Re: [Zope3-Users] how work around broken egg?
On Friday 25 January 2008, John wrote: I easy_installed a broken z3c.form-1.7.2-py2.4.egg into my zopeproject. I'd like to fix it. It looks possible to use svn to checkout 1.7.0 or 1.8.0 right into the egg directory. Will this work or is there some setup script to run? Is there a way to get 1.7.2 via svn (_1)? Is there a better way than using svn? Any suggestions appreciated. I deleted the 1.7.2 release altogether, because it contained new features. That was really bad, because people would get new APIs but expect a bug fix release. If you remove the 1.7.2 release from your egg directory, it will now download 1.8.0, which is correct. Also, when the eggs are fixed, will another bin/easy_install z3c.form be sufficient to get the missing files? Right now it tells me z3c.form 1.7.2 is already the active version. Will I need to remove the egg somehow and re-install it to get the complete files? I believe easy_install has an update option. Yes, it does: -U Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Beginner: Reference to ZPT macros
On Thursday 17 January 2008, Hermann Himmelbauer wrote: I personally don't like macros that much, therefore I prefer Stephan Richters pagelet/viewlet approach, which you can find in z3c.pagelet. We need to give credit to Roger here. He came up with pagelets as a response for hating macros like you do and not liking a pure viewlet approach either. That said, I have to agree, I like the pagelet pattern a lot too and it works beautiful for your typical Web application. Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Zope on WSGI for Deployment - best to still use proxy behind apache? Good/bad servers?
On Wednesday 23 January 2008, Jeff Shell wrote: Is there any preferred server to use or not use? why? Originally we wanted to drop support for zope.server over twisted, but it turned out that zope.server was much more stable. And ... mod_wsgi. I don't know much about it, but is it better to run through that than to go through mod_proxy? We played with it a little bit and got it working without any hassle. But we did not test performance. We had one new customer totally surprise us with their traffic/load (mostly solved, for now, due to some aggressive caching) and I'm interested in trying to find new setups. I think the server itself is not really creating the bottleneck. What you really want to do, is keep your transaction times in Zope very small, like in the 100ms range, because a Zope thread is blocked for that long. If you have queries or tasks that take a long time (1sec), then you should run that in a thread/process that does not block the server. A good package to start with would be lovely.remotetask -- I hope that we will soon release an extension that allows you to scale it better. Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] How to store objects with multiple owners in the ZODB
On Tuesday 08 January 2008, Hermann Himmelbauer wrote: My question is: How would I store these documents in the ZODB? If I create a container object for each user and store the document there, how would then other users get a link to their own folder? Moreover, what happens if the original owner abandons the document? You clearly thought about the problem, since you already provided solutions. :-) It all depends how you identify an owner. I do this by checking whether a user has been granted the Owner role locally. Okay, so now we know how to retrieve the information. Next, how can we efficiently extract a list of all the documents a user owns. The answer is a catalog. You can create an index that records the owners of each document. (That should be about 5-10 lines of code.) When you provide the list, you simply return catalog query results, instead of iterating through all items in a folder. What to do when someone abandons a document depends really on your decision where to locate it and how you implement other views. 1. If you have one large container, the solution is simple. You write a subscriber that checks whether the changed object still has an owner. If not, it is deleted. There is not need for more info tracking. 2. If you store the documents locally, and the removed owner matches the location user, I would move the documents either to a global abandoned folder or to the user folder of the next user on the list. Which way you want to go, depends on your other design goals. If I have one huge container that holds all documents, how would then list users their documents? Use a catalog query. Seriously; it is efficient. The other issue is how to set up permissions on these objects, would I e.g. store the owners along with the object (e.g. as an object attribute)? As I said before, I do this using roles. Because you want to assign special permissions for owners anyways. Keeping the information twice, is just a senseless bookkeeping exercise. That said I commonly create a property for these cases: @apply def departmentManagers(): role_id = 'pkg.DepartmentManagerOwner' def get(self): prm = IPrincipalRoleManager(self) return tuple([u for u, p in prm.getPrincipalsForRole(role_id)]) def set(self, value): prm = IPrincipalRoleManager(self) for principal_id, perm in prm.getPrincipalsForRole(role_id): prm.unsetRoleForPrincipal(role_id, principal_id) for principal_id in value: prm.assignRoleToPrincipal(role_id, principal_id) return property(get, set) Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] sqlalchemy and FieldProperty
