I find the coupling introduced by inheritence more trouble than it is worth for the reduced redundancy. I realize that I have avoided trying to answer why ZClasses work in this way. File D:\Dev\ZopeTestbed\lib\python\OFS\PropertySheets.py, line 235, in _setProperty (Object: Task) Bad Request: (see above) I don't understand why I can add the 'title' property to Task but not 'description'. Here's the code that is raising the exception: if hasattr(aq_base(self),id): if not (id=='title' and not self.__dict__.has_key(id)): raise 'Bad Request', ( 'Invalid property id, em%s/em. It is in use.' % id) You can see that 'title' has a special status as a property. To conclude: (i) What is going on and how can I fix it? Don't do things that way to start with. (ii) When using a ZClass as a base class, do instances inherit any properties, or do they just get access to the base class's methods? If ZClasses do inherit properties from parent ZClasses, how do I reach them via the property sheets? If you add propertysheets to instances of your classes, rather than to the classes, then you don't get conflicts over attributes. However, unless you use ZPatterns or something like that, you have to refer to the attributes of propertysheets explicitly naming the propertysheet. (iii) Is there a simple way to find out what methods and properties an object has? I would like to see what it defines, what it inherits and what it acquires. Yes. See the code above from PropertySheets.py. Use something like this in an external method to find out the attributes of an object. (In python, methods and fields are both attributes.) You can use the magic aq_* attributes of acquisition wrappers to walk through the objects that get considered during acquisition. You might also want to look at Shane Hathaway's Acquisition Explainer, an external method to show how acquisition works, that also demonstrates use of the aq_* attributes. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Help - Weird stuff.
Phil Harris wrote: Hi all, Sorry for the subject but I don't really know how to describe this. I have a folder 'hp' which has loads of stuff in it, if I try to copy and paste into it though I get this error: 'The object index_html does not support this operation ' I can't reproduce this in Zope 2.2.2, linux. Can you describe a simple case that has the problem? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope-dev] Methods through the Web (security?)
Martijn Faassen wrote: Brian Lloyd wrote: Yes you could, except that you would also make them inaccessible from DTML (or from anywhere else) for the same class of users. Is it really acceptable that in order to use dtml-in objectIds on a page that needs to be accessible to anonymous users that I must grant 'Access contents information' to anonymous users and thus give them the ability to inspect my objects if they want to? So you have something like: 'Access at all' (this is 'Access Contents Information') 'Access through URL' (the 'expose' flag I talked about in previous posts) 'Access through FTP' 'Access through XML-RPC' etc. This is an interesting idea -- The Zope server is an Object database that exposes objects and attributes via various protocol modules. I can see a future where you'd want to be able to plug in arbitrary protocol modules -- and perhaps more than one instance of each type of protocol (for example, http on ports 80 and 8080). It would make sense to me for each protocol to have its own set of "expose flags" or even "expose rules" for each addressable object/attribute. The user interface to manage the objects could collect these all into one place, so as the manager of an object, you can decide what is allowed to be seen via which protocols. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Zope 2.1.6 DateTime bug: daylight saving time not handled -- with patch
Dieter Maurer wrote: The Zope 2.1.6 DateTime module does not recognize daylight saving time. You might find Shane Hathaway's revision of DateTime.py useful. http://www.zope.org/Members/hathawsh/DateTime.py It corrects many rounding errors, as well as the problems with daylight saving time. I believe it is the version that will be in Zope 2.2 -- Steve Alexander Software Engineer Cat-Box limited ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Repeating a piece of HTML code
Shane Hathaway wrote: Alex Mendez wrote: Hello, it's the first time I write here and I'm a newbie at Zope, so maybe I'm asking a stupid question... Case is I retrieve from my movie database the value of the movie from 1 to 5 stars. I would like to repeat that n times the code img SRC="star.gif" height=15 width=15 so the number of stars would appear: 1 - * 2 - ** 3 - *** 4 - 5 - * Is there any way to do so in Zope? Does the dtml-in tag anything to do with it? dtml-in expr="_.range(0, movie_rating)" img SRC="star.gif" height=15 width=15 /dtml-in Replace movie_rating with the variable that represents the movie rating. What about dtml-var "'*' * movie_rating" ? -- Steve Alexander Software Engineer Cat-Box limited ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Repeating a piece of HTML code
Steve Alexander wrote: Shane Hathaway wrote: dtml-in expr="_.range(0, movie_rating)" img SRC="star.gif" height=15 width=15 /dtml-in Replace movie_rating with the variable that represents the movie rating. What about dtml-var "'*' * movie_rating" ? Or rather: dtml-var "'img SRC=star.gif height=15 width=15' * movie_rating" -- Steve Alexander Software Engineer Cat-Box limited ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Using string idiom in dtml
Another slightly different idiom is: dtml-var """'img src="foo.gif"' * 12""" It isn't very SGML-like though. Jim Sanford wrote: You've got my vote. Being able to use """ would solve alot of my dtml coding headaches. Jim Sanford - Original Message - From: "Steve Alexander" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, June 02, 2000 8:06 AM Subject: [Zope-dev] Using """string""" idiom in dtml How easy would it be to allow """python strings""" inside DTML tag attributes? I'm thinking particularly of situations like: dtml-var "'''img src="foo.gif"''' * 12" Currently, you need to mess about with _.chr(34) and string concatenation. The triple-quote idiom looks clearer to my eyes. -- Steve Alexander Software Engineer Cat-Box limited ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Prototyped folders?
