[Zope] external methods, returning objects...argh!

[andres@corrada.com]

So, have you tried proxying the dtml object as manager to see if the
authorization problem goes away?

On Tue, Jun 05, 2001 at 04:32:56PM +0200, Gerrie Roos wrote:
> This is the setup:
> 
> **childLookup  (python method):**
> 
> branches = context.childBranchesLookup(BranchParent = parentBranch)
> tags = context.childTagsLookup(BranchName = parentBranch)
> #these above are ZSQL results...
> 
> result = context.createNodeObj(branchResult = branches, tagResult =
> tags)
> 
> return result
> 
> 
> **createNodeObj (external method, calling createNodeObj):**
> 
> class _dummy:
>     def __init__(self, name):
>         self.name=name
> 
> def createNodeObj(branchResult, tagResult):
>     c = []
>     for branch in branchResult.dictionaries():
>         c.append(_dummy(branch["BranchName"]))
>     for tag in tagResult.dictionaries():
>         c.append(_dummy(tag["CVSTagNo"]))
>     return c
> 
> 
> So the idea is to call childLookup, which passes ZSQL results on to
> createNodeObj, and createNodeObj generates a list of objects and returns
> it.  I know, I know I could've done it with an external method only...I
> only learnt that too late.  Now I can't work with the resulting list of
> objects in Zope!
> 
> for instance:
> 
> <dtml-in expr="childLookup(parentBranch = 'Main')">
>     <dtml-var name>
> </dtml-in>
> 
> results in:
> 
> 'Authorization failed. Retry? '  popup in my browser.  Then cancelling I
> get the following trace:
> 
> Zope Error
> 
>    Zope has encountered an error while publishing this resource.
> 
>    Unauthorized
> 
>    Sorry, a Zope error occurred.
> 
>    Traceback (innermost last):
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/ZPublisher/Publish.py, line
> 222, in publish_module
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/ZPublisher/Publish.py, line
> 187, in publish
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/ZPublisher/Publish.py, line
> 171, in publish
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/ZPublisher/mapply.py, line
> 160, in mapply
>        (Object: test_index_html)
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/ZPublisher/Publish.py, line
> 112, in call_object
>        (Object: test_index_html)
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/OFS/DTMLDocument.py, line
> 189, in __call__
>        (Object: test_index_html)
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/DocumentTemplate/DT_String.py,
> line 538, in __call__
>        (Object: test_index_html)
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/DocumentTemplate/DT_In.py,
> line 711, in renderwob
>        (Object: childLookup(parentBranch = 'Main'))
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/OFS/DTMLMethod.py, line
> 261, in validate
>        (Object: test_index_html)
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/AccessControl/SecurityManager.py,
> line 144, in validate
>      File
> /usr2/GnatsPkg/src/Zope-2.3.0-src/lib/python/AccessControl/ZopeSecurityPolicy.py,
> line 168, in validate
>    Unauthorized: name
> 
> So can't I return a list of objects from an external method?
> 
> How will one then get the example of dtml-tree with external methods
> shown in
> http://www.zope.org/Members/anthony/tree-coding-tricks
> to work?
> 
> Thanks!
> 
> 
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-- 
------------------------------------------------------
Andres Corrada-Emmanuel   Email: andres@corrada.com
Internet Programming      http://www.mamey.com
------------------------------------------------------