django/tests/regressiontests/model_formsets_regress/tests.py

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from django import forms
from django.forms.formsets import BaseFormSet, DELETION_FIELD_NAME
from django.forms.util import ErrorDict, ErrorList
from django.forms.models import modelform_factory, inlineformset_factory, modelformset_factory, BaseModelFormSet
from django.test import TestCase
from models import User, UserSite, Restaurant, Manager, Network, Host
class InlineFormsetTests(TestCase):
def test_formset_over_to_field(self):
"A formset over a ForeignKey with a to_field can be saved. Regression for #10243"
Form = modelform_factory(User)
FormSet = inlineformset_factory(User, UserSite)
# Instantiate the Form and FormSet to prove
# you can create a form with no data
form = Form()
form_set = FormSet(instance=User())
# Now create a new User and UserSite instance
data = {
'serial': u'1',
'username': u'apollo13',
'usersite_set-TOTAL_FORMS': u'1',
'usersite_set-INITIAL_FORMS': u'0',
'usersite_set-MAX_NUM_FORMS': u'0',
'usersite_set-0-data': u'10',
'usersite_set-0-user': u'apollo13'
}
user = User()
form = Form(data)
if form.is_valid():
user = form.save()
else:
self.fail('Errors found on form:%s' % form_set)
form_set = FormSet(data, instance=user)
if form_set.is_valid():
form_set.save()
usersite = UserSite.objects.all().values()
self.assertEqual(usersite[0]['data'], 10)
self.assertEqual(usersite[0]['user_id'], u'apollo13')
else:
self.fail('Errors found on formset:%s' % form_set.errors)
# Now update the UserSite instance
data = {
'usersite_set-TOTAL_FORMS': u'1',
'usersite_set-INITIAL_FORMS': u'1',
'usersite_set-MAX_NUM_FORMS': u'0',
'usersite_set-0-id': unicode(usersite[0]['id']),
'usersite_set-0-data': u'11',
'usersite_set-0-user': u'apollo13'
}
form_set = FormSet(data, instance=user)
if form_set.is_valid():
form_set.save()
usersite = UserSite.objects.all().values()
self.assertEqual(usersite[0]['data'], 11)
self.assertEqual(usersite[0]['user_id'], u'apollo13')
else:
self.fail('Errors found on formset:%s' % form_set.errors)
# Now add a new UserSite instance
data = {
'usersite_set-TOTAL_FORMS': u'2',
'usersite_set-INITIAL_FORMS': u'1',
'usersite_set-MAX_NUM_FORMS': u'0',
'usersite_set-0-id': unicode(usersite[0]['id']),
'usersite_set-0-data': u'11',
'usersite_set-0-user': u'apollo13',
'usersite_set-1-data': u'42',
'usersite_set-1-user': u'apollo13'
}
form_set = FormSet(data, instance=user)
if form_set.is_valid():
form_set.save()
usersite = UserSite.objects.all().values().order_by('data')
self.assertEqual(usersite[0]['data'], 11)
self.assertEqual(usersite[0]['user_id'], u'apollo13')
self.assertEqual(usersite[1]['data'], 42)
self.assertEqual(usersite[1]['user_id'], u'apollo13')
else:
self.fail('Errors found on formset:%s' % form_set.errors)
def test_formset_over_inherited_model(self):
"A formset over a ForeignKey with a to_field can be saved. Regression for #11120"
Form = modelform_factory(Restaurant)
FormSet = inlineformset_factory(Restaurant, Manager)
# Instantiate the Form and FormSet to prove
# you can create a form with no data
form = Form()
form_set = FormSet(instance=Restaurant())
# Now create a new Restaurant and Manager instance
data = {
'name': u"Guido's House of Pasta",
'manager_set-TOTAL_FORMS': u'1',
'manager_set-INITIAL_FORMS': u'0',
'manager_set-MAX_NUM_FORMS': u'0',
'manager_set-0-name': u'Guido Van Rossum'
}
restaurant = User()
form = Form(data)
if form.is_valid():
restaurant = form.save()
else:
self.fail('Errors found on form:%s' % form_set)
form_set = FormSet(data, instance=restaurant)
if form_set.is_valid():
form_set.save()
manager = Manager.objects.all().values()
self.assertEqual(manager[0]['name'], 'Guido Van Rossum')
else:
self.fail('Errors found on formset:%s' % form_set.errors)
# Now update the Manager instance
data = {
'manager_set-TOTAL_FORMS': u'1',
