Python django.forms.models 模块，ModelForm() 实例源码

def get_form(self, request, obj=None, **kwargs):
        form = super(_BaseAdmin, self).get_form(request, obj, **kwargs)

        def clean(form):
            super(ModelForm, form).clean()
            self.clean_form(request, form)

        form.clean = clean
        return form

def get_model(self):
        if self.model:
            return self.model
        if issubclass(self.form, ModelForm):
            model = self.form._meta.model
            if model:
                return model
        raise ImproperlyConfigured(u"Please set entry 'model' attribute or use "
                                   u"ModelForm subclass as a form")

def setUpClass(cls):
        super(WizardTestMixin, cls).setUpClass()
        # This prevents auto-discovery, which would otherwise occur as soon as
        # tests start, creating unexpected starting conditions.
        wizard_pool._discovered = True

        class PageWizard(Wizard):
            pass

        # This is a basic Wizard
        cls.page_wizard = PageWizard(
            title=_(u"Page"),
            weight=100,
            form=WizardForm,
            model=Page,
            template_name='my_template.html',  # This doesn't exist anywhere
        )

        class SettingsWizard(Wizard):
            pass

        # This is a Wizard that uses a ModelForm to define the model
        cls.user_settings_wizard = SettingsWizard(
            title=_(u"UserSettings"),
            weight=200,
            form=ModelWizardForm,
        )

        class TitleWizard(Wizard):
            pass

        # This is a bad wizard definition as it neither defines a model, nor
        # uses a ModelForm that has model defined in Meta
        cls.title_wizard = TitleWizard(
            title=_(u"Page"),
            weight=100,
            form=BadModelForm,
            template_name='my_template.html',  # This doesn't exist anywhere
        )