wizard.py 文件源码

def get_step_form(self, step=None):
        if step is None:
            step = self.steps.current
        attrs = self.get_form_list()[step]
        if type(attrs) in (list, tuple):
            return modelform_factory(self.model, form=forms.ModelForm,
                                     fields=attrs, formfield_callback=self.admin_view.formfield_for_dbfield)
        elif type(attrs) is dict:
            if attrs.get('fields', None):
                return modelform_factory(self.model, form=forms.ModelForm,
                                         fields=attrs['fields'], formfield_callback=self.admin_view.formfield_for_dbfield)
            if attrs.get('callback', None):
                callback = attrs['callback']
                if callable(callback):
                    return callback(self)
                elif hasattr(self.admin_view, str(callback)):
                    return getattr(self.admin_view, str(callback))(self)
        elif issubclass(attrs, forms.BaseForm):
            return attrs
        return None