'manager_set-INITIAL_FORMS': u'1',
'manager_set-MAX_NUM_FORMS': u'0',
'manager_set-0-id': unicode(manager[0]['id']),
'manager_set-0-name': u'Terry Gilliam'
}
form_set = FormSet(data, instance=restaurant)
if form_set.is_valid():
form_set.save()
manager = Manager.objects.all().values()
self.assertEqual(manager[0]['name'], 'Terry Gilliam')
else:
self.fail('Errors found on formset:%s' % form_set.errors)
# Now add a new Manager instance
data = {
'manager_set-TOTAL_FORMS': u'2',
'manager_set-INITIAL_FORMS': u'1',
'manager_set-MAX_NUM_FORMS': u'0',
'manager_set-0-id': unicode(manager[0]['id']),
'manager_set-0-name': u'Terry Gilliam',
'manager_set-1-name': u'John Cleese'
}
form_set = FormSet(data, instance=restaurant)
if form_set.is_valid():
form_set.save()
manager = Manager.objects.all().values().order_by('name')
self.assertEqual(manager[0]['name'], 'John Cleese')
self.assertEqual(manager[1]['name'], 'Terry Gilliam')
else:
self.fail('Errors found on formset:%s' % form_set.errors)
def test_formset_with_none_instance(self):
"A formset with instance=None can be created. Regression for #11872"
Form = modelform_factory(User)
FormSet = inlineformset_factory(User, UserSite)
# Instantiate the Form and FormSet to prove
# you can create a formset with an instance of None
form = Form(instance=None)
formset = FormSet(instance=None)
def test_empty_fields_on_modelformset(self):
"No fields passed to modelformset_factory should result in no fields on returned forms except for the id. See #14119."
UserFormSet = modelformset_factory(User, fields=())
formset = UserFormSet()
for form in formset.forms:
self.assertTrue('id' in form.fields)
self.assertEqual(len(form.fields), 1)
def test_save_as_new_with_new_inlines(self):
"""
Existing and new inlines are saved with save_as_new.
Regression for #14938.
"""
efnet = Network.objects.create(name="EFNet")
host1 = Host.objects.create(hostname="irc.he.net", network=efnet)
HostFormSet = inlineformset_factory(Network, Host)
# Add a new host, modify previous host, and save-as-new
data = {
'host_set-TOTAL_FORMS': u'2',
'host_set-INITIAL_FORMS': u'1',
'host_set-MAX_NUM_FORMS': u'0',
'host_set-0-id': unicode(host1.id),
'host_set-0-hostname': u'tranquility.hub.dal.net',
'host_set-1-hostname': u'matrix.de.eu.dal.net'
}
# To save a formset as new, it needs a new hub instance
dalnet = Network.objects.create(name="DALnet")
formset = HostFormSet(data, instance=dalnet, save_as_new=True)
self.assertTrue(formset.is_valid())
formset.save()
self.assertQuerysetEqual(
dalnet.host_set.order_by("hostname"),
["<Host: matrix.de.eu.dal.net>", "<Host: tranquility.hub.dal.net>"]
)
class FormsetTests(TestCase):
def test_error_class(self):
'''
Test the type of Formset and Form error attributes
'''
Formset = modelformset_factory(User)
data = {
'form-TOTAL_FORMS': u'2',
'form-INITIAL_FORMS': u'0',
'form-MAX_NUM_FORMS': u'0',
'form-0-id': '',
'form-0-username': u'apollo13',
'form-0-serial': u'1',
'form-1-id': '',
'form-1-username': u'apollo13',
'form-1-serial': u'2',
}
formset = Formset(data)
# check if the returned error classes are correct
# note: formset.errors returns a list as documented
self.assertTrue(isinstance(formset.errors, list))
self.assertTrue(isinstance(formset.non_form_errors(), ErrorList))
for form in formset.forms:
self.assertTrue(isinstance(form.errors, ErrorDict))
self.assertTrue(isinstance(form.non_field_errors(), ErrorList))
class CustomWidget(forms.CharField):
pass
class UserSiteForm(forms.ModelForm):
class Meta:
model = UserSite
widgets = {'data': CustomWidget}
class Callback(object):
def __init__(self):
self.log = []
def __call__(self, db_field, **kwargs):
self.log.append((db_field, kwargs))
return db_field.formfield(**kwargs)
class FormfieldCallbackTests(TestCase):
"""
Regression for #13095: Using base forms with widgets
defined in Meta should not raise errors.