Hi Hamish, I've answered your message in Zope-Dev, as this seems to be more of a developers' question. Hamish wrote: If a folder doesn't itself contain a required object or method, I'd like to have another folder looked in instead. The fall-back folder won't necessarily (and often can't) be higher in the hierarchy, so acquisition doesn't seem to be a solution. This looks like a job for a Python class that uses the new Traversal interface. http://www.zope.org/Members/michel/Projects/Interfaces/Traversal Your requirements sound very much like those for Shane Hathaway's Transparent Folders product, except that instead of briefly diverting acquisition into the transparent folder, you want to briefly divert acquisition into some other arbitrary folder. Last I heard, Shane was going to revitalize Transparent Folders when the various interfaces it uses are finalized for Zope 2.2. I suggest that after Shane has re-released his product, you make a product based on Transparent Folders that works in this slightly different way. Or, if it is appropriate, consider your changes an enhancement to Transparent Folders, and offer it as a patch. If you don't have sufficient python-hacking-zope-hacking-Zen to do it yourself, I think I might have a go (and hopefully learn some Zope internals Zen in the process). Transparent Folders were here: http://www.zope.org/Members/hathawsh/ - but the link to them is broken -- I guess because the product was withdrawn as there was a problem with it under Zope 2.1.6. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Racks and Specialists Simplified
Shane Hathaway wrote: "Phillip J. Eby" wrote: At 02:33 PM 6/11/00 -0600, Shane Hathaway wrote: I believe I have come to understand the basics of ZPatterns and would like to be sure I understand correctly, as well as help others understand also. Bravo! An exquisite introduction to the purpose of ZPatterns. May I post an edited version of your message to the ZPatterns Wiki, and make it or subsequently edited versions a part of the ZPatterns documentation? (With attribution, of course.) By all means! Thank you. The truth is that several of us at DC have had trouble making sense of it all, so I wrote it not only for the community, but DC and myself as well. :-) I just looked over the ZPatterns Wiki for Shane's explanation, but I can't find it. If it isn't there (hiding somewhere), perhaps I can add it from Shane's original email? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] ZTopic displays wrong tabs
Hi folks,
I'm using ZTopic.
One thing I've noticed about the management interface is that, although
an appropriate tab is highlighted when you click that tab, if you go to
a subsequent screen, often "contents" will erroneously become the
highlighted tab.
This is causing problems as I explain to non-technical folk how to use
ZTopics. I say "select the contents tab", and they say "but the contents
tab **is** selected!".
I have a fix for this, but the real problem is in the logic of
lib/python/App/manage_tabs.dtml:
dtml-call "REQUEST.set('a_', 0)"
dtml-in manage_options mapping
dtml-if expr="URL[-(_.len(action)):]==action or
URL[-17:]=='/manage_workspace' and _['sequence-start']"
dtml-call "REQUEST.set('a_', _['sequence-index'])"
/dtml-if
/dtml-in
Here, the variable 'a_' represents the "active" tab. If the last part of
the URL matches one of the manage_options of the current object, then
that tab will be the highlighted one. Otherwise, the first tab will be
highlighted.
It should ideally be possible to tell manage_tabs what tab should be
highlighted, imperatively, when required.
However, in the absence of such a mechanism, I have changed the DTML
files in ZTopic like this:
The form searchEdit.dtml is really part of the "Search Criteria" logic,
so I want that tab highlighted. That tab's action attribute is called
"editForm". Therefore, in the file searchEdit.dtml, I replace this:
BODY BGCOLOR="#FF" LINK="#99" VLINK="#55"
!--#var manage_tabs--
pEdit catalog search criterion number dtml-var "index+1"
on Catalog strongdtml-var catalog_id/strong./p
With this:
BODY BGCOLOR="#FF" LINK="#99" VLINK="#55"
dtml-with "_.namespace(URL='editForm')"
dtml-var manage_tabs
/dtml-with
pEdit catalog search criterion number dtml-var "index+1"
on Catalog strongdtml-var catalog_id/strong./p
(I modernised the !--#var ...-- to dtml-var ... along the way.)
To get the full effect, you'd need to do a similar trick with the other
dtml files in ZTopic.
Any takers for a full patch? Or, is there a better way of doing this
that I don't know about?
--
Steve Alexander
Software Engineer
Cat-Box limited
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Re: [Zope-dev] ZTopic displays wrong tabs
Steve Alexander wrote: BODY BGCOLOR="#FF" LINK="#99" VLINK="#55" dtml-with "_.namespace(URL='editForm')" dtml-var manage_tabs /dtml-with pEdit catalog search criterion number dtml-var "index+1" on Catalog strongdtml-var catalog_id/strong./p Or, I could have used the less-clear one-liner: dtml-var "manage_tabs(_.None, _, URL='editForm')" Any preference? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] adding attributes to a python product
Hi folks, I have a Python Product that I'm developing. During the course of development, I want to add a new attribute. All new instances get this attribute, as it is defined with a default value in the constructor. In addition, all instances that get edited via the web get the attribute, as the edit-processing method is defined to have a default value for this attribute. Is there any way of interacting with the ZODB persistence machinery to add the default attribute to all instances as they are brought out of persistent storage -- so that I can just restart Zope, and have all of my instances updated as I use them ? I can't find the right method or whatever in the ZODB on-line docs, or in the source. Thanks for any help. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Product Data Storage
Andy Dawkins wrote: So my question is this: What are peoples opinions on storing shared product data? Where should it be placed? Should this ability be added to Zope as a standard? So, this would be the zope equivalent of the unix "/etc/" directory? Perhaps you could have "etc (Product Settings)" as a subfolder of control panel. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Help needed: why is this DTML not working in zope 2 ?
Steve Alexander wrote:
Gilles Lavaux wrote:
Argh!!!
no, I made a typo error : it was !--#var image_name--.the syntax was good.
Ok, I will use the new syntax in my new sites. But for my old site, I will
not modify my ~500 dtml methods, except if there is a way to automate the
change.
You can write a pretty simple external method to walk your Zope object
heirarchy looking for DTML Methods and DTML documents, then altering the
syntax. Shouldn't take more than an hour to write and debug and test and
document, if you've written stuff in Python before.