On Friday 21 December 2007, Darryl Cousins wrote: I find that when I map a class to a table I lose the auto-magic vaidation provided by FieldProperty when setting attributes. I bet you that sqlalchemy does some evil class hacking. Actually, I gotta check this out. :-) Yeah, from looking at the mapper.py module, I can see that really weird things happen there. They overwrite attributes left and right. Man, I love persistent! I wish they would have used it as a base for their work. Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] Literal double quoted string within single quoted attribute in ZPT
On Monday 17 December 2007, David Pratt wrote: Hi. Is there solution for create a single quoted attribute using tal:attributes containing literal double quoted items. I am using a python method for generating the string. I understand structure will unquote but it does not work with an attribute. Well, attributes must always be quoted based on the XML spec, right. Otherwise TAL could produce invalid XML. What does the spec actually say about this? I see there is a new z3c.tal package based on lxml. Will I have to go as far as customizing tal to do this? I realize this may be best on the zpt list but it it rarely if ever used these days. Many thanks. Well, if the XML specification allows for your output, we could consider it not working this way a bug. However, it would make the code much more complicated, I think (unless we support structure as well in this case). Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] `easy_install z3c.widget` fails
On Saturday 08 December 2007, Kent Tenney wrote: It can't find z3c.schema Is there a better place to report? http://svn.zope.org/z3c.schema/ But it has not been released as a package yet. I guess that should be done. Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] formlib vs z3c.form
On Thursday 06 December 2007, Adam Summers wrote: How hard is it to get grok to play nicely with z3c.form et al? Has anyone any examples? Since nobody has answered this follow-up question, here is a quick one from me: It is not harder or easier to integrate than other Zope 3 code. I bet you that is probably more of a case of being documented. Since I am not using grok, I cannot give you any examples. Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] wiki refactoring
On Monday 10 December 2007, Roy Mathew wrote: Now that the zope3 wiki has grown from an afterthought, to a signifcantly useful body of knowledge, I'd like to make the following proposal: o split the wiki into smaller bits. o rework the introduction slightly. o fix the question headers o start writing small HOWTOs (like the grok mini-HOWTOs). I am happy to help with any and all of the above. What do you think? I think that the people that recently worked on the Wiki did a fine job. I just browsed through it the past two days and the story is nice. There are a few things that I would have done differently, but it is not major., Since you mentioned in a follow-up E-mail that you meant the FAQ, I had a quick look. I have to agree, it is huge. That's great! :-) But that also means we have to provide a new approach for presentation. I agree with all your points. I think the most important part would be to split the FAQ into themed sections, such as UI Development, Organization, Development Process, etc. Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] zcml for z3c.form
Hi John, On Thursday 24 January 2008, John wrote: I'm converting from formlib to z3c.form. Cool! :-) What should my configure.zcml look like? For formlib it is: browser:page for=zope.app.container.interfaces.IAdding name=.Person class=.browser.PersonAddForm permission=zope.ManageContent / I assume the 'for=' value should change, but to what? Yep, it changes to the container interface: browser:page for=.interfaces.ILimosvc name=.Person class=.browser.PersonAddForm permission=zope.ManageContent / By not using IAdding, it is hard (as in I have spent 30 mins trying to make it work and couldn't) to reuse the default add menu. That said, who still uses it? :-) The Zope 3 menu code is dog slow. Also, note that we do support IAdding for the poor souls that still have or want to use it. See http://svn.zope.org/z3c.form/trunk/src/z3c/form/adding.txt?rev=78513view=auto Regards, Stephan -- Stephan Richter Web Software Design, Development and Training Google me. Zope Stephan Richter ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
Re: [Zope3-Users] sqlalchemy and FieldProperty
On Sun, 2008-01-27 at 13:03 -0500, Stephan Richter wrote: On Friday 21 December 2007, Darryl Cousins wrote: I find that when I map a class to a table I lose the auto-magic vaidation provided by FieldProperty when setting attributes. I bet you that sqlalchemy does some evil class hacking. Actually, I gotta check this out. :-) Yeah, from looking at the mapper.py module, I can see that really weird things happen there. They overwrite attributes left and right. Man, I love persistent! I wish they would have used it as a base for their work. Hi Stephan, Thanks for your comment. Just yesterday I was looking at a couple of external sqlalchemy projects: Elixir [1] and sqlalchemy-validations [2]. I only had a brief look through the code but the way sqlalchemy-validations hooks itself into Elixir seemed point to a way to hook zope fieldproperty in there. Maybe. ;-) [1] http://elixir.ematia.de/trac/ [2] http://code.google.com/p/sqlalchemy-validations/ Regards, Darryl Regards, Stephan ___ Zope3-users mailing list Zope3-users@zope.org http://mail.zope.org/mailman/listinfo/zope3-users
