[Zope-dev] Re: Zope Book at ZopeWiki.org

2004-04-22 Thread Fred Yankowski
On Thu, Apr 22, 2004 at 06:07:10AM -0400, Stephan Richter wrote:
 I tried this and I can tell you that a Wiki is not the right format for a 
 book. While it lowers the entrance points, it is far too simplistic. I 
 eventually changed my master to LaTeX, where I can add as much meta-data and 
 other markup (especially for an index, which is crucial) easily and then I 
 try to create Wiki-friendly STX files from that. 

Would this help...

LatexWiki is a patch to the ZWiki package that allows
rendering of in-line LaTeX.

http://mcelrath.org/Notes/LatexWiki

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Re: [Zope-dev] AW: [Summary] Caching prob with AHCM and headers

2003-09-18 Thread Fred Yankowski
On Thu, Sep 18, 2003 at 11:09:57AM +0100, seb bacon wrote:
 I use squid, which doesn't require last-modified headers.  I guess 
 that's not an option for you, or you'd probably already be using it ;-) 
  But in any case, I don't see why Shane's suggestion of uncommenting 
 the last-modified line shouldn't work.

I use Squid as an HTTP accelerator in front of ZServer.  What do
last-modified headers have to do with this discussion?  Anyway, I have
a strong preference for working with stock code, rather than patching
Zope itself or any of the products.

 I use a standard HTTP Cache Manager for all our caching needs - I have 
 yet to find the granuality allowed by CPM necessary.

Aha, I didn't realize that an HTTP Cache Manger can now handle FSDV
objects.  That does seem to make the CMF CPM unnecessary for my
purposes.  (I'm using Zope 2.6.1, CMF 1.4, and Plone 1.1alpha2).

 (BTW, in the CMF you can associate FS Objects with named cache managers 
 by adding a file called foo.dtml.metadata with the following contents::

I'm able (I realize just now) to associate FS objects with an HTTP
Cache Manager directly from the cache managers Associate tab in the
ZMI, just like other cache-managable types.

 The only class of request for which I need to have a separate policy is 
 requests from people who are actually editing a site.  I have created a 
 customised HTTP Cache Manager which doesn't cache requests for specified 
 URLs.  I then instruct site editors to edit the site using, e.g. 
 'edit.mysite.com' and to view it using 'www.mysite.com'.

Interesting approach.

An HTTP Cache Manager has properties allowing it to be associated with
an external downstream cache such as Squid, so that when a cached
object is updated in Zope the cache manager notifies the external
cache to purge the corresponding URL.  But my few experiments with
that (some months back, on an earlier version of Zope) showed that
Zope would send a NOTIFY message with a different URL than the one
that squid had associated with particular object, apparently because
of URL path transformations caused by virtual hosting and/or skin
lookup; so the old version of the updated object would remain in the
squid cache.  I wonder if that works better now.  I'll try a few
tests...

P.S.  Even if the NOTIFY interaction above worked right, that still
would not address the problem where a page template does not change,
but the generated content on that page does.  I can see where a site
author/editor might want to get a fresher view of such pages than is
necessary for a random visitor.

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Re: [Zope-dev] AW: [Summary] Caching prob with AHCM and headers

2003-09-17 Thread Fred Yankowski
On Wed, Sep 17, 2003 at 10:03:15AM -0400, Tres Seaver wrote:
 On Wed, 2003-09-17 at 07:26, Chris Withers wrote:
  Fred Yankowski wrote:
  
   python: content.meta_type == 'Filesystem Image'
  
  Do you have any content with this metatype?
   
   There is nothing in the portal_catalog with that meta_type.  But there
   are lots of objects with that type:  most everything in
   portal_skins/plone_images/, for example.
  
  Oh, I getcha now... hmmm.. since these are served from disk anyway, what would 
  be the benefit in caching them?
  
  (Dim memories suggest that OFS.Image.Image does some work to circumvent caching, 
  that's probabyl why they'er not being cached...)
 
 Two reasons:
 
   - Browser caches know about the HTTP headers, too. 
 
   - Accelerators (Squid, Apache w/ mod_proxy and caching), cache content
 to reduce load on the appserver.

Right.  I assumed all of that was obvious when I jumped into this
thread.  The CMF Caching Policy Manager object does not itself cache
any objects (unlike the RAM Cache Manager, which does) -- it merely
applies cache control headers to set the freshness of some published
objects so that downstream caches can do real caching and take some
load off of Zope, and perhaps off the network.