I'm off to a meeting for a few hours, but harrass me later and I'll send
to the list a proof-of-concept external method to get you started.
An external method for automated change from old syntax to new syntax
follows.
* Use at your own risk
* No warranty implied or given
* Use on a copy of your main Zope site
* Back up data.fs three times before starting
* Not guarenteed not to spin your processor and never terminate
* Run on a copy of Zope in debug mode (-D) to see the print statements
* Barely tested, if at all
import re
def convert_dtml(self):
"""Convert DTML Methods and DTML Documents from old syntax to
new syntax.
Warning: recursive! Might just eat all your stack.
Does not work on subclasses of DTML Method and DTML Document.
Preserves normal comments, and handles instances of "--" in
quotes.
"""
print 'convert_dtml: id=%s' % self.title_and_id()
if hasattr(self, 'meta_type') and \
(self.meta_type == 'DTML Method' or \
self.meta_type == 'DTML Document'):
convert(self)
# should this be "isPrincipiaFolderish"?
if hasattr(self, 'isAnObjectManager') and self.isAnObjectManager:
for v in self.objectValues():
v.convert_dtml()
_convert_regex = re.compile('!--#(/?)(([^"-]+?|"[^"]*?"|-[^-])+?)--')
def convert(dtml_item):
print 'converting...'
title = dtml_item.title
# like document_src, but doesn't require RESPONSE
data = dtml_item.PrincipiaSearchSource()
print 'data'
print data
newdata = _convert_regex.sub('\g1dtml-\g2', data)
print 'newdata'
print newdata
print 'end----'
dtml_item.manage_edit(newdata, title)
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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Re: [Zope-dev] Help needed: why is this DTML not working in zope 2 ?
Steve Alexander wrote:
An external method for automated change from old syntax to new syntax
follows.
* Use at your own risk
* No warranty implied or given
* Use on a copy of your main Zope site
* Back up data.fs three times before starting
* Not guarenteed not to spin your processor and never terminate
* Run on a copy of Zope in debug mode (-D) to see the print statements
* Barely tested, if at all
_convert_regex = re.compile('!--#(/?)(([^"-]+?|"[^"]*?"|-[^-])+?)--')
Actually, I missed something in the original regex, above. (Funny how I
noticed just after I pressed the 'send' button!)
It should read like this:
_convert_regex =
re.compile('''!--#(/?)(([^"-]+?|"[^"]*?"|'[^']*?'|-[^-])+?)--''')
The whole thing again -- same disclaimers apply, only more so :-)
import re
def convert_dtml(self):
"""Convert DTML Methods and DTML Documents from old syntax to
new syntax.
Warning: recursive!
This assumes that DTML Method and DTML Document haven't been
subclassed.
"""
print 'convert_dtml: id=%s' % self.title_and_id()
if hasattr(self, 'meta_type') and \
(self.meta_type == 'DTML Method' or \
self.meta_type == 'DTML Document'):
convert(self)
# should this be "isPrincipiaFolderish"?
if hasattr(self, 'isAnObjectManager') and self.isAnObjectManager:
for v in self.objectValues():
v.convert_dtml()
_convert_regex =
re.compile('''!--#(/?)(([^"-]+?|"[^"]*?"|'[^']*?'|-[^-])+?)--''')
def convert(dtml_item):
print 'converting...'
title = dtml_item.title
# like document_src, but doesn't require RESPONSE
data = dtml_item.PrincipiaSearchSource()
print 'data'
print data
newdata = _convert_regex.sub('\g1dtml-\g2', data)
print 'newdata'
print newdata
print 'end'
dtml_item.manage_edit(newdata, title)
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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Re: [Zope-dev] How to use document templates
Jarkko Veijalainen wrote: Hi! Where can i find S_I_M_P_L_E example of using document templates with zope/python. I have this external method, wich return several variables from object class. I want to embed to results in DTML page. The method is called from Zope by HTML form with 3 input attributes. Right now i have only managed to get obj.member in return plain screen. I can't use dtml-var tag, because i need to send those input values to the external method. ( i must be sound like real newbie, in fact i'm :) ) How i get those results in DTML page? Is the templates the answer or this there better way to this. This question really belongs at on the [EMAIL PROTECTED] mailing list, as it is to do with using Zope in a standard way, rather than developing Zope. Sounds to me like you're not really sure where to start. Try going through the Job board tutorial, as it will give you an idea of how things work together. http://www.zope.org/Members/mukhsein/job_board_howto If you want something that is easier to follow, with screenshots and fuller explanations, and you don't mind paying for it, you might want to look at Beehive's ZClass Tutorial. http://hive.beehive.de/Beehive/www.beehive.de/Zope/ZClassTutorialEnglish_html Also, take a look at the Zope documentation project. http://zdp.zope.org Furthermore, there's a tutorial that comes packaged with the latest 2.2 beta versions of Zope. You might like to try that, too. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] More comments on ZPatterns
Steve Spicklemire wrote: I just want to make sure I understand... is the intention that property management needs to be done on each instance separately? So if I add a new property to one of my property sheets, I need to somehow update the propertysheets of each of the instances? Also if I need to create propertysheets for each instance... where should that be done? I suppose it makes sense to put that in the Specialist that handles the object that gets the properties?...no? No need for all that. Your instances are DataSkins, and they get their PropertySheets via an InjectionFolder. All you need to do is tell a DataManager that is in an appropriate InjectionFolder that it should handle DataSkins of whatever meta_type your instances have. Furthermore, configure this DataManager to provide the PropertySheets you want, with sensible default values, and suddenly, all your instances suport this propertysheet. An "appropriate InjectionFolder" is one that lies in the acquisition path of your instances. [postscript: I only realized this stuff a couple of days ago, when I started using ZPatterns on a project :-) ] -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] error adding specialist
I've come across an error on trying to add a Specialist.
