I have a custom addform that works fine with a standard configuration. However, on submission it redirects to the contents view of its container and I want it to redirect somewhere else, such as the new object's edit or metadata views. All I really need is a nextURL configuration directive, mentioned in mailings some time ago, but I don't think that has been implemented.

I have created a class with a __call__ method that returns the custom form template, and a nextURL() method. In the configuration file I have replaced the content_factory directive with the class directive.

With the custom form and class, the form displays and field validation still works, but with valid fields I get an object creation error:

File "/usr/local/Zope3/src/zope/app/form/browser/add.py", line 71, in create
    return self._factory(*args, **kw)
TypeError: 'NoneType' object is not callable

I have looked at the add.py module and am none the wiser. I guess I have neglected to set something somewhere, may be context related. Can anyone enlighten me? The custom class has almost nothing in it (see below) so I am surprised it gets as far as it does. [I have also searched the archives and read both recent Zope3 books but can't find an answer.]


Custom class:

from zope.app.pagetemplate.viewpagetemplatefile import ViewPageTemplateFile

class PageAddFormD:
    """This class reads the form data and creates a custom Page"""

    template = ViewPageTemplateFile('pageaddformd.pt')

    def __call__(self):
        return self.template()

    def getInterfaces(self):
        """ Don't know if I need this here """
        return implementedBy(GlgPage)

    def nextURL(self):
        """ return the next place to go """
        # have not got this far yet
        return '../'
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