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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 Child, Parent, Poem, Poet, School
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,
ValueError,
"'inline_formsets.Child' has more than one ForeignKey to 'inline_formsets.Parent'.",
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 <class 'inline_formsets.models.Parent'>",
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, ValueError,
"'inline_formsets.Child' 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_auto_pk_0')
def test_zero_primary_key(self):
# Regression test for #21472
poet = Poet.objects.create(id=0, name='test')
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)
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