from __future__ import unicode_literals from django.forms.models import inlineformset_factory from django.test import TestCase, skipUnlessDBFeature from django.utils import six from .models import Poet, Poem, School, Parent, Child class DeletionTests(TestCase): def test_deletion(self): PoemFormSet = inlineformset_factory(Poet, Poem, can_delete=True, fields="__all__") poet = Poet.objects.create(name='test') poem = poet.poem_set.create(name='test poem') data = { 'poem_set-TOTAL_FORMS': '1', 'poem_set-INITIAL_FORMS': '1', 'poem_set-MAX_NUM_FORMS': '0', 'poem_set-0-id': str(poem.pk), 'poem_set-0-poet': str(poet.pk), 'poem_set-0-name': 'test', 'poem_set-0-DELETE': 'on', } formset = PoemFormSet(data, instance=poet) formset.save() self.assertTrue(formset.is_valid()) self.assertEqual(Poem.objects.count(), 0) def test_add_form_deletion_when_invalid(self): """ Make sure that an add form that is filled out, but marked for deletion doesn't cause validation errors. """ PoemFormSet = inlineformset_factory(Poet, Poem, can_delete=True, fields="__all__") poet = Poet.objects.create(name='test') data = { 'poem_set-TOTAL_FORMS': '1', 'poem_set-INITIAL_FORMS': '0', 'poem_set-MAX_NUM_FORMS': '0', 'poem_set-0-id': '', 'poem_set-0-poem': '1', 'poem_set-0-name': 'x' * 1000, } formset = PoemFormSet(data, instance=poet) # Make sure this form doesn't pass validation. self.assertEqual(formset.is_valid(), False) self.assertEqual(Poem.objects.count(), 0) # Then make sure that it *does* pass validation and delete the object, # even though the data isn't actually valid. data['poem_set-0-DELETE'] = 'on' formset = PoemFormSet(data, instance=poet) self.assertEqual(formset.is_valid(), True) formset.save() self.assertEqual(Poem.objects.count(), 0) def test_change_form_deletion_when_invalid(self): """ Make sure that a change form that is filled out, but marked for deletion doesn't cause validation errors. """ PoemFormSet = inlineformset_factory(Poet, Poem, can_delete=True, fields="__all__") poet = Poet.objects.create(name='test') poem = poet.poem_set.create(name='test poem') data = { 'poem_set-TOTAL_FORMS': '1', 'poem_set-INITIAL_FORMS': '1', 'poem_set-MAX_NUM_FORMS': '0', 'poem_set-0-id': six.text_type(poem.id), 'poem_set-0-poem': six.text_type(poem.id), 'poem_set-0-name': 'x' * 1000, } formset = PoemFormSet(data, instance=poet) # Make sure this form doesn't pass validation. self.assertEqual(formset.is_valid(), False) self.assertEqual(Poem.objects.count(), 1) # Then make sure that it *does* pass validation and delete the object, # even though the data isn't actually valid. data['poem_set-0-DELETE'] = 'on' formset = PoemFormSet(data, instance=poet) self.assertEqual(formset.is_valid(), True) formset.save() self.assertEqual(Poem.objects.count(), 0) def test_save_new(self): """ Make sure inlineformsets respect commit=False regression for #10750 """ # exclude some required field from the forms ChildFormSet = inlineformset_factory(School, Child, exclude=['father', 'mother']) school = School.objects.create(name='test') mother = Parent.objects.create(name='mother') father = Parent.objects.create(name='father') data = { 'child_set-TOTAL_FORMS': '1', 'child_set-INITIAL_FORMS': '0', 'child_set-MAX_NUM_FORMS': '0', 'child_set-0-name': 'child', } formset = ChildFormSet(data, instance=school) self.assertEqual(formset.is_valid(), True) objects = formset.save(commit=False) for obj in objects: obj.mother = mother obj.father = father obj.save() self.assertEqual(school.child_set.count(), 1) class InlineFormsetFactoryTest(TestCase): def test_inline_formset_factory(self): """ These should both work without a problem. """ inlineformset_factory(Parent, Child, fk_name='mother', fields="__all__") inlineformset_factory(Parent, Child, fk_name='father', fields="__all__") def test_exception_on_unspecified_foreign_key(self): """ Child has two ForeignKeys to Parent, so if we don't specify which one to use for the inline formset, we should get an exception. """ six.assertRaisesRegex(self, Exception, " has more than 1 ForeignKey to ", inlineformset_factory, Parent, Child ) def test_fk_name_not_foreign_key_field_from_child(self): """ If we specify fk_name, but it isn't a ForeignKey from the child model to the parent model, we should get an exception. """ self.assertRaises(Exception, "fk_name 'school' is not a ForeignKey to ", inlineformset_factory, Parent, Child, fk_name='school' ) def test_non_foreign_key_field(self): """ If the field specified in fk_name is not a ForeignKey, we should get an exception. """ six.assertRaisesRegex(self, Exception, " has no field named 'test'", inlineformset_factory, Parent, Child, fk_name='test' ) def test_any_iterable_allowed_as_argument_to_exclude(self): # Regression test for #9171. inlineformset_factory( Parent, Child, exclude=['school'], fk_name='mother' ) inlineformset_factory( Parent, Child, exclude=('school',), fk_name='mother' ) @skipUnlessDBFeature('allows_primary_key_0') def test_zero_primary_key(self): # Regression test for #21472 poet = Poet.objects.create(id=0, name='test') poem = poet.poem_set.create(name='test poem') PoemFormSet = inlineformset_factory(Poet, Poem, fields="__all__", extra=0) formset = PoemFormSet(None, instance=poet) self.assertEqual(len(formset.forms), 1)