Zope 2.2b4, ZPatterns latest release (ZPatterns-0-4-0a1).
Go to the zope management pages, as a Manager.
Choose to add a Specialist.
Leave the "Create Default Rack of type" drop-down set to "Rack".
Put in an appropiate id, such as "test".
Press "Add".
We get a Zope error:
Error Type: TypeError
Error Value: keyword parameter redefined
Traceback (innermost last):
File /usr/local/zope/SiteBox/lib/python/ZPublisher/Publish.py, line
222, in publish_module
File /usr/local/zope/SiteBox/lib/python/ZPublisher/Publish.py, line
187, in publish
File /usr/local/zope/SiteBox/lib/python/Zope/__init__.py, line 221, in
zpublisher_exception_hook
File /usr/local/zope/SiteBox/lib/python/ZPublisher/Publish.py, line
171, in publish
File /usr/local/zope/SiteBox/lib/python/ZPublisher/mapply.py, line
160, in mapply
(Object: manage_addSpecialist)
File /usr/local/zope/SiteBox/lib/python/ZPublisher/Publish.py, line
112, in call_object
(Object: manage_addSpecialist)
File
/usr/local/zope/SiteBox/lib/python/Products/ZPatterns/Specialists.py,
line 71, in manage_addSpecialist
File /usr/local/zope/SiteBox/lib/python/Products/ZPatterns/PlugIns.py,
line 436, in _constructPlugIn
TypeError: (see above)
The error occurs because the _constructPlugIn() method of PlugIns.py
attempts to give "id" to manage_addRack as a keyword argument, whereas
it has already been given the id as a positional argument. Actually, I
think what it is being given as an id is wrong too :-)
The offending line is 436:
return apply(getattr(product, method), (product,)+args, kwargs)
The rest of this is mainly for my benefit, and will be obvious to anyone
familiar with the code :-)
"getattr(product, method)" evaluates to the python method
manage_addRack, and it appears to be a bound method.
"product" is a __FactoryDispatcher__ instance.
"args" is None, or ().
"kwargs" is {'id': 'defaultRack'}.
The signature of manage_addRack() is:
def manage_addRack(self, id, title='', REQUEST=None):
and is effectively getting called as:
instance.manage_addRack(some __FactoryDispatcher__, id='defaultRack')
I'm not sure whether the method intended to get an unbound method rather
than a bound one, or whether "id" needs special handling here.
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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[Zope-dev] Re: error adding specialist
"Phillip J. Eby" wrote: I found this one on Saturday. The problem is that Zope recently changed the way constructors bind to their factory objects, and the "self" that ZPatterns is providing to the constructors is no longer needed. I've changed ZPatterns to fix this (still maintaining 2.1.x compatibility in the process) and a few other reported and unreported bugs, but haven't had time to issue a new release just yet. I'm up to my neck in "regular job" work for the next few days. My quick "2.2 only" fix is to change line 436 of PlugIns.py to this: return apply(getattr(product, method), args, kwargs) Hopefully I'll have a release out before the ZPatterns chat Friday, though. Great. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Designing with ZPatterns
Quick question on designing with ZPatterns: Is a developer meant to specialise Specialist by defining a subclass, as is the case in LoginManager? Or, given how many plugpoints Specialist has, is it best to instantiate Specialists as-is, and fill them with DTML methods, External methods and triggers and so forth. Then, when you want a new one, it gets constructed by some sort of wizard. Or, is the answer "whichever seems most appropriate" ? Thanks. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] ZPatterns -- trigger add events not working
I have a GenericTrigger in a Folder with Customizer support. When I set it to trigger upon Add, my method doesn't get triggered when I add a new DataSkin-derived-ZClass instance. However, when I set it to trigger on Change, my method gets called on adding a new DataSkin. I can't see anything obviously amiss in the ZPatterns code. I've inserted print statements into the _objectChanging() and _objectAdding() methods of DataManagers.DataManager. It seems that when I add a DataSkin-derived-ZClass, it gets added and also changed set in a single transaction, and only one of them gets reported to the trigger. Strangely, the call to _objectChanging() comes before the call to _objectAdding(). Is this a bug, or is it the expected behaviour? Thanks. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns -- trigger add events not working
Steve Alexander wrote: You could have a flag in DataSkin instances called _has_been_added. It is initially cleared. It gets set when manage_afterAdd is called on it. The DataSkin sends an _objectChanging event only if the _has_been_added flag is set. Of course, the name of the attribute should be more like _v_has_been_added :-) -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] External Method Missery
Chris Withers wrote:
I think this is a bgu so I'll chuck it into the collector unless someone
tells me otherwise...
I have an external method called navTree (dtml-tree was too broken to
fix in the time frame :( ) with a spec as follows:
def navTree(self,start):
It's called in some DTML as:
dtml-var "nav_tree(PARENTS[-2])"
which is fine, unless I call it with the following:
dtml-var "nav_tree(start=PARENTS[-2])"
in which case I get:
TypeError: not enough arguments; expected 2, got 0
which is not very helpful :(
Any ideas?
Ok.
I debugged this by creating an external method to see what it is
actually receiving:
def navtree(*arg, **kw):
print 'navtree'
print 'arg= ', arg
print 'kw= ', kw
print
For dtml-var "navtree(PARENTS[-1])" we get:
navtree
arg= (Application instance at 858ac40,)
kw= {}
For dtml-var "navtree(start=PARENTS[-1])" we get:
navtree
arg= ()
kw= {'start': Application instance at 858ac40}
That is, no "self" argument is getting passed.
