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Changelog

Changes in 3.1 (2021-11-18)

  • Added support for Django 4.0.
  • Fixed crash when the admin "add type" view has no choices; will show a permission denied.
  • Fixed missing locale folder in sdist.
  • Fixed missing QuerySet.bulk_create(.., ignore_conflicts=True) parameter support.
  • Fixed FilteredRelation support.
  • Fixed supporting class keyword arguments in model definitions for __init_subclass__().
  • Fixed including polymorphic.tests.migrations in the sdist.
  • Fixed non-polymorphic parent handling, which has no _base_objects.
  • Fixed missing widgets support for modelform_factory().
  • Fixed has_changed handling for polymorphic_ctype_id due to implicit str to int conversions.
  • Fixed Q object handling when lists are used (e.g. in django-advanced-filters).
  • Fixed Django Admin support when using a script-prefix.

Many thanks to everyone providing clear pull requests!

Changes in 3.0.0 (2020-08-21)

  • Support for Django 3.X
  • Dropped support for python 2.X
  • A lot of various fixes and improvements by various authors. Thanks a lot!

Changes in 2.1.2 (2019-07-15)

  • Fix PolymorphicInlineModelAdmin media jQuery include for Django 2.0+

Changes in 2.1.1 (2019-07-15)

  • Fixed admin import error due to isort changes.

Changes in 2.1 (2019-07-15)

  • Added Django 2.2 support.
  • Changed .non_polymorphic(), to use a different iterable class that completely cirvumvent polymorphic.
  • Changed SQL for instance_of filter: use IN statement instead of OR clauses.
  • Changed queryset iteration to implement prefetch_related() support.
  • Fixed Django 3.0 alpha compatibility.
  • Fixed compatibility with current django-extra-views in polymorphic.contrib.extra_views.
  • Fixed prefetch_related() support on polymorphic M2M relations.
  • Fixed model subclass ___ selector for abstract/proxy models.
  • Fixed model subclass ___ selector for models with a custom OneToOneField(parent_link=True).
  • Fixed unwanted results on calling queryset.get_real_instances([]).
  • Fixed unwanted TypeError exception when PolymorphicTypeInvalid should have raised.
  • Fixed hiding the add-button of polymorphic lines in the Django admin.
  • Reformatted all files with black

Changes in 2.0.3 (2018-08-24)

  • Fixed admin crash for Django 2.1 with missing use_required_attribute.

Changes in 2.0.2 (2018-02-05)

  • Fixed manager inheritance behavior for Django 1.11, by automatically enabling Meta.manager_inheritance_from_future if it's not defined. This restores the manager inheritance behavior that django-polymorphic 1.3 provided for Django 1.x projects.
  • Fixed internal base_objects usage.

Changes in 2.0.1 (2018-02-05)

  • Fixed manager inheritance detection for Django 1.11.

    It's recommended to use Meta.manager_inheritance_from_future so Django 1.x code also inherit the PolymorphicManager in all subclasses. Django 2.0 already does this by default.

  • Deprecated the base_objects manager. Use objects.non_polymorphic() instead.

  • Optimized detection for dumpdata behavior, avoiding the performance hit of __getattribute__().

  • Fixed test management commands

Changes in 2.0 (2018-01-22)

  • BACKWARDS INCOMPATIBILITY: Dropped Django 1.8 and 1.10 support.
  • BACKWARDS INCOMPATIBILITY: Removed old deprecated code from 1.0, thus:
  • Import managers from polymorphic.managers (plural), not polymorphic.manager.
  • Register child models to the admin as well using @admin.register() or admin.site.register(), as this is no longer done automatically.
  • Added Django 2.0 support.

