Fixed #17642 -- Added min_num support to modelformsets, inlines, and the admin.

Thanks Stephen Burrows for work on the patch as well.

Forwardport of 2914f66983 from stable/1.7.x
This commit is contained in:
Anders Steinlein 2014-03-05 21:19:40 +01:00 committed by Tim Graham
parent 860d31ac7a
commit 4ef10f245a
15 changed files with 229 additions and 61 deletions

View File

@ -850,6 +850,7 @@ class InlineModelAdminChecks(BaseModelAdminChecks):
errors.extend(self._check_exclude_of_parent_model(cls, parent_model))
errors.extend(self._check_extra(cls))
errors.extend(self._check_max_num(cls))
errors.extend(self._check_min_num(cls))
errors.extend(self._check_formset(cls))
return errors
@ -909,12 +910,22 @@ class InlineModelAdminChecks(BaseModelAdminChecks):
else:
return []
def _check_min_num(self, cls):
""" Check that min_num is an integer. """
if cls.min_num is None:
return []
elif not isinstance(cls.min_num, int):
return must_be('an integer', option='min_num', obj=cls, id='admin.E205')
else:
return []
def _check_formset(self, cls):
""" Check formset is a subclass of BaseModelFormSet. """
if not issubclass(cls.formset, BaseModelFormSet):
return must_inherit_from(parent='BaseModelFormSet', option='formset',
obj=cls, id='admin.E205')
obj=cls, id='admin.E206')
else:
return []

View File

@ -1706,6 +1706,7 @@ class InlineModelAdmin(BaseModelAdmin):
fk_name = None
formset = BaseInlineFormSet
extra = 3
min_num = None
max_num = None
template = None
verbose_name = None
@ -1738,6 +1739,10 @@ class InlineModelAdmin(BaseModelAdmin):
"""Hook for customizing the number of extra inline forms."""
return self.extra
def get_min_num(self, request, obj=None, **kwargs):
"""Hook for customizing the min number of inline forms."""
return self.min_num
def get_max_num(self, request, obj=None, **kwargs):
"""Hook for customizing the max number of extra inline forms."""
return self.max_num
@ -1769,6 +1774,7 @@ class InlineModelAdmin(BaseModelAdmin):
"exclude": exclude,
"formfield_callback": partial(self.formfield_for_dbfield, request=request),
"extra": self.get_extra(request, obj, **kwargs),
"min_num": self.get_min_num(request, obj, **kwargs),
"max_num": self.get_max_num(request, obj, **kwargs),
"can_delete": can_delete,
}

View File

@ -119,6 +119,7 @@ class GenericInlineModelAdmin(InlineModelAdmin):
"can_delete": can_delete,
"can_order": False,
"fields": fields,
"min_num": self.min_num,
"max_num": self.max_num,
"exclude": exclude
}

View File

@ -56,9 +56,9 @@ def generic_inlineformset_factory(model, form=ModelForm,
ct_field="content_type", fk_field="object_id",
fields=None, exclude=None,
extra=3, can_order=False, can_delete=True,
max_num=None,
formfield_callback=None, validate_max=False,
for_concrete_model=True):
max_num=None, formfield_callback=None,
validate_max=False, for_concrete_model=True,
min_num=None, validate_min=False):
"""
Returns a ``GenericInlineFormSet`` for the given kwargs.
@ -81,7 +81,8 @@ def generic_inlineformset_factory(model, form=ModelForm,
formset=formset,
extra=extra, can_delete=can_delete, can_order=can_order,
fields=fields, exclude=exclude, max_num=max_num,
validate_max=validate_max)
validate_max=validate_max, min_num=min_num,
validate_min=validate_min)
FormSet.ct_field = ct_field
FormSet.ct_fk_field = fk_field
FormSet.for_concrete_model = for_concrete_model