My original question concerned a detail of how the CMF Caching Policy
Manager interprets the 'Predicate' of a caching policy:  it seems to
interpret any 'content' object in that predicate as a reference to the
*parent* object of the object being considered for cache header
management.  That made no sense to me, and I pointed to the exact code
involved, but I still don't know if that code is the result of
Undocumented Wisdom or merely a Goof.

Meanwhile, back on the ranch, I'm getting good results with this
policy predicate:

python: content.meta_type == 'Filesystem Directory View'
  
With that, all objects in a Filesystem Directory View get cache
control headers.  The aforementioned Wisdom|Goof prevents me (AFAICT)
from discriminating different meta_types of the individual objects
within the various FSDVs, but so far one policy across all such is
just fine.

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Re: [Zope-dev] AW: [Summary] Caching prob with AHCM and headers

2003-09-17 Thread Fred Yankowski
On Wed, Sep 17, 2003 at 06:25:47PM -0400, Tres Seaver wrote:
 I have wanted to add a binding to the TALES namespace to allow access to
 the skin object for some time:  the current values in the namespace
 are:
 
 'content' -- the skin object's aq_parent

That definition matches the reality, but in CachingPolicyManager.py
in a comment it has this: 

'content' -- the content object itself

which I took at face value for far too long.

 I think we should be adding in another binding, perhaps 'skinned' for
 the skin object, which would allow you to filter on its metatype in your
 predicate.

I would like that.

 I typically want to have skin images, as well as javascript and CSS
 files, cached for much longer than rendered content views. YMMV.

That makes sense.  Is there a way to do that with the CMF 1.4
version of the CPM?  One could, I suppose, test the names of the
FSDV folders in CPM predicates, but that seems a royal PITA.  That's
why I'm making do with one-size-fits-all CPM policy for now.

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Re: [Zope-dev] AW: [Summary] Caching prob with AHCM and headers

2003-09-15 Thread Fred Yankowski
On Mon, Sep 15, 2003 at 01:14:51PM +0100, Chris Withers wrote:
 Fred Yankowski wrote:
 But I can't see how to create more restrictive Predicate.  My initial
 attempt was to set Predicate like so:
 
  python: content.meta_type == 'Filesystem Image'
 
 Do you have any content with this metatype?

There is nothing in the portal_catalog with that meta_type.  But there
are lots of objects with that type:  most everything in
portal_skins/plone_images/, for example.

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Re: [Zope-dev] AW: [Summary] Caching prob with AHCM and headers

2003-09-12 Thread Fred Yankowski
On Fri, Sep 12, 2003 at 10:13:44AM -0400, Tres Seaver wrote:
 The CMF's CachingPolicyManger, which is specialized for caching skin
 methods, already has such customizations:  it allows spelling the
 'Last-Modified' header using a TALES expression, and also has checkboxes
 for the 'no-cache', 'no-store', and 'must-revalidate' options of the
 'Cache-Control' header.

Based on that note I decided to try CachingPolicyManager for the first
time, and I'm confused about how it's supposed to work.

In a CMF/Plone portal instance (CMF 1.4) I created a CMF Caching
Policy Manager object.  If I create a policy instance with default
Predicate and Mod. Time values and a Max age of 999, FSImage objects
are then published with appropriate cache control headers so that they
expire after 999 seconds.  Cool.

But I can't see how to create more restrictive Predicate.  My initial
attempt was to set Predicate like so:

python: content.meta_type == 'Filesystem Image'

But that predicate never seems to return true.  Looking at
_setCacheHeaders() in CMFCore/utils.py, 'content' is set to
'aq_parent(obj)'.  Because of that, any tests against 'content' in the
Predicate apply to the Filesystem Directory View that contains the
particular FSImage objects, rather than to the FSImage object itself.
What good is that?

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Re: [Zope] LoginManager dlpierson example

2001-01-31 Thread Fred Yankowski

I just realized that I responded in terms of a PythonMethod when you
asked about a PythonScript.  My ZClass functions for my LoginManager
subclass are all PythonMethods, yet to be converted to Python
Scripts.  My 'authenticate' method takes (self, password, request) as
parameters and has for the function body only

return password == self.password

I suspect that an equivalent PythonScript will need to take password
and request as parameters (not so sure about 'request') and will have
a body like this:

return password == container.password

Ah, what the heck...  OK, I just converted my authenticate script as
above and it seems to still work fine.