Also backported into 1.3.1:

  • Added PolymorphicTypeUndefined exception for incomplete imported models. When a data migration or import creates an polymorphic model, the polymorphic_ctype_id field should be filled in manually too. The polymorphic.utils.reset_polymorphic_ctype function can be used for that.
  • Added PolymorphicTypeInvalid exception when database was incorrectly imported.
  • Added polymorphic.utils.get_base_polymorphic_model() to find the base model for types.
  • Using base_model on the polymorphic admins is no longer required, as this can be autodetected.
  • Fixed manager errors for swappable models.
  • Fixed deleteText of |as_script_options template filter.
  • Fixed .filter(applabel__ModelName___field=...) lookups.
  • Fixed proxy model support in formsets.
  • Fixed error with .defer and child models that use the same parent.
  • Fixed error message when polymorphic_ctype_id is null.
  • Fixed fieldsets recursion in the admin.
  • Improved polymorphic.utils.reset_polymorphic_ctype() to accept models in random ordering.
  • Fix fieldsets handling in the admin (declared_fieldsets is removed since Django 1.9)

Version 1.3.1 (2018-04-16)

Backported various fixes from 2.x to support older Django versions:

  • Added PolymorphicTypeUndefined exception for incomplete imported models. When a data migration or import creates an polymorphic model, the polymorphic_ctype_id field should be filled in manually too. The polymorphic.utils.reset_polymorphic_ctype function can be used for that.
  • Added PolymorphicTypeInvalid exception when database was incorrectly imported.
  • Added polymorphic.utils.get_base_polymorphic_model() to find the base model for types.
  • Using base_model on the polymorphic admins is no longer required, as this can be autodetected.
  • Fixed manager errors for swappable models.
  • Fixed deleteText of |as_script_options template filter.
  • Fixed .filter(applabel__ModelName___field=...) lookups.
  • Fixed proxy model support in formsets.
  • Fixed error with .defer and child models that use the same parent.
  • Fixed error message when polymorphic_ctype_id is null.
  • Fixed fieldsets recursion in the admin.
  • Improved polymorphic.utils.reset_polymorphic_ctype() to accept models in random ordering.
  • Fix fieldsets handling in the admin (declared_fieldsets is removed since Django 1.9)

Version 1.3 (2017-08-01)

  • BACKWARDS INCOMPATIBILITY: Dropped Django 1.4, 1.5, 1.6, 1.7, 1.9 and Python 2.6 support. Only official Django releases (1.8, 1.10, 1.11) are supported now.
  • Allow expressions to pass unchanged in .order_by()
  • Fixed Django 1.11 accessor checks (to support subclasses of ForwardManyToOneDescriptor, like ForwardOneToOneDescriptor)
  • Fixed polib syntax error messages in translations.

Version 1.2 (2017-05-01)

  • Django 1.11 support.
  • Fixed PolymorphicInlineModelAdmin to explictly exclude polymorphic_ctype.
  • Fixed Python 3 TypeError in the admin when preserving the query string.
  • Fixed Python 3 issue due to force_unicode() usage instead of force_text().
  • Fixed z-index attribute for admin menu appearance.

Version 1.1 (2017-02-03)

  • Added class based formset views in polymorphic/contrib/extra_views.
  • Added helper function polymorphic.utils.reset_polymorphic_ctype(). This eases the migration old existing models to polymorphic.
  • Fixed Python 2.6 issue.
  • Fixed Django 1.6 support.

Version 1.0.2 (2016-10-14)

  • Added helper function for django-guardian; add GUARDIAN_GET_CONTENT_TYPE = 'polymorphic.contrib.guardian.get_polymorphic_base_content_type' to the project settings to let guardian handles inherited models properly.
  • Fixed polymorphic_modelformset_factory() usage.
  • Fixed Python 3 bug for inline formsets.
  • Fixed CSS for Grappelli, so model choice menu properly overlaps.
  • Fixed ParentAdminNotRegistered exception for models that are registered via a proxy model instead of the real base model.

Version 1.0.1 (2016-09-11)

  • Fixed compatibility with manager changes in Django 1.10.1

Version 1.0 (2016-09-02)

  • Added Django 1.10 support.
  • Added admin inline support for polymorphic models.
  • Added formset support for polymorphic models.
  • Added support for polymorphic queryset limiting effects on proxy models.
  • Added support for multiple databases with the .using() method and using=.. keyword argument.
  • Fixed modifying passed Q() objects in place.

