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):
"""
Returns a FormSet class for the given Django model class.
"""
# modelform_factory will produce the same warning/error, but that will be
# difficult to debug for code that needs upgrading, so we produce the
# warning here too. This logic is reproducing logic inside
# modelform_factory, but it can be removed once the deprecation cycle is
# complete, since the validation exception will produce a helpful
# stacktrace.
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):
warnings.warn("Calling modelformset_factory without defining 'fields' or "
"'exclude' explicitly is deprecated",
PendingDeprecationWarning, stacklevel=2)
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)
FormSet = formset_factory(form, formset, extra=extra, max_num=max_num,
can_order=can_order, can_delete=can_delete,
validate_max=validate_max)
FormSet.model = model
return FormSet
# InlineFormSets #############################################################
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