Now, I change the external method to have a "self" argument first:
def navtree(self, *arg, **kw):
print 'navtree'
print 'self=', self
print 'arg= ', arg
print 'kw= ', kw
print
For dtml-var "navtree(PARENTS[-1])" we get:
navtree
self= Application instance at 858ac40
arg= ()
kw= {}
For dtml-var "navtree(start=PARENTS[-1])" we get:
navtree
self= Folder instance at 8589ea0
arg= ()
kw= {'start': Application instance at 858ac40}
So, in the first case, you're not getting the current context passed in,
but you are getting it in the second case.
One more try:
def navtree(self, **kw):
print 'navtree'
print 'self=', self
print 'kw= ', kw
print
For dtml-var "navtree(PARENTS[-1])" we get:
navtree
self= Application instance at 858ac40
kw= {}
For dtml-var "navtree(start=PARENTS[-1])" we get:
navtree
self= Folder instance at 8589ea0
kw= {'start': Application instance at 858ac40}
Looks like it is assumed that the first non-keyword argument should be
passed as the client (ie "self").
So, you can fix your exception by giving "start" a default value:
def navTree(self,start=''):
However, you'll have to always use the keyword form of calling it:
dtml-var "nav_tree(start=PARENTS[-2])"
Or otherwise, provide a client for it:
dtml-var "nav_tree(this(), PARENTS[-2])"
As for why this is the case... I have other things to do this morning,
so I won't go rooting around in the DTML source just now. [ Although, it
sure is tempting :-) ]
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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[Zope-dev] Re: Another mystery for you ;-)
Chris Withers wrote: I was trying to use 'if o in REQUEST.PARENTS' to expand branches on the way to the currently displayed object and was running into trouble which lead me to try out the following code: `REQUEST.PARENTS[0]`+`o`+`o==REQUEST.PARENTS[0]`+`o is REQUEST.PARENTS[0]` Now, this renders the following in the case where the branch _should_ expand: Folder instance at 88cbb30Folder instance at 88cbb3000 What I don't understand is how two objects, apparently at the same memory location, return false from both 'object1==object2' and 'object1 is object2'. Smells like an Acquisition Wrapper misunderstanding :-) http://www.zope.org/Members/michel/Projects/Interfaces/AcquisitionWrappedObject Use the aq_self or aq_parent attribute to do your comparisons to get your object out of its magic acquisition wrapper. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] External Method Missery
Chris Withers wrote: Shane Hathaway wrote: that last algorithm falls to pieces. The solution is to always provide the "self" argument. When calling or in the signature of your external method? Both. Declare it like this: def external_method(self, ...other args...): Use it like this: dtml-var "external_method(this(),...other args..." ? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: ZPatterns: Errors in triggered methods + patch
Steve Alexander wrote: Latest ZPatterns release. Zope 2.2b4. If I raise an error in an external method that is called by a GenericTrigger, I sometimes get a strange log message: various bits snipped I've put the call to each Agent's "change observed" event in a try-except block. This makes my Zope instance happier when I do stupid things in external methods, and has the additional advantage of insulating other Agents from one particular Agent's problems. Of course, a patch that made a suitable log entry would be better than what I just posted to the list, which just writes the execption and traceback to stderr. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Beginning Zope User
Hi John, John Gunnar Carlsson wrote: Help! I downloaded a product and uploaded it to my directory, but I don't know how to unzip it. I'm using NT. Whenever I load WinZip it will only let me unzip it to local places on the hard disk but nowhere on the Zope directory itself. ___ Zope-Dev maillist - [EMAIL PROTECTED] I'd really like to help you with this, but there's two reasons that I can't right now. 1: You've posted this message to the [EMAIL PROTECTED] mailing list. This list is for discussion about developing the innards of Zope and really technical stuff like that. The correct mailing list for your question is the more general [EMAIL PROTECTED] 2: I'm not sure what you're asking. When you ask again in [EMAIL PROTECTED], be sure to say all of the following: * Exactly which version of Zope you have installed * Where on your harddisk you have installed it * What the product is you have downloaded * Exactly the steps you have tried to follow to install the software * What documentation you are getting your steps from, and where you got that documentation from This might all sound like a lot, but it really is the minimum I'd need in order to be able to answer your question correctly. Also, if you ask on [EMAIL PROTECTED], others who might have a similar problem will benefit from any answer. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns: missing docstring in getItem()
"Phillip J. Eby" wrote: Changes checked in. I should be releasing an alpha5 tomorrow. That's great. Did you get my message about errors in triggered methods? I realised that I only sent it to the zope-dev list, and not cc-ed to you. I had hoped to finish my work on proxy roles, ZClass plugins, Does that increase the number of "Waaa!" comments in the code? and maybe even my local-roles stuff first and make it a "beta" release, *If* you get time, can you put a note on the ZPatterns Wiki, or to the zope-dev mailing list briefly describing what proxy roles, and local roles mean in the context of ZPatterns? Thanks. (Of course, if any other ZPatterns gurus can answer that...) -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns: BTree folder w/ customizer support
Steve Alexander wrote: I want to combine Shane Hathaway's BTreeFolder product with ZPatterns to create a "BTree folder w/ Customizer support". snip! Instead, why not make PlugInContainer a mix-in class, and have concrete classes for PlugInFolder and PlugInBTreeFolder ? Then, it is easy to have a CustomizerFolder and a CustomizerBTreeFolder. Then again, I wouldn't mind if things stay as they are, except that PlugInContainer is made to derive from BTreeFolder rather than Folder. Of course, that creates a dependency that you need the BTreeFolder product in order to use ZPatterns. Or... I could alter Shane's BTree Folder product to split it into a mix-in class and a usable folder class. Would that work, I wonder? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns: missing docstring in getItem()
"Phillip J. Eby" wrote: That's great. Did you get my message about errors in triggered methods? Yes, I did, but the solution requires some more thought. I had thought I had the "Transactional" machinery set up so that stuff was only called during transaction phases where it was safe to throw errors. So I'm going to have to go back and review that. However, I also think that errors in triggers should result in a rollback-and-abort, rather than silently failing, which could cause many other problems. Right. So the application designer has the choice of whether to put their methods that are called by GenericTriggers in try-except blocks, if it doesn't matter if the trigger fails. But it is generally assumed that triggers need to run without exceptions for the application to work consistently. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Making Folders callable
Is there any reason that Folders aren't callable?
