models.py 文件源码

def modelformset_factory(model, form=ModelForm, formfield_callback=None,
                         formset=BaseModelFormSet, extra=1, can_delete=False,
                         can_order=False, max_num=None, fields=None, exclude=None,
                         widgets=None, validate_max=False, localized_fields=None,
                         labels=None, help_texts=None, error_messages=None,
                         min_num=None, validate_min=False, field_classes=None):
    """
    Returns a FormSet class for the given Django model class.
    """
    meta = getattr(form, 'Meta', None)
    if meta is None:
        meta = type(str('Meta'), (object,), {})
    if (getattr(meta, 'fields', fields) is None and
            getattr(meta, 'exclude', exclude) is None):
        raise ImproperlyConfigured(
            "Calling modelformset_factory without defining 'fields' or "
            "'exclude' explicitly is prohibited."
        )

    form = modelform_factory(model, form=form, fields=fields, exclude=exclude,
                             formfield_callback=formfield_callback,
                             widgets=widgets, localized_fields=localized_fields,
                             labels=labels, help_texts=help_texts,
                             error_messages=error_messages, field_classes=field_classes)
    FormSet = formset_factory(form, formset, extra=extra, min_num=min_num, max_num=max_num,
                              can_order=can_order, can_delete=can_delete,
                              validate_min=validate_min, validate_max=validate_max)
    FormSet.model = model
    return FormSet


# InlineFormSets #############################################################