View File

@ -805,7 +805,8 @@ 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):
labels=None, help_texts=None, error_messages=None,
min_num=None, validate_min=False):
"""
Returns a FormSet class for the given Django model class.
"""
@ -823,9 +824,9 @@ def modelformset_factory(model, form=ModelForm, formfield_callback=None,
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,
FormSet = formset_factory(form, formset, extra=extra, min_num=min_num, max_num=max_num,
can_order=can_order, can_delete=can_delete,
validate_max=validate_max)
validate_min=validate_min, validate_max=validate_max)
FormSet.model = model
return FormSet
@ -969,7 +970,8 @@ def inlineformset_factory(parent_model, model, form=ModelForm,
fields=None, exclude=None, extra=3, can_order=False,
can_delete=True, max_num=None, formfield_callback=None,
widgets=None, validate_max=False, localized_fields=None,
labels=None, help_texts=None, error_messages=None):
labels=None, help_texts=None, error_messages=None,
min_num=None, validate_min=False):
"""
Returns an ``InlineFormSet`` for the given kwargs.
@ -989,8 +991,10 @@ def inlineformset_factory(parent_model, model, form=ModelForm,
'can_order': can_order,
'fields': fields,
'exclude': exclude,
'min_num': min_num,
'max_num': max_num,
'widgets': widgets,
'validate_min': validate_min,
'validate_max': validate_max,
'localized_fields': localized_fields,
'labels': labels,