On Wed, Jan 31, 2001 at 07:32:14PM +1300, W. Robert Kellock wrote:
 On passing 'request' (why the extra argument anyway?) I got
 
 Error Type: TypeError
 Error Value: not enough arguments; expected 3, got 2
 
 so I'm wondering have you got LoginManager to work on the Zope 2.3.0 release?

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[Zope] SiteAccess affects the Zope management interface

2001-01-31 Thread Fred Yankowski

I hadn't realized it before, but SiteAccess can cause really confusing
things in the Zope management interface!  When I installed Zope 2.3.0
and ran it on an unused port number to check it out while the main
Zope was still running, the top-level Zope folder displayed with the
new look (which is very well done, BTW), but when I would drill down
into a folder governed by a SiteRoot object the folders appeared with
the old (2.2.x) look.  This was quite a mystery until I realized that
although the tree frame on the left (and the new top frame) were
displaying pages served by the new Zope 2.3.0 process, the
right/folder frame was actually displaying a page served by my
older production Zope process running Zope 2.2.5!

My Zope tree is something like this:

/
+ /subsite1
+ /subsite2

subsite1 has a SiteRoot that gives the folder a new Base of
"http://subsite1.org".  Apache is sitting on port 80 and using
ProxyPass to map http://subsite1.org to
http://myhost.org:8080/subsite1.  Assume the new Zope ZServer is
running on port 9090.  So the listing for 'subsite1' in the tree
display has an HREF of http://myhost.org:9090/subsite1/manage_main.
When I click on that, the browser requests that URL from Zope on
myhost.org:9090.  Because of the SiteRoot object, the server sends
back an HTTP 302 response redirecting the browser to
http://subsite1.org/manage_main, which the browser dutifully requests.
The Apache server gets that request and forwards it via ProxyPass to
http://myhost.org:8080/subsite1/manage_main.  The other/older Zope
server on port 8080 fields that request (with SiteAccess converting
URLs) and sends it back to the browser, which displays it in the
large/right frame.  So now the left frame is displaying the objects
served by ZServer on port 8080 but the right frame is displaying the
contents of some object served by ZServer on port 9090.

One outcome of this for me is that I will now test the staging server
by running it this way (from bash):

SUPPRESS_SITEROOT=1 ./start.bat

so that SiteRoot translations are disabled.

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Re: [Zope] How to get a name of uploaded file

2001-01-31 Thread Fred Yankowski

On Wed, Jan 31, 2001 at 08:26:38PM +0100, Radek Hnilica wrote:
 Is there any way how to get a name of uploaded file.  I mean another than let user 
type the name in another field.

There's a nice example of code for uploading external files in
http://classic.zope.org/pipermail/zope/1999-July/006591.html

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Re: [Zope] LoginManager dlpierson example

2001-01-30 Thread Fred Yankowski

On Wed, Jan 31, 2001 at 09:25:08AM +1300, W. Robert Kellock wrote:
 Are PythonScript arguments typeless?  I keep getting an
 error
 
 Error Type: AttributeError
 Error Value: 'string' object has no attribute 'password'
  
 from the authenticate method which I'm passing self,password.


I think you should pass (self, password, request).


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[Zope] porting from Python Methods to PythonScripts in 2.3.0; LoginManager too

2001-01-29 Thread Fred Yankowski

I just installed Zope 2.3.0 and I'm planning how to port my sites from
2.2.5.  It looks like I'll have to:

+ Copy over the Products I installed, _except_
+ Don't copy over SiteAccess and PythonMethods.
+ Delete the PythonMethods product from the Control_Panel/Products
  management folder. 

Will I have to manually convert each existing Python Method to
a PythonScript, or are they essentially the same type?

