Hi, I'm a Zope beginner. I'm trying to create an ImageTemplate ZClass. This will work similar to an Image, but the user can insert it directly in DTML using <dtml-var MyImage> and it will get expanded into HTML (with formatting, <img> tag, caption, etc.) This may be long and complicated, but I thought that #4 below was interesting because it demonstrates how to get at base class methods even if you have overridden them. OK, here's the situation: 1. I created a ZClass derived from Image. 2. I overloaded the index_html to add spit out some HTML instead of the image. 3. If I call an instance of the ZClass directly I get the expected results. The index_html is called and I get back some HTML. Here: http://63.199.26.229:8080/c/gato 4. To get to the image I created an External Method that calls the index_html method of the my base class (Image): # I create an External Method called IMG that calls this Python method: def super_index_html (self): for classy in self.__class__.__bases__: if classy.__name__ == 'Image': return classy.index_html (self, self.REQUEST,\ self.REQUEST.RESPONSE) Example: http://63.199.26.229:8080/c/gato/IMG So far, so good! Now all I want to do is insert my ZClass in some DTML. Here's what happens: 1. I try to insert in instance of my ZClass into a DTML Method using: <dtml-var gato> 2. The Publisher does not call the view method (index_html) of the object! Instead it calls str() which is __str__ in Image and that calls Image.tag(). I can't overload __str__ because Zope does not allow a method to start with _ underscore. I ran this in the debugger, Publish.publish() (line 173) has this code: if result is not response: response.setBody(result) This is where the trouble begins. setBody() calls str() function on the object. How do I insert my ZClass into DTML now? Yours, Noah