[Re: [Zope] Problem with passing objects from External Methods]

[Chris McDonough]

Hi Jason,

Is there a traceback associated with the error?  (If it's not
immediately evident, view the page source).


Jason Joy wrote:
> 
> Chris,
> 
> I thank you for all your help with this frustrating issue.  All your changes
> have pointed me in the right direction, but I am facing one other issue with
> it that I was wondering if you could shed some light on.
> 
> The <dtml-var foo> within the <dtml-in passthis(bar)> is raising an
> interesting error of:
> 
> Error Type: TypeError
> Error Value: call of non-function (type string)
> 
> Removing the <dtml-var foo> does not bring up this error, of course.  Is there
> something that I am missing?
> 
> Jason
> 
> Chris McDonough <chrism@digicool.com> wrote:
> Hi Jason,
> 
> This is a stumper.  But there's a solution.  Rewrite your external
> method to look like this:
> 
> import string, regex
> from AccessControl import ClassSecurityInfo
> from Acquisition import Implicit
> import Globals
> 
> class element(Implicit):
>    security = ClassSecurityInfo()
>    security.declareObjectPublic()
>    security.setDefaultAccess('allow')
> 
> def passthis(passed):
>     info = []
>     structures = string.split(passed)
>     for structure in structures:
>        bit = element()
>        bit.data = foo
>        bit.source = structure
>        info.append(bit)
>     return(info)
> 
> Globals.InitializeClass(element)
> 
> For more info on why this is necessary, see
> http://dev.zope.org/Wikis/DevSite/Projects/DeclarativeSecurity/ZopeSecurityForDevelopers
> 
> HTH,
> 
> - C
> 
> > def passthis(passed):
> >    class element:
> >       pass
> >    info = []
> >    structures = string.split(passed)
> >    for structure in structures:
> >       bit = element()
> >       ## Get Information here, and store it in foo.
> >       bit.data = foo
> >       bit.source = structure
> >       info.append(bit)
> >    return(info)
> >
> > ---
> 
> Jason Joy wrote:
> >
> > This one has been driving me a bit crazy and I think there is a simple
> > solution to this.  I have written an external method to return a list of
> > objects back to a DTML method which executes the code via a dtml-in.
> >
> > The dtml code looks like:
> >
> > <dtml-in processMethod(passthis)>
> > <dtml-var sequence-index><dtml-var data><BR>
> > </dtml-in>
> >
> > And this is passthis.py:
> >
> > import string, regex
> >
> > def passthis(passed):
> >    class element:
> >       pass
> >    info = []
> >    structures = string.split(passed)
> >    for structure in structures:
> >       bit = element()
> >       ## Get Information here, and store it in foo.
> >       bit.data = foo
> >       bit.source = structure
> >       info.append(bit)
> >    return(info)
> >
> > ---
> >
> > When I run the code, I get a box that asks me to revalidate my Zope login
> and
> > nothing works, finally, the system gives up and gives me an error with this
> at
> > the bottom:
> >
> > File /usr/local/Zope-2.3.0/lib/python/AccessControl/ZopeSecurityPolicy.py,
> > line 168, in validate
> > Unauthorized: data
> >
> > Does anyone have any advice on this one?  This is an example of what I am
> > doing and I need to pass a list of objects (with about 10 properties on
> each)
> > to be run through a dtml-in.
> >
> > Thanks,
> >
> > Jason
> >
> > ____________________________________________________________________
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