I haven't been able to test what happens yet, because all my existing
Python Methods relate to LoginManager and I haven't been able to get
the LoginManager product to initialize correctly in 2.3.0.  I followed
the first two steps above and copied over my data.fs.  It comes up
cleanly except for an exception while loading the LoginManager and
some ZClass problems for ZClasses that depend on LoginManger.  The
exception is this:

--
2001-01-29T16:57:02 ERROR(200) Zope Couldn't import Products.LoginManager
Traceback (innermost last):
  File E:\PROGRA~1\Zope230\lib\python\OFS\Application.py, line 530, in
  import_products
(Object: string)
  File E:\PROGRA~1\Zope225\lib\python\Products\LoginManager\__init__.py, line 1, in ?
  File E:\PROGRA~1\Zope225\lib\python\Products\LoginManager\LoginManager.py, line 121, 
in ?
InstallError: No access file found at E:\Program Files\Zope230 - see INSTALL.txt
--

Can someone help me understand this?  The two INSTALL.txt files under
Zope230 offer no clues.  It's odd that the exception stack shows it
executing code from my older Zope225 installation.  How the heck can
that happen?  Is that some bug in Python?  There's nothing in my
environment that mentions Zope225, and I dumped sys.path late in z2.py
and it looks fine.

I tried deleting the LoginManager product from the management
interface and restarting, but the same exception occurs.

I do notice that, unlike prior Zope installs, there is no 'access'
file in the Zope root.

Oops, I just saw another message about LoginManager not yet working in
Zope 2.3.  If that's so, it's a show-stopper for me.

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Re: [Zope] porting from Python Methods to PythonScripts in 2.3.0; LoginManager too

2001-01-29 Thread Fred Yankowski

After browsing the Zope-dev list (I guess that's _yet another_ list I
need to follow) I found a note about creating the 'access' file
manually with zpasswd.py.  After doing that, LoginManager seems to
come up cleanly in Zope 2.3.0.

And now I can see that my Python Methods come in broken, apparently
because they depend on the PythonMethods product that I didn't carry
over.  So I guess I'll have to have to install PythonMethods and port
over those methods manually to Python Scripts.  Rats.  I'm just glad I
didn't have too much invested into PythonMethods.

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[Zope] Python Methods can't construct literal dictionaries?

2001-01-28 Thread Fred Yankowski

I'm trying to create a Python Method, using PythonMethod 0-1-7, that
validates a set of form values before updating a database.  I planned
to return any/all errors as a dictionary keyed by the errant field
name.  But statements like this in my Python Method

input_errors = {}
input_errors['password'] = "password must not be empty"
...
return input_errors

result in the following error when I try to save the change to the code:

Error Type: Python Method Error
Error Value: Forbidden operation STORE_SUBSCR at line 3

What's up with that?  I can't create dictionaries in Python Methods?
I must be missing something.  Is there some way around this?

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Re: [Zope] Did I miss some major change in Z SQL Methods ?

2001-01-28 Thread Fred Yankowski

I missed the original message, but I'm trying to do something similar
-- use Python Methods rather than DTML -- and I found one critical
difference just today.  Here's an example:

I've got an SQL Method called 'select_item' that takes 'item_id' as
its only input parameter.

I've got a DTML Method 'form_action' that has 'item_id' in its
namespace by virtue of being posted from an HTTP form.

When I would invoke the SQL method from DTML I could do just
dtml-call select_item
and the SQL method would get the item_id from the DTML method.

But when using a new 'action_script' Python Method (PythonMethod
0.1.7) I have to pass that item_id explicitly from the DTML
   dtml-call "action_script(item_id)"
and action_script itself has to call the SQL method like so
   self.select_item(item_id=item_id)

I don't know why the explicit parameter passing is needed in the
latter case (DTML to Python Method to SQL Method) but not in the
former (DTML to SQL Method).  I'm sure I'm missing some trick.

In fact, this aspect of Zope -- when values are passed explicitly and
when not -- is a major confusion for me.  (And anyone who responds
about "Zen" deserves to have the size 12 boot applied.)


On Mon, Jan 29, 2001 at 09:28:17AM +1100, Curtis Maloney wrote:
 The SQL Method works fine.  I can easily test that with the 'Test' tab.  
 Really, the only difference now to how I would have previously done this is 
 that I have the python method slicing the result for me.
 
 That being said, I have tried removing that, and going to the Z SQL method 
 directly, and it STILL doesn't work.

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Re: [Zope] LoginManager, can't get past login form

2001-01-26 Thread Fred Yankowski

Nick,

Thank you!  Installing the latest ZPatterns did the trick, exactly as
you said.  EXcellent.

But I still wish I had some way to test the pieces of the application,
or to at least trace their operation.  ZPatterns is a bit too opaque
for my taste, particularly given its complexity, unfamiliarity and
immaturity (in the sense of being new and not fully developed).

On Fri, Jan 26, 2001 at 06:12:52PM +1300, Nick McDowell wrote:
 I encountered the same problem.  I soon realized that the ZPatterns that is
 packaged with LoginManger is a version different to the one Dan Pierson
 mentions in his article.