View File

@ -205,7 +205,8 @@ inline on a :class:`~django.contrib.admin.ModelAdmin`.
* **admin.E202**: ``<model>`` has no ForeignKey to ``<parent model>``./``<model>`` has more than one ForeignKey to ``<parent model>``.
* **admin.E203**: The value of ``extra`` must be an integer.
* **admin.E204**: The value of ``max_num`` must be an integer.
* **admin.E205**: The value of ``formset`` must inherit from ``BaseModelFormSet``.
* **admin.E205**: The value of ``min_num`` must be an integer.
* **admin.E206**: The value of ``formset`` must inherit from ``BaseModelFormSet``.
GenericInlineModelAdmin
~~~~~~~~~~~~~~~~~~~~~~~

View File

@ -1966,6 +1966,16 @@ The ``InlineModelAdmin`` class adds:
:meth:`InlineModelAdmin.get_max_num` also allows you to customize the
maximum number of extra forms.
.. attribute:: InlineModelAdmin.min_num
.. versionadded:: 1.7
This controls the minimum number of forms to show in the inline.
See :func:`~django.forms.models.modelformset_factory` for more information.
:meth:`InlineModelAdmin.get_min_num` also allows you to customize the
minimum number of displayed forms.
.. attribute:: InlineModelAdmin.raw_id_fields
By default, Django's admin uses a select-box interface (<select>) for
@ -2042,6 +2052,16 @@ The ``InlineModelAdmin`` class adds:
return max_num - 5
return max_num
.. method:: InlineModelAdmin.get_min_num(request, obj=None, **kwargs)
.. versionadded:: 1.7
Returns the minimum number of inline forms to use. By default,
returns the :attr:`InlineModelAdmin.min_num` attribute.
Override this method to programmatically determine the minimum number of
inline forms. For example, this may be based on the model instance
(passed as the keyword argument ``obj``).
Working with a model with two or more foreign keys to the same parent model
---------------------------------------------------------------------------

View File

@ -495,7 +495,7 @@ The :mod:`django.contrib.contenttypes.forms` module provides:
This class used to be defined in ``django.contrib.contenttypes.generic``.
.. function:: generic_inlineformset_factory(model, form=ModelForm, formset=BaseGenericInlineFormSet, ct_field="content_type", fk_field="object_id", fields=None, exclude=None, extra=3, can_order=False, can_delete=True, max_num=None, formfield_callback=None, validate_max=False, for_concrete_model=True)
.. function:: generic_inlineformset_factory(model, form=ModelForm, formset=BaseGenericInlineFormSet, ct_field="content_type", fk_field="object_id", fields=None, exclude=None, extra=3, can_order=False, can_delete=True, max_num=None, formfield_callback=None, validate_max=False, for_concrete_model=True, min_num=None, validate_min=False)
Returns a ``GenericInlineFormSet`` using
:func:`~django.forms.models.modelformset_factory`.
@ -514,6 +514,10 @@ The :mod:`django.contrib.contenttypes.forms` module provides:
This function used to be defined in ``django.contrib.contenttypes.generic``.
.. versionchanged:: 1.7
``min_num`` and ``validate_min`` were added.
.. module:: django.contrib.contenttypes.admin

View File

@ -45,7 +45,7 @@ Model Form Functions
Previously, omitting the list of fields was allowed and resulted in
a form with all fields of the model.
.. function:: 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)
.. function:: 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)
Returns a ``FormSet`` class for the given ``model`` class.
@ -61,7 +61,7 @@ Model Form Functions
See :ref:`model-formsets` for example usage.
.. function:: inlineformset_factory(parent_model, model, form=ModelForm, formset=BaseInlineFormSet, fk_name=None, fields=None, exclude=None, extra=3, can_order=False, can_delete=True, max_num=None, formfield_callback=None, widgets=None, validate_max=False, localized_fields=None, labels=None, help_texts=None, error_messages=None)
.. function:: inlineformset_factory(parent_model, model, form=ModelForm, formset=BaseInlineFormSet, fk_name=None, fields=None, exclude=None, extra=3, can_order=False, can_delete=True, max_num=None, formfield_callback=None, widgets=None, validate_max=False, localized_fields=None, labels=None, help_texts=None, error_messages=None, min_num=None, validate_min=False)
Returns an ``InlineFormSet`` using :func:`modelformset_factory` with
defaults of ``formset=``:class:`~django.forms.models.BaseInlineFormSet`,

View File

@ -1,13 +1,14 @@
from __future__ import unicode_literals
from django.contrib.admin import TabularInline, ModelAdmin
from django.contrib.admin.tests import AdminSeleniumWebDriverTestCase
from django.contrib.admin.helpers import InlineAdminForm
from django.contrib.auth.models import User, Permission
from django.contrib.contenttypes.models import ContentType
from django.test import TestCase, override_settings
from django.test import TestCase, override_settings, RequestFactory
# local test models
from .admin import InnerInline
from .admin import InnerInline, site as admin_site
from .models import (Holder, Inner, Holder2, Inner2, Holder3, Inner3, Person,