"""
def test_inlineformset_factory_default(self):
Formset = inlineformset_factory(User, UserSite, form=UserSiteForm)
form = Formset().forms[0]
self.assertTrue(isinstance(form['data'].field.widget, CustomWidget))
def test_modelformset_factory_default(self):
Formset = modelformset_factory(UserSite, form=UserSiteForm)
form = Formset().forms[0]
self.assertTrue(isinstance(form['data'].field.widget, CustomWidget))
def assertCallbackCalled(self, callback):
id_field, user_field, data_field = UserSite._meta.fields
expected_log = [
(id_field, {}),
(user_field, {}),
(data_field, {'widget': CustomWidget}),
]
self.assertEqual(callback.log, expected_log)
def test_inlineformset_custom_callback(self):
callback = Callback()
inlineformset_factory(User, UserSite, form=UserSiteForm,
formfield_callback=callback)
self.assertCallbackCalled(callback)
def test_modelformset_custom_callback(self):
callback = Callback()
modelformset_factory(UserSite, form=UserSiteForm,
formfield_callback=callback)
self.assertCallbackCalled(callback)
class BaseCustomDeleteFormSet(BaseFormSet):
"""
A formset mix-in that lets a form decide if it's to be deleted.
Works for BaseFormSets. Also works for ModelFormSets with #14099 fixed.
form.should_delete() is called. The formset delete field is also suppressed.
"""
def add_fields(self, form, index):
super(BaseCustomDeleteFormSet, self).add_fields(form, index)
self.can_delete = True
if DELETION_FIELD_NAME in form.fields:
del form.fields[DELETION_FIELD_NAME]
def _should_delete_form(self, form):
return hasattr(form, 'should_delete') and form.should_delete()
class FormfieldShouldDeleteFormTests(TestCase):
"""
Regression for #14099: BaseModelFormSet should use ModelFormSet method _should_delete_form
"""
class BaseCustomDeleteModelFormSet(BaseModelFormSet, BaseCustomDeleteFormSet):
""" Model FormSet with CustomDelete MixIn """
class CustomDeleteUserForm(forms.ModelForm):
""" A model form with a 'should_delete' method """
class Meta:
model = User
def should_delete(self):
""" delete form if odd PK """
return self.instance.id % 2 != 0
NormalFormset = modelformset_factory(User, form=CustomDeleteUserForm, can_delete=True)
DeleteFormset = modelformset_factory(User, form=CustomDeleteUserForm, formset=BaseCustomDeleteModelFormSet)
data = {
'form-TOTAL_FORMS': '4',
'form-INITIAL_FORMS': '0',
'form-MAX_NUM_FORMS': '4',
'form-0-username': 'John',
'form-0-serial': '1',
'form-1-username': 'Paul',
'form-1-serial': '2',
'form-2-username': 'George',
'form-2-serial': '3',
'form-3-username': 'Ringo',
'form-3-serial': '5',
}
delete_all_ids = {
'form-0-DELETE': '1',
'form-1-DELETE': '1',
'form-2-DELETE': '1',
'form-3-DELETE': '1',
}
def test_init_database(self):
""" Add test data to database via formset """
formset = self.NormalFormset(self.data)
self.assertTrue(formset.is_valid())
self.assertEqual(len(formset.save()), 4)
def test_no_delete