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[Zope] SQL-based LoginManager and subtransactions

2001-01-26 Thread Fred Yankowski

I haven't been following this discussion, but it sounds like there's
the potential for SQL operations performed by LoginManager to
interfere with other SQL operations such as logging uploaded files, in
the case where the database system does not support nested (sub-)
transactions.  Correct?  If so, would it help to create a separate
database access object, and therefore separate connection (I think),
just for the use of LoginManager?  Or could this cause some deadlock
between the LoginManager and other connections?  I'm quite interested
in potential problems here as I plan to use PostgreSQL with
LoginManager on my sites.

On Fri, Jan 26, 2001 at 06:23:57PM +0100, Oliver Bleutgen wrote:
 As we use Loginmanager with postgres, I have know idea how to not
 invoke Z SQL methods when upload.  Has anybody an idea if and under
 what circumstances the above snipped could do harm?

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Re: [Zope] Acquisition Algebra; interaction of containment and acquisition is confusing

2001-01-26 Thread Fred Yankowski

Thank you for describing the transformation rules in detail.  With those
I can mechanically create the same acquisition expression that you get. 
Working some further examples with this knowledge [and how can I use
this knowledge to make mo' money?], I find that given a containment tree
like this:

  a -- b -- c
   \-- x -- y

the access path a.b.c.x.y results in a search order of (y, x, a, b, c)

Evan Simpson wrote:
 Trying to control or predict the exact search order for any but
 the simplest acquisition trees is a dangerous game.  You can read it off
 directly from the algebra form, as in (((x o a) o (b o a)) o (c o (b o a)))
 = x, a, b, c (ignoring duplicates), but it's unlikely to be useful, as you
 saw.

Now, does that bother anyone besides me?  Since acquisition is intrinsic
and ubiquitous in Zope, shouldn't we be concerned that it is hard to
control or predict?

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[Zope] Acquisition Algebra; interaction of containment and acquisition is confusing

2001-01-25 Thread Fred Yankowski

Can anyone help me understand what's going on in the last example of
the main "Acquisition" document,
http://www.digicool.com/releases/ExtensionClass/Acquisition.html?
I think I understand how the various "complex expressions" relate to
the equivalent expression in terms of the '__of__' operator, except
for the very last case, "a.b.c.x".  I just can't follow why the
equivalent expression isn't

x.__of__(a).__of__(c.__of__(b.__of__(a)))

rather than the more complex answer given:

x.__of__(a).__of__(b.__of__(a)).__of__(c.__of__(b.__of__(a)))

When I run the test cases given in the document I see that the latter
does match the behavior, but I find that baffling.  In particular, why
is the effective search order x-a-b-c rather than x-a-c-b?  It almost
looks like the effective search order could be described as "up
through the containment heirarchy, then down through the remaining
acquired path", but I'm not at all sure if that's a valid
generalization.

Can anyone shed some light on this for me?

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Re: [Zope] SQL delimiter?

2001-01-17 Thread Fred Yankowski

On Wed, Jan 17, 2001 at 04:36:29PM -0800, Andy McKay wrote:
 Ive looked through the docs and Im sure I saw once (but cant see it now),
 some sort of delimiter between SQL statements allowing me to put multiple
 SQL statements in one SQLMethod. Was I imagining that?

It's dtml-var sql_delimiter.

I just needed that yesterday, and I found it on p 28 of my printed
(from PDF) copy of the Z SQL Methods User's Guide, in the "Query
Templates" section (huh?).

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Re: [Zope] broken products not indicated after Zope 2.2.5 install

2001-01-10 Thread Fred Yankowski

I activated Zope logging as you suggested and restarted Zope, but the
logfile does not report any exceptions.  It only contains routine
startup messages such as "ZServer HTTP server started ...".

And the Products list still makes it look like they're all OK, when
many are in fact broken by virtue of being completely missing in the
lib/python/Products directory.

On Wed, Jan 10, 2001 at 07:53:02PM +0100, Dieter Maurer wrote:
 Fred Yankowski writes:
   I just installed a full copy of Zope 2.2.5 onto my NT 4.0 SP 6 machine
   and then copied over my data.fs* files from Zope 2.2.3.  Zope 2.2.5
   comes up OK after that, but none of the Products in the Control Panel
   / Products folder is shown as broken, even though I have yet to copy
   over the dozen or so products that I had added onto Zope 2.2.3.  Of
   course, other objects that depend on those products fail and some of
   those do display a "broken" icon and state.  But why don't the
   incomplete products themselves get flagged as broken?
 This may be part of a (small) Zope misfeature.
 