Note

This version provides a new method for registering the admin models. While the old method is still supported, we recommend to upgrade your code. The new registration style improves the compatibility in the Django admin.

  • Register each PolymorphicChildModelAdmin with the admin site too.
  • The child_models attribute of the PolymorphicParentModelAdmin should be a flat list of all child models. The (model, admin) tuple is obsolete.

Also note that proxy models will now limit the queryset too.

Fixed since 1.0b1 (2016-08-10)

  • Fix formset empty-form display when there are form errors.
  • Fix formset empty-form hiding for Grappelli.
  • Fixed packing admin/polymorphic/edit_inline/stacked.html in the wheel format.

Version 0.9.2 (2016-05-04)

  • Fix error when using date_hierarchy field in the admin
  • Fixed Django 1.10 warning in admin add-type view.

Version 0.9.1 (2016-02-18)

  • Fixed support for PolymorphicManager.from_queryset() for custom query sets.
  • Fixed Django 1.7 changeform_view() redirection to the child admin site. This fixes custom admin code that uses these views, such as django-reversion's revision_view() / recover_view().
  • Fixed .only('pk') field support.
  • Fixed object_history_template breadcrumb. NOTE: when using django-reversion / django-reversion-compare, make sure to implement a admin/polymorphic/object_history.html template in your project that extends from reversion/object_history.html or reversion-compare/object_history.html respectively.

Version 0.9 (2016-02-17)

  • Added .only() and .defer() support.
  • Added support for Django 1.8 complex expressions in .annotate() / .aggregate().
  • Fix Django 1.9 handling of custom URLs. The new change-URL redirect overlapped any custom URLs defined in the child admin.
  • Fix Django 1.9 support in the admin.
  • Fix setting an extra custom manager without overriding the _default_manager.
  • Fix missing history_view() redirection to the child admin, which is important for django-reversion support. See the documentation for hints for :ref:`django-reversion-compare support <django-reversion-compare-support>`.

Version 0.8.1 (2015-12-29)

  • Fixed support for reverse relations for relname___field when the field starts with an _ character. Otherwise, the query will be interpreted as subclass lookup (ClassName___field).

Version 0.8 (2015-12-28)

  • Added Django 1.9 compatibility.
  • Renamed polymorphic.manager => polymorphic.managers for consistentcy.
  • BACKWARDS INCOMPATIBILITY: The import paths have changed to support Django 1.9. Instead of from polymorphic import X, you'll have to import from the proper package. For example:
from polymorphic.models import PolymorphicModel
from polymorphic.managers import PolymorphicManager, PolymorphicQuerySet
from polymorphic.showfields import ShowFieldContent, ShowFieldType, ShowFieldTypeAndContent
  • BACKWARDS INCOMPATIBILITY: Removed __version__.py in favor of a standard __version__ in polymorphic/__init__.py.
  • BACKWARDS INCOMPATIBILITY: Removed automatic proxying of method calls to the queryset class. Use the standard Django methods instead:
# In model code:
objects = PolymorphicQuerySet.as_manager()

# For manager code:
MyCustomManager = PolymorphicManager.from_queryset(MyCustomQuerySet)

Version 0.7.2 (2015-10-01)

  • Added queryset.as_manager() support for Django 1.7/1.8
  • Optimize model access for non-dumpdata usage; avoid __getattribute__() call each time to access the manager.
  • Fixed 500 error when using invalid PK's in the admin URL, return 404 instead.
  • Fixed possible issues when using an custom AdminSite class for the parent object.
  • Fixed Pickle exception when polymorphic model is cached.

Version 0.7.1 (2015-04-30)

  • Fixed Django 1.8 support for related field widgets.