That is, you can't directly render a folder with dtml-var
nameofafolder. You have to do something like dtml-var
"nameofafolder.index_html(_.None, _)". But, that's not quite the same
because if the folder lacks an index_html, it gets acquired.
Here's an extra method that can be added to lib/python/OFS/Folder.py, or
to ObjectManager.py, to make Folders render nicely.
# XXX hack to make folders render
# retains compatibility with current behaviour
# if the folder doesn't contain index_html
def __call__(self, *args, **kw):
""" mandatory docstring """
index = self._getOb('index_html', default=None)
if index is not None:
args = (self,) + tuple(args[1:])
return apply(index, args, kw)
return ''
Is this a good idea? Should this go into the Collector as an RFE with
patch?
Actually, I'm not sure why it should be tuple(args[1:]) -- I just copied
that out of ZCallable in the latest PTK CVS. I'd guess you'd want to
check the first argument (client) for whether it is None before
replacing it with self.
Perhaps something like this:
args = (len(args)0 and args[0] or self,) + tuple(args[1:])
Discussion welcomed.
--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net
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Re: [Zope-dev] Optimization and speed
Stephan Richter wrote:
snip Method doc string
Looks like it's more that just a tweak, though :-(
So, how can I use this method? I do not understand the internals of the
ZServer completely.
You've got a RESPONSE object. For HTTP stuff, it will be a HTTPResponse
as defined in lib/python/ZPublisher/HTTPResponse.py.
You can use the write(self, data) method of this response object to
stream data directly to your client, independent (to a degree) of Zope's
transaction processing.
This is the method from HTTPResponse.
def write(self,data):
"""\
Return data as a stream
HTML data may be returned using a stream-oriented interface.
This allows the browser to display partial results while
computation of a response to proceed.
The published object should first set any output headers or
cookies on the response object.
Note that published objects must not generate any errors
after beginning stream-oriented output.
"""
if not self._wrote:
self.outputBody()
self._wrote=1
self.stdout.flush()
self.stdout.write(data)
So, you could set output headers and cookies as needed, then, before the
rest of the processing on your page, have a dtml-call
"RESPONSE.write('the top of the page')".
Then again, I've never tried this. YMMV and all that.
(*off to help cook... won't be reading email for a while*)
--
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Software Engineer
Cat-Box limited
http://www.cat-box.net
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[Zope-dev] ZPatterns: Coad Object Models
Hi Folks, After the ZPatterns chat on Friday, it looked like a few people were thinking of getting into Peter Coad's book "Object Models: Strategies, patterns and applications". I've just received my copy, and I'll be starting it later today. I intend to use a Wiki to record my observations and thoughts about the book, as I read it. I'd like this to be a collaborative learning thing, so anyone else who is reading the book, or who as read it, is most welcome to join in. http://www.zope.org/Members/stevea/CoadObjectModels There's not much up there right now, as I've only read the Acknowledgements at the front :-) -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Redirecting from the manage interfaces.
Chris Withers wrote: Why I'm asking is 'cos it'd be really nice not to have to keep re-writing UI when there's perfectly good stuff available in the management interface, things like add forms, edit forms, etc... However, if you call these from anywhere else, they dump you in the management interface when you're finished rather than going to where you want them to. Any ideas or am I missing the point? Silly idea: Write a wrapper that you put around the RESPONSE object that does its own thing when it is told to redirect. You might have to wrap the REQUEST object too, so that it returns a wrapped RESPONSE object. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] getting request variables values
Leonardo Kenji Shikida wrote: here it is. Try using dtml-var "REQUEST['SSLL_CLIENT_IEMAIL']" instead. Kenji SSL_CLIENT_IEMAIL [EMAIL PROTECTED] -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] getting request variables values
Chris Withers wrote:
Evan Simpson wrote:
The value you're after is stored in the 'environ' section of the request.
Unlike 'other' and 'cookies' keys, 'environ' keys can't generally be fetched
as attributes or keys of REQUEST. You need to access them as
REQUEST.environ['keyname'].
Heh, I thought so, I presume REQUEST.get won't get out of environ
either?
I posted this in the collector and was told it behaved as expected (and
would suck the key out of any of the sub-dictionaries)
What's the real story? ;-)
I'm looking at 2.2.0final.
From the comments in the code, it *ought* to look in the environment
first.
def __getitem__/__getattr__ from HTTPRequest.py:
"""Get a variable value
Return a value for the required variable name.
The value will be looked up from one of the request data
categories. The search order is environment variables,
other variables, form data, and then cookies.
"""
However, looking in the code, it starts off by looking in "other", and
doesn't look in "environ" at all.
I suggest a patch to go right after the method's docstring:
def __getitem__(self,key,
default=_marker, # Any special internal marker will
do
URLmatch=regex.compile('URL[0-9]+$').match,
BASEmatch=regex.compile('BASE[0-9]+$').match,
):
"""Get a variable value
Return a value for the required variable name.
The value will be looked up from one of the request data
categories. The search order is environment variables,
other variables, form data, and then cookies.
""" #"
+ environ=self.environ
+ if environ.has_key(key):
+ return environ[key]
other=self.other
if other.has_key(key):
if key=='REQUEST': return self
return other[key]
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Re: [Zope-dev] getting request variables values
Steve Alexander wrote:
However, looking in the code, it starts off by looking in "other", and
doesn't look in "environ" at all.