 If exceptions occur during some part of product registration,
 then Zope appears not to update the product state.
 
 I suggest, you activate Zope's logging mechanism
 (either through an environment variable
 "STUPID_LOG_FILE=file" or with an equivalent command line
 argument to "start"). Then restart Zope and look at the log
 file.
 If you see exceptions there, file a bug report into the Collector.

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Re: [Zope] Stupid File Upload Question

2000-12-16 Thread Fred Yankowski

On Fri, Dec 15, 2000 at 07:22:43PM -0500, [EMAIL PROTECTED] wrote:
 Anyway, be absolutly sure that your form says:
 
 form method=post action=whatever method="multipart/form-data"

Of course, that should be ENCTYPE instead of the second METHOD
attribute name: 

  form method=post action=whatever enctype="multipart/form-data"

As an aside, I found the following page to be a useful example of Zope
file-upload handling:
http://classic.zope.org/pipermail/zope/1999-July/006591.html

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Re: [Zope] Re:GoLive (or, redirecting to index.html)

2000-11-02 Thread Fred Yankowski

On Wed, Nov 01, 2000 at 03:10:57PM -0700, Bill Anderson wrote:
 dtml-var "_['index.html']"

I tried that too, but it also had problems.  That format would load
the index.html file OK, but most of the links within the page would be
wrong in the case where the page is accessed via a URL like
http://fqdn.com/subsite (note, no final "/").  The javascript code
in index.html (generated by the Web Studio tool) generates an HTML
BASE element with the HREF attribute set to the concatenation of the
window.location (or window.location.href) value with "subsite",
resulting in an HREF value of "http://fqdn.comsubsite" in this case.
SNAFU. 

This problem stems from the quirky code generated by Web Studio, but
it forced me to access the page via a redirect rather than
incorporating it directly via dtml-var.

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Re: [Zope] Re:GoLive

2000-11-01 Thread Fred Yankowski

On Wed, Nov 01, 2000 at 03:32:07PM +, tom smith wrote:
 Anyone know if GoLive 5 with WebDav can edit dtml files...or Dreamweaver?

With Dreamweaver 2.0 I can use File - Open to open and edit a file
with a name like "index_html", but when I define a Dreamweaver "site"
that encompasses files like "index_html" then Dreamweaver refuses to
open such files, putting up an alert that says "The file 'index_html'
could not be opened because Dreamweaver does not open files without an
extension'.  This is a major PITA.  Perhaps there is some
configuration parameter that would allow this, but I haven't found
it.  Maybe newer versions of Dreamweaver are more accomodating?

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Re: [Zope] Re:GoLive

2000-11-01 Thread Fred Yankowski

On Wed, Nov 01, 2000 at 08:31:09AM -0600, Christopher J. Kucera wrote:
 That should be pretty easy . . .  Zope will let you add objects that
 have dots in the titles, so just put a method "index_html" in the
 root folder which has the following line:
 
   dtml-var index.html

That obvious solution fails in some cases.  It failed for me the very
first time I needed it, when I tried to integrate web pages created by
the Web Studio tool into a larger Zope website.  Web Studio (ack,
phooey) creates a main index.html that uses Javascript to redirect to
another page that acts as the real entry point.  That Javascript code
gets confused when loaded via dtml-var index.html as above.  I
resorted to doing the following instead:

 dtml-call "RESPONSE.redirect(URL1 + '/index.html')"

So now it takes two redirects to get to the real page, darn it.  The
above _could_ redirect straight to the real entry page, but exact
knowledge of which page that is belongs to the subsite, not in my
code.  And it turns out that the subsite _has_ changed its entry page
since I set up the above code.

With Zope, simple things are easy, but slightly complex things tend to
be hard.   It's a weird learning/technology curve and I sure hope it
flattens out soon...
I've done a lot of website programming in PHP, Java, Perl, and
AOLserver/Tcl  -- none of those seem to have Zope's complexity at the
point of creating simple database-backed websites.  Zope doesn't even
have a decent self-registering user login system out of beta yet.
Sheesh.