Version 0.7 (2015-04-08)

  • Added Django 1.8 support
  • Added support for custom primary key defined using mybase_ptr = models.OneToOneField(BaseClass, parent_link=True, related_name="...").
  • Fixed Python 3 issue in the admin
  • Fixed _default_manager to be consistent with Django, it's now assigned directly instead of using add_to_class()
  • Fixed 500 error for admin URLs without a '/', e.g. admin/app/parentmodel/id.
  • Fixed preserved filter for Django admin in delete views
  • Removed test noise for diamond inheritance problem (which Django 1.7 detects)

Version 0.6.1 (2014-12-30)

  • Remove Django 1.7 warnings
  • Fix Django 1.4/1.5 queryset calls on related objects for unknown methods. The RelatedManager code overrides get_query_set() while __getattr__() used the new-style get_queryset().
  • Fix validate_model_fields(), caused errors when metaclass raises errors

Version 0.6 (2014-10-14)

  • Added Django 1.7 support.
  • Added permission check for all child types.
  • BACKWARDS INCOMPATIBILITY: the get_child_type_choices() method receives 2 arguments now (request, action). If you have overwritten this method in your code, make sure the method signature is updated accordingly.

Version 0.5.6 (2014-07-21)

  • Added pk_regex to the PolymorphicParentModelAdmin to support non-integer primary keys.
  • Fixed passing ?ct_id= to the add view for Django 1.6 (fixes compatibility with django-parler).

Version 0.5.5 (2014-04-29)

  • Fixed get_real_instance_class() for proxy models (broke in 0.5.4).

Version 0.5.4 (2014-04-09)

  • Fix .non_polymorphic() to returns a clone of the queryset, instead of effecting the existing queryset.
  • Fix missing alters_data = True annotations on the overwritten save() methods.
  • Fix infinite recursion bug in the admin with Django 1.6+
  • Added detection of bad ContentType table data.

Version 0.5.3 (2013-09-17)

  • Fix TypeError when base_form was not defined.
  • Fix passing /admin/app/model/id/XYZ urls to the correct admin backend. There is no need to include a ?ct_id=.. field, as the ID already provides enough information.

Version 0.5.2 (2013-09-05)

  • Fix Grappelli breadcrumb support in the views.
  • Fix unwanted ___ handling in the ORM when a field name starts with an underscore; this detects you meant relatedfield__ _underscorefield instead of ClassName___field.
  • Fix missing permission check in the "add type" view. This was caught however in the next step.
  • Fix admin validation errors related to additional non-model form fields.

Version 0.5.1 (2013-07-05)

  • Add Django 1.6 support.
  • Fix Grappelli theme support in the "Add type" view.

Version 0.5 (2013-04-20)

  • Add Python 3.2 and 3.3 support
  • Fix errors with ContentType objects that don't refer to an existing model.

Version 0.4.2 (2013-04-10)

  • Used proper __version__ marker.

Version 0.4.1 (2013-04-10)

  • Add Django 1.5 and 1.6 support
  • Add proxy model support
  • Add default admin list_filter for polymorphic model type.
  • Fix queryset support of related objects.
  • Performed an overall cleanup of the project
  • Deprecated the queryset_class argument of the PolymorphicManager constructor, use the class attribute instead.
  • Dropped Django 1.1, 1.2 and 1.3 support

Version 0.4 (2013-03-25)

  • Update example project for Django 1.4
  • Added tox and Travis configuration

Version 0.3.1 (2013-02-28)

  • SQL optimization, avoid query in pre_save_polymorphic()

Version 0.3 (2013-02-28)

Many changes to the codebase happened, but no new version was released to pypi for years. 0.3 contains fixes submitted by many contributors, huge thanks to everyone!

  • Added a polymorphic admin interface.
  • PEP8 and code cleanups by various authors

Version 0.2 (2011-04-27)

The 0.2 release serves as legacy release. It supports Django 1.1 up till 1.4 and Python 2.4 up till 2.7.

For a detailed list of it's changes, see the :doc:`archived changelog <changelog_archive>`.