I suggest a patch to go right after the method's docstring:
def __getitem__(self,key,
default=_marker, # Any special internal marker will
do
URLmatch=regex.compile('URL[0-9]+$').match,
BASEmatch=regex.compile('BASE[0-9]+$').match,
):
"""Get a variable value
Return a value for the required variable name.
The value will be looked up from one of the request data
categories. The search order is environment variables,
other variables, form data, and then cookies.
""" #"
+ environ=self.environ
+ if environ.has_key(key):
+ return environ[key]
other=self.other
if other.has_key(key):
if key=='REQUEST': return self
return other[key]
Ok... I was wrong :-/
A bit later we have:
if isCGI_NAME(key) or key[:5] == 'HTTP_':
environ=self.environ
if environ.has_key(key) and (not hide_key(key)):
return environ[key]
return ''
I was only sort-of wrong though :-)
The code certainly doesn't stick exactly to its docstring. The "other"
dictionary is seached first, then URLx where x is a number.
Then "environ" is searched, but *only* if the key begins with 'HTTP_' or
is in the following list:
SERVER_SOFTWARE, SERVER_NAME, GATEWAY_INTERFACE, SERVER_PROTOCOL,
SERVER_PORT, REQUEST_METHOD, PATH_INFO, PATH_TRANSLATED, SCRIPT_NAME,
QUERY_STRING, REMOTE_HOST, REMOTE_ADDR, AUTH_TYPE, REMOTE_USER,
REMOTE_IDENT, CONTENT_TYPE, CONTENT_LENGTH, SERVER_URL
Looking in Leonardo's sample environment, a posted to this list, there's
a lot of keys that won't get matched:
SSL_*
HTTPS_*
REMOTE_PORT
SERVER_ROOT
SERVER_SIGNATURE
My question is "why was __getitem__ of HTTPRequest.py designed this
way?".
Is there a good reason that it filters the keys according to membership
of a standard-cgi-keys list, or whether they start with 'HTTP_' ?
Would there be any disadvantage to altering __getitem__ so that it
behaves according to its docstring?
If so, the patch would probably be something like:
line 753.
""" #"
+ environ=self.environ
+ if environ.has_key(key) and (not hide_key(key)):
+ return environ[key]
other=self.other
if other.has_key(key):
if key=='REQUEST': return self
return other[key]
if key[:1]=='U' and URLmatch(key) = 0:
path = self._script + self._steps
n = len(path) - atoi(key[3:])
if n 0:
raise KeyError, key
URL=join([other['SERVER_URL']] + path[:n], '/')
other[key]=URL
self._urls = self._urls + (key,)
return URL
- if isCGI_NAME(key) or key[:5] == 'HTTP_':
- environ=self.environ
- if environ.has_key(key) and (not hide_key(key)):
- return environ[key]
- return ''
Comments?
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Re: [Zope-dev] getting request variables values
Steve Alexander wrote: My question is "why was __getitem__ of HTTPRequest.py designed this way?". Is there a good reason that it filters the keys according to membership of a standard-cgi-keys list, or whether they start with 'HTTP_' ? Would there be any disadvantage to altering __getitem__ so that it behaves according to its docstring? ...although the class docstring says that the environment variable names are as in the CGI specification (http://hoohoo.ncsa.uiuc.edu/cgi/env.html). It doesn't say that they should **only** be from the CGI specification, though. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] DateTime.py
There's a problem with strftime() in DateTime.py.
Try this DTML method to see:
dtml-var standard_html_header
dtml-let time1="_.DateTime('2000/07/23 BST')"
Time: dtml-var time1 br
Time: dtml-var time1 fmt=Date br
Time: dtml-var time1 fmt="DayOfWeek" br
Bad Time: dtml-var time1 fmt="%a, %d %B %Y %Z" br
Time: dtml-var "time1.fCommonZ()" br
/dtml-let
dtml-let time1="_.DateTime('2000/07/23 GMT')"
Time: dtml-var time1 br
Time: dtml-var time1 fmt=Date br
Time: dtml-var time1 fmt="DayOfWeek" br
Time: dtml-var time1 fmt="%a, %d %B %Y %Z" br
Time: dtml-var "time1.fCommonZ()" br
/dtml-let
dtml-var standard_html_footer
Note that the time given in the line "Bad Time:" above is actually wrong
-- it reports itself to be in GMT, but gives the time as one hour
behind.
If you specify a date as /MM/DD, then the date that is stored is
(quite reasonably) midnight on that day, in your timezone.
This gets rendered back into days correctly for methods such as
DateTime.day(), as these methods directly ask the DateTime instance for
what it thinks the day is. The instance replies in the context of its
own timezone (as given in the constructor, or the local timezone if none
was given), and so it returns the expected result.
If you use the strftime() method, by using fmt="%d %H %Z" or whatever,
instead of asking the DateTime instance to do the formatting, the
formatting is delegated to the Python time module.
Unfortunately, at any particular time, the Python "time" module only
knows about two timezones: Your local one (with and without daylight
savings) and GMT.
Therefore, in any other timezones, Pythons time.strftime() cannot
correctly render the time.
This is particularly apparent in the current DateTime.py, because its
strftime method just interprets the internal representation of the time
as GMT, whatever.
We can fix this easily:
*** lib/python/DateTime/DateTime.py Sun Jul 23 20:03:05 2000
--- lib/python/DateTime/DateTime.old.py Sun Jul 23 20:03:04 2000
***
*** 1376,1382
return millis
def strftime(self, format):
! return strftime(format, gmtime(self.toZone('GMT').timeTime()))
# General formats from previous DateTime
def Date(self):
--- 1376,1382
return millis
def strftime(self, format):
! return strftime(format, gmtime(self.timeTime()))
# General formats from previous DateTime
def Date(self):
Now, at least, the time will be reported correctly, although not really
usefully if you want to have the time formatted in the timezone given to
the DateTime instance.
