Dexterity example: override nextURL

dx-overrire-nexturl.py

class BaseEditForm(DefaultEditForm):

    def nextURL(self):
        ''' Try to guess in a smart way what will bethe next url
        '''
        next_url = super(BaseEditForm, self).nextURL()
        current_tab = getattr(self, 'tab_id', '')
        if not current_tab:
            return next_url
        if not current_tab in self.wizard_tabs:
            return next_url
        current_index = self.wizard_tabs.index(current_tab)
        if getattr(self.context, '%s_compiled' % current_tab, False):
            #project is already compiled, and we return to the view
            return next_url
        if current_index == len(self.wizard_tabs) - 1:
            return next_url
        return "%s/@@%s" % (
            self.context.absolute_url(),
            self.wizard_tabs[current_index + 1]
        )