OutfitItem, Fashionista, Teacher, Parent, Child, Author, Book, Profile,
ProfileCollection, ParentModelWithCustomPk, ChildModel1, ChildModel2,
@ -28,6 +29,7 @@ class TestInline(TestCase):
result = self.client.login(username='super', password='secret')
self.assertEqual(result, True)
self.factory = RequestFactory()
def tearDown(self):
self.client.logout()
@ -221,6 +223,62 @@ class TestInline(TestCase):
self.assertContains(response, max_forms_input % 2)
self.assertContains(response, total_forms_hidden)
def test_min_num(self):
"""
Ensure that min_num and extra determine number of forms.
"""
class MinNumInline(TabularInline):
model = BinaryTree
min_num = 2
extra = 3
modeladmin = ModelAdmin(BinaryTree, admin_site)
modeladmin.inlines = [MinNumInline]
min_forms = '<input id="id_binarytree_set-MIN_NUM_FORMS" name="binarytree_set-MIN_NUM_FORMS" type="hidden" value="2" />'
total_forms = '<input id="id_binarytree_set-TOTAL_FORMS" name="binarytree_set-TOTAL_FORMS" type="hidden" value="5" />'
request = self.factory.get('/admin/admin_inlines/binarytree/add/')
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request)
self.assertContains(response, min_forms)
self.assertContains(response, total_forms)
def test_custom_min_num(self):
"""
Ensure that get_min_num is called and used correctly.
See #22628 - this will change when that's fixed.
"""
bt_head = BinaryTree.objects.create(name="Tree Head")
BinaryTree.objects.create(name="First Child", parent=bt_head)
class MinNumInline(TabularInline):
model = BinaryTree
extra = 3
def get_min_num(self, request, obj=None, **kwargs):
if obj:
return 5
return 2
modeladmin = ModelAdmin(BinaryTree, admin_site)
modeladmin.inlines = [MinNumInline]
min_forms = '<input id="id_binarytree_set-MIN_NUM_FORMS" name="binarytree_set-MIN_NUM_FORMS" type="hidden" value="%d" />'
total_forms = '<input id="id_binarytree_set-TOTAL_FORMS" name="binarytree_set-TOTAL_FORMS" type="hidden" value="%d" />'
request = self.factory.get('/admin/admin_inlines/binarytree/add/')
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request)
self.assertContains(response, min_forms % 2)
self.assertContains(response, total_forms % 5)
request = self.factory.get("/admin/admin_inlines/binarytree/%d/" % bt_head.id)
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request, object_id=str(bt_head.id))
self.assertContains(response, min_forms % 5)
self.assertContains(response, total_forms % 9)
def test_inline_nonauto_noneditable_pk(self):
response = self.client.get('/admin/admin_inlines/author/add/')
self.assertContains(response,

View File

@ -1,8 +1,8 @@
from django.contrib import admin
from django.contrib.contenttypes.admin import GenericTabularInline
from .models import (Media, PhoneNumber, Episode, EpisodeExtra, Contact,
Category, EpisodePermanent, EpisodeMaxNum)
from .models import (Media, PhoneNumber, Episode, Contact,
Category, EpisodePermanent)
site = admin.AdminSite(name="admin")
@ -18,17 +18,6 @@ class EpisodeAdmin(admin.ModelAdmin):
]
class MediaExtraInline(GenericTabularInline):
model = Media
extra = 0
class MediaMaxNumInline(GenericTabularInline):
model = Media
extra = 5
max_num = 2
class PhoneNumberInline(GenericTabularInline):
model = PhoneNumber
@ -39,8 +28,6 @@ class MediaPermanentInline(GenericTabularInline):
site.register(Episode, EpisodeAdmin)
site.register(EpisodeExtra, inlines=[MediaExtraInline])
site.register(EpisodeMaxNum, inlines=[MediaMaxNumInline])
site.register(Contact, inlines=[PhoneNumberInline])
site.register(Category)
site.register(EpisodePermanent, inlines=[MediaPermanentInline])

View File

@ -27,26 +27,6 @@ class Media(models.Model):
def __str__(self):
return self.url
#
# These models let us test the different GenericInline settings at
# different urls in the admin site.
#
#
# Generic inline with extra = 0
#
class EpisodeExtra(Episode):
pass
#
# Generic inline with extra and max_num
#
class EpisodeMaxNum(Episode):
pass
#
# Generic inline with unique_together

View File

@ -4,17 +4,17 @@ import warnings
from django.contrib import admin
from django.contrib.admin.sites import AdminSite
from django.contrib.auth.models import User
from django.contrib.contenttypes.admin import GenericTabularInline
from django.contrib.contenttypes.forms import generic_inlineformset_factory
from django.forms.formsets import DEFAULT_MAX_NUM
from django.forms.models import ModelForm
from django.test import TestCase, override_settings
from django.test import TestCase, override_settings, RequestFactory
from django.utils.deprecation import RemovedInDjango19Warning
# local test models
from .admin import MediaInline, MediaPermanentInline
from .models import (Episode, EpisodeExtra, EpisodeMaxNum, Media,
EpisodePermanent, Category)
from .admin import MediaInline, MediaPermanentInline, site as admin_site
from .models import Episode, Media, EpisodePermanent, Category
@override_settings(PASSWORD_HASHERS=('django.contrib.auth.hashers.SHA1PasswordHasher',),
