[Zope-CMF] isinstance on ActionProviderBase

[Dieter Maurer]

Nicolas Romero wrote at 2003-9-30 12:09 +0200:
 > I am developping a product and I have a problem using isinstance on
 > ActionProviderBase objects. Here is an excerpt of my code :
 > ...
 >        if isinstance( obj, ActionProviderBase):
 > Let obj be a CMF tool...

Be aware, that Zope objects usually do *not* have the type you
expect. Instead, they are usually acquisition wrappers.

Always use "aq_base(obj)" in "isinstance" checks...


Dieter