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[Zope] incorporating generated sub-websites within a Zope site

2000-10-30 Thread Fred Yankowski

I'm looking for suggestions about how to manage a Zope website that
hosts some subsites created by tools outside of Zope.  Here's the
situation. 

I'm working on a community website (batavians.org) for a small city
(Batavia, IL) where I want to allow various non-profit community
organizations to manage their own subsites.  But the very first test
case is proving to be a problem because the manager of the subsite is
using web page development tools that seem to make it hard to
integrate their subsite with the rest of the site.  They can FTP their
files up to the Zope server (which I configured to use port 21 for
FTP) and their work is accessible just fine given a small "glue"
index_html object that bridges to their internal main page.  But I got
blocked when I tried to add a standard page footer onto their pages.
Actually, I was able to add a dtml-var element to pull in a standard
footer via acquisition and that works, but the manager of the
sub-website has no way to pull that change back to her working version
of the subsite.  It seems that the lightweight "Web Studio 2.0" tool
she's using has no FTP-download function at all.  Not only that, it
has no way to view/edit HTML at all!  It's only possible to edit using
a WYSIWYG design view (AFAICT).  So she can't merge in the change even
if I tell her exactly the HTML code to add.

OK, this problem is largely the result of the crappy web-design tool
she's using, but I really have no control over that.  The subsite
manage/author doesn't know HTML and would be completely helpless with
Zope's "through the web" editing interface.  A better tool such as
Dreamweaver would at least allow her to download files and/or edit
HTML directly, but that's moot in this case.  Even with Dreamweaver I
think the DTML tags would be invisible and hard for a non-programmer
to deal with.  (Not only that, Dreamweaver refuses to open files that
don't have an extension, so it won't open index_html for example.)

So what alternatives do I have?  Is there some way that I can set up a
filter such that every page of her subsite goes through the filter
before being sent out to the browser, allowing me to tack on a page
footer on those pages?  I'm sure Zope has such a mechanism, but I
don't know where to look.  Even with such a filter I'm not keen about
having to parse her pages (which are/should-be each a complete HTML
document) in order to insert a footer line in the right place.  What
other schemes should I consider?

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Re: [Zope] Help Debugging External Methods

2000-10-18 Thread Fred Yankowski

On Tue, Oct 17, 2000 at 09:05:29PM -0700, Kapil Thangavelu wrote:
 The Debugger is your friend
 http://www.zope.org/Members/michel/HowTos/TheDebuggerIsYourFriend

That's a useful page -- thanks for the link.

It's interesting that the example fooMethod() function has a major
flaw, contrary to what the HowTo says: "There's actually nothing wrong
with this method to debug".

I would have replied directly to the author, 'michel', but his email
address does not appear on that HowTo page or any of the pages that I
scanned under http://www.zope.org/Members/michel.

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[Zope] how to include Flash/SWF objects in Zope website?

2000-10-16 Thread Fred Yankowski

I want to include some Flash/SWF objects in a Zope website, but I
don't see any built-in way to do this or any Product that would help.
Any suggestions?

If all else fails, I'm thinking about creating a simple product for
this, modeled on ImageFile.py.

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Re: [Zope] how to include Flash/SWF objects in Zope website?

2000-10-16 Thread Fred Yankowski

Thank you both for the help.  File objects are just the ticket (but it
turns out that Image objects work nearly as well).  For the record,
here's what I did:

 + create File object with id "foo_swf".
 + upload my local foo.swf file into foo_swf.
 + create DTML Method object "foo_flash" to provide all the HTML
   OBJECT and EMBED elements needed to wrap the flash object,
   referring to that flash object as 'PARAM NAME=movie VALUE="foo_swf"'
   and 'src="foo_swf"', respectively.
 + use 'dtml-var foo_flash' to display the flash object in a DTML
Document.


On Mon, Oct 16, 2000 at 02:10:03PM -0400, Jim Washington wrote:
 N.B. You probably should add your Flash/SWF objects as "File" objects. 
 DTML Method/Document objects can do amusing things with binary data, 
 which is why there are "File" objects.
 
 -- Jim Washington
 
 J. Atwood wrote:
 
  You could just upload them into Zope and point to them.
  
  http://www.gotschool.com (see flash demos).
  
  It uploads as a "application/octet-stream"
  
  I am sure you are talking about much more interaction.
  
