[Zope] classes in external methods

[Max M]

nwingfield at dixon-hughes.com wrote:

> Since Zope's Python Scripts will not allow me to import the csv module, I
> wrote my own little class within an External Method.  My class opens a CSV
> file and returns a dictionary representation of each line, one at a time.
> Now Zope pops up an authentication dialog when I try to call my External
> Method.  Is there some way around this?  Can someone also explain why Zope
> does this?  I thought an External Methods was a failsafe way to write
> unrestricted Zope code without going all out and writing a product (which
> just doesn't make sense in this instance).
> Nathaniel


It is.

But the object you return is probably not a simple Python data type.

As far as I remember the csv module returns some kind of iterator, (a 
Reader object?) not just a list of dictionaries.

Such a class can not be accessed by dtml/zpt. It is protected by the 
security machinery.

This means that you either need to set::

     obj.__allow_access_to_unprotected_subobjects__=1

On the reader object that is returned.

Or you could convert it to a real list of dictionaries and return that. 
Which is the most correct way to do it.

Such simple types are not protected by Zope.


regards Max M


-- 

hilsen/regards Max M, Denmark

http://www.mxm.dk/
IT's Mad Science