[Zope] Translator/render() strangeness

[Cees de Groot]

I just tried to use Translator in 2.3.1 for the first time. It behaves strange 
when I use <dtml-lvar some_image>, and it seems to hinge on something in 
DT_Util.render():

def render(self, v):
    "Render an object in the way done by the 'name' attribute"
    if hasattr(v, '__render_with_namespace__'):
        v = v.__render_with_namespace__(self)
    else:
        vbase = getattr(v, 'aq_base', v)
        if callable(vbase):
            if getattr(vbase, 'isDocTemp', 0):
                v = v(None, self)
            else:
                v = v()
    return v                             

When I use <dtml-lvar some_image>, the image is eventually passed to render() 
by Translator/LocalizeTag. Some print statements reveal in this case:

 type(v) =  <extension class Acquisition.ImplicitAcquirerWrapper at 40201e60>
 callable(v) =  1
 type(vbase) =  <extension class OFS.Image.Image at 85acac0>
 callable(vbase) =  1

So render calls the line "v = v()". Result:

  Traceback (most recent call last):
    File "/net/fs-1/bigdisk/opt/zope/current/lib/python/Products/Translator/Loc
alizeTag.py", line 102, in render
      return str(render(md, v))
    File "/net/fs-1/bigdisk/opt/zope/current/lib/python/DocumentTemplate/DT_Uti
l.py", line 282, in render
      v = v()
  AttributeError: __call__

So v is callable, but v() returns this attribute error? 

(I've wrapped the v=v() inside a try:except: and it now works again...)


-- 
Cees de Groot               http://www.cdegroot.com     <cg@cdegroot.com>
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