  J

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Re: [Zope] Using ProxyPass and SiteRoot

2000-10-12 Thread Fred Yankowski

It looks to me like you'd need the following in Apache's httpd.conf:

NameVirtualHost 206.131.108.102

VirtualHost 206.131.108.102
ServerName www.isd197.k12.mn.us
ProxyPass / http://206.131.108.103:8080/
ProxyPassReverse / http://206.131.108.103:8080/
/VirtualHost

and the following settings in a SiteRoot object at the root of the Zope
tree for the site: 

base:   http://www.isd197.k12.mn.us
path:   /

Timothy Wilson wrote:
 I've been developing a new Zope site on a separate machine at
 http://206.131.108.103:8080/ using just ZServer and I would like to use
 ProxyPass to pass a request for www.isd197.k12.mn.us through to this new
 site.

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Re: [Zope] Black Magic

2000-10-10 Thread Fred Yankowski

Evan,

The information you just provided about the DTML Method "call
signature" and the like is very useful.  Is this kind of reference
material written down somewhere in a guide/how-to/wiki/...?

I tried to figure out the call signature of a Python method by having
the called function use just "(*varargs, **kwargs)" as formal
parameters, but the inscrutable mapply() function seems to thwart that
effort as mapply() adjusts the function call according to what
parameters the called function (or callable object, ...) expects.
Very weird.  Is there some document that covers the how and why of
mapply()? 

On Tue, Oct 10, 2000 at 11:17:13AM -0400, Evan Simpson wrote:
 1. DTML Methods' __call__ signature is (client=None, REQUEST={},
 RESPONSE=None, **kw).  The client, REQUEST, and keyword arguments
 are layered to form the namespace for the Method, with the keywords
 on top, then the client, then REQUEST.  ...

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[Zope] one external method calling another; what possibilities?

2000-10-06 Thread Fred Yankowski

I'm using some example code that defines an External Method to process
a form.  That External Method calls another utility function to log
some data.  I'm not quite sure what choices I have for creating that
utility function, so I created another External Method for it.  Both
functions are in the same Python source file in the Extensions folder.

Anyway, the main external function calls the utility function like this:

self.function2(arg1=valuex, arg2=valuey)

I expected that function2 would have to be defined like this:

def function2(self, **kwargs)

but it turned out that that fails at runtime with a complaint about a
mismatch between the number of arguments sent and expected (0 and 1,
respectively).  The following does work:

def function2(**kwargs)

So, why isn't function2 called as a method function?

Was there some better way I could have implemented function2, rather
than as an external method?

Where is reference documentation on External Methods?  I couldn't find
anything other than a very cursory overview in one of the PDF'ed
documents (I forget which).

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[Zope] why does squishdot url_quote email address values?

2000-10-03 Thread Fred Yankowski

Version 0-7-2 of Squishdot seems to use the url_quote option when
accessing the value of admin_address in particular, so when a DTML
page has code like

 !--#var admin_address url_quote--

and admin_address is a property with the value "[EMAIL PROTECTED]", the
resulting HTML code is

 foo%40bar.com

which doesn't work correctly, particularly when used as the value of a
'mailto:' URL.

So what's the solution?  Is Squishdot wrong to use url_quote this way?
Why is url_quote hiding the "@" anyway -- I don't see any reason for
escaping it this way.

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[Zope] trouble with SiteAccess; can't manage subtree mapped to inaccessible domain name

2000-09-23 Thread Fred Yankowski

I set up SiteAccess 2-0-0b3 on Zope 2.2.2 so that two virtual hosts
front-ended by Apache map to two different subtrees in Zope.  That
worked OK until the local DNS server lost the entry for one of my
domains.  I'm working on fixing that (it's out of my hands) but I find
that in the meantime I can't even get to the corresponding Zope
subtree in manage mode!  I think the SiteAccess object I created is
still mapping URLs to the domain name which now fails to resolve.

How do I get out of this jam?  I tried deleting the
Products/SiteAccess folder, restarting Zope, and deleting the
SiteAccess product from the Control_Panel/Products view, but now I'm
getting an AttributeError when I try to access the subtree that has a
SiteAccess object.  Since I can't get to that tree, I can't figure out
how to delete that object.  Is there some way to delete it by name
from a higher point in the tree?

-- 
Fred Yankowski   [EMAIL PROTECTED]  tel: +1.630.879.1312
Principal Consultant www.OntoSys.com   fax: +1.630.879.1370
OntoSys, Inc 38W242 Deerpath Rd, Batavia, IL 60510, USA

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