Also, this patch will cause formatting calls to create a new DateTime
instance if the instance you want to format is not in timezone GMT+0.
The only general solution that I can see is to replicate the formatting
algorithms of the time module in DateTime.py, but written so that they
take account of timezones.
There is another issue:
When I call _.DateTime('2000-07-23'), what do I mean?
The current implementation of DateTime interprets that as "midnight (the
earliest possible time) on 2000-07-23, interpreted in the local
timezone".
However, if I'm being naive, I might think that I'm refering to a Day,
and that the Day should be the same day no matter what timezone I put it
into.
In that case, the DateTime module needs rewriting to have a sense of
precision built into it: If I specify a time to the day, I get the
latter behaviour. If I specify the time more precisely, I get the
current behaviour.
Another approach would be to make _.DateTime('2000-07-23') mean Midday,
GMT rather than Midnight, local time. That would give the latter
behaviour for most timezones at most times; the exceptions being places
near the international date line that are in daylight savings time.
--
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Software Engineer
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Re: [Zope-dev] DateTime.py -- ignore the patch
Steve Alexander wrote:
This is particularly apparent in the current DateTime.py, because its
strftime method just interprets the internal representation of the time
as GMT, whatever.
We can fix this easily:
*** lib/python/DateTime/DateTime.py Sun Jul 23 20:03:05 2000
--- lib/python/DateTime/DateTime.old.py Sun Jul 23 20:03:04 2000
***
*** 1376,1382
return millis
def strftime(self, format):
! return strftime(format, gmtime(self.toZone('GMT').timeTime()))
# General formats from previous DateTime
def Date(self):
--- 1376,1382
return millis
def strftime(self, format):
! return strftime(format, gmtime(self.timeTime()))
# General formats from previous DateTime
def Date(self):
Now, at least, the time will be reported correctly, although not really
usefully if you want to have the time formatted in the timezone given to
the DateTime instance.
No, no, no!
Ignore the patch, it is a placebo :-/
I should read these things back more carefully...
The bit about reimplementing time.strftime() in DateTime.py still holds
though.
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Re: [Zope-dev] DateTime.py -- ignore the patch
Steve Alexander wrote:
No, no, no!
Ignore the patch, it is a placebo :-/
I should read these things back more carefully...
The bit about reimplementing time.strftime() in DateTime.py still holds
though.
In brief, though -- and hopefuly clearer this time:
If you format DateTimes using strftime (that is, fmt="%d %m" and so
forth), you can only have the time rendered in GMT.
This is confising the counter-intuitive, as the internal timezone of the
DateTime instance is not preserved.
The only reasonable way around this is to reimplement the strftime
function of Python's time module in DateTime.py, but have it take
account of timezones.
As another issue, when you create a new DateTime instance with
_.DateTime('-MM-DD'), the actual time stored is midnight in your
local timezone. A more useful default time would be midday, GMT. This
shouldn't break much code, as the current behaviour isn't well
documented and is arguably broken anyway.
--
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Re: [Zope-dev] Incorrect Padding?
Chris Withers wrote:
Does anyone know what this means?
The page views fine for me and this is the first error of this type I've
seen since we launched the archives. I wonder what WebWhacker is doing
to cause this?
Well... you can get an incorect padding error like this:
import binascii
binascii.a2b_base64('a ')
Traceback (innermost last):
File "stdin", line 1, in ?
binascii.Error: Incorrect padding
You can also get by adding arbitrary non-space characters to the end of
a basic authentication string.
Here's the line that'll be causing the problem.
(Zope 2.2final, lib/python/AccessControl/User.py line 441)
name,password=tuple(split(decodestring(split(auth)[-1]), ':', 1))
My guess is that the argument "auth" passed to validate() has some
trailing characters. Either that, or WebWhacker passed just "Basic " as
an auth string.
Maybe log the auth argument and re-whack your site. (Warning... this is
certainly a nasty security hole. Be sure to get rid of the logging
afterwards.)
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Re: [Zope-dev] Incorrect Padding?
Chris Withers wrote: Steve Alexander wrote: My guess is that the argument "auth" passed to validate() has some trailing characters. Either that, or WebWhacker passed just "Basic " as an auth string. Yuk, that sounds like a Zope bug. Collector time with patch? A judicious string.strip should solve the problem, surely? from base64 import decodestring from string import * auth="Basic" tuple(split(decodestring(split(auth)[-1]), ':', 1)) Traceback (innermost last): File "stdin", line 1, in ? File "/usr//lib/python1.5/base64.py", line 46, in decodestring decode(f, g) File "/usr//lib/python1.5/base64.py", line 32, in decode s = binascii.a2b_base64(line) binascii.Error: Incorrect padding The problem is in the expression "split(auth)[-1]". If the auth string contains no space but at least one character, then split(auth)[-1] == split(auth)[0]. Perhaps what we should do is change this (lib/python/AccessControl/User.py, line 438) # Only do basic authentication if lower(auth[:6])!='basic ': return None name,password=tuple(split(decodestring(split(auth)[-1]), ':', 1)) to this: # Only do basic authentication if lower(auth[:6])!='basic ' and len(auth)6: return None name,password=tuple(split(decodestring(split(auth)[-1]), ':', 1)) or even: # Only do basic authentication if lower(auth[:6])!='basic ': return None name,password=tuple(split(decodestring(auth[6:]), ':', 1)) (Need to check the last one with the RFC -- are you allowed anything else other than "basic blarglebase64usernamepassword" ? ) Maybe log the auth argument and re-whack your site. (Warning... this is certainly a nasty security hole. Be sure to get rid of the logging afterwards.) I didn't whack my site, I just got mailed the error... Well... try whacking yourself and see what the whacker actually sends -- we're just guessing until then. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