@ -137,6 +137,7 @@ class GenericInlineAdminParametersTest(TestCase):
def setUp(self):
self.client.login(username='super', password='secret')
self.factory = RequestFactory()
def tearDown(self):
self.client.logout()
@ -166,9 +167,18 @@ class GenericInlineAdminParametersTest(TestCase):
"""
With extra=0, there should be one form.
"""
e = self._create_object(EpisodeExtra)
response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/episodeextra/%s/' % e.pk)
formset = response.context['inline_admin_formsets'][0].formset
class ExtraInline(GenericTabularInline):
model = Media
extra = 0
modeladmin = admin.ModelAdmin(Episode, admin_site)
modeladmin.inlines = [ExtraInline]
e = self._create_object(Episode)
request = self.factory.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request, object_id=str(e.pk))
formset = response.context_data['inline_admin_formsets'][0].formset
self.assertEqual(formset.total_form_count(), 1)
self.assertEqual(formset.initial_form_count(), 1)
@ -176,12 +186,43 @@ class GenericInlineAdminParametersTest(TestCase):
"""
With extra=5 and max_num=2, there should be only 2 forms.
"""
e = self._create_object(EpisodeMaxNum)
response = self.client.get('/generic_inline_admin/admin/generic_inline_admin/episodemaxnum/%s/' % e.pk)
formset = response.context['inline_admin_formsets'][0].formset
class MaxNumInline(GenericTabularInline):
model = Media
extra = 5
max_num = 2
modeladmin = admin.ModelAdmin(Episode, admin_site)
modeladmin.inlines = [MaxNumInline]
e = self._create_object(Episode)
request = self.factory.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request, object_id=str(e.pk))
formset = response.context_data['inline_admin_formsets'][0].formset
self.assertEqual(formset.total_form_count(), 2)
self.assertEqual(formset.initial_form_count(), 1)
def testMinNumParam(self):
"""
With extra=3 and min_num=2, there should be six forms.
See #22628 - this will change when that's fixed.
"""
class MinNumInline(GenericTabularInline):
model = Media
extra = 3
min_num = 2
modeladmin = admin.ModelAdmin(Episode, admin_site)
modeladmin.inlines = [MinNumInline]
e = self._create_object(Episode)
request = self.factory.get('/generic_inline_admin/admin/generic_inline_admin/episode/%s/' % e.pk)
request.user = User(username='super', is_superuser=True)
response = modeladmin.changeform_view(request, object_id=str(e.pk))
formset = response.context_data['inline_admin_formsets'][0].formset
self.assertEqual(formset.total_form_count(), 6)
self.assertEqual(formset.initial_form_count(), 1)
@override_settings(PASSWORD_HASHERS=('django.contrib.auth.hashers.SHA1PasswordHasher',),
ROOT_URLCONF="generic_inline_admin.urls")

View File

@ -376,6 +376,33 @@ class ModelFormsetTest(TestCase):
'<Author: Walt Whitman>',
])
def test_min_num(self):
# Test the behavior of min_num with model formsets. It should be
# added to extra.
qs = Author.objects.none()
AuthorFormSet = modelformset_factory(Author, fields="__all__", extra=0)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 0)
AuthorFormSet = modelformset_factory(Author, fields="__all__", min_num=1, extra=0)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 1)
AuthorFormSet = modelformset_factory(Author, fields="__all__", min_num=1, extra=1)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 2)
def test_min_num_with_existing(self):
# Test the behavior of min_num with existing objects.
# See #22628 - this will change when that's fixed.
Author.objects.create(name='Charles Baudelaire')
qs = Author.objects.all()
AuthorFormSet = modelformset_factory(Author, fields="__all__", extra=0, min_num=1)
formset = AuthorFormSet(queryset=qs)
self.assertEqual(len(formset.forms), 2)
def test_custom_save_method(self):
class PoetForm(forms.ModelForm):
def save(self, commit=True):

View File

@ -1444,6 +1444,33 @@ class MaxNumCheckTests(CheckTestCase):
self.assertIsValid(ValidationTestModelAdmin, ValidationTestModel)
class MinNumCheckTests(CheckTestCase):
def test_not_integer(self):
class ValidationTestInline(TabularInline):
model = ValidationTestInlineModel
min_num = "hello"
class ValidationTestModelAdmin(ModelAdmin):
inlines = [ValidationTestInline]
self.assertIsInvalid(
ValidationTestModelAdmin, ValidationTestModel,
"The value of 'min_num' must be an integer.",
'admin.E205',
invalid_obj=ValidationTestInline)
def test_valid_case(self):
class ValidationTestInline(TabularInline):
model = ValidationTestInlineModel
min_num = 2
class ValidationTestModelAdmin(ModelAdmin):
inlines = [ValidationTestInline]
self.assertIsValid(ValidationTestModelAdmin, ValidationTestModel)
class FormsetCheckTests(CheckTestCase):
def test_invalid_type(self):
@ -1460,7 +1487,7 @@ class FormsetCheckTests(CheckTestCase):
self.assertIsInvalid(
ValidationTestModelAdmin, ValidationTestModel,
"The value of 'formset' must inherit from 'BaseModelFormSet'.",
'admin.E205',
'admin.E206',
invalid_obj=ValidationTestInline)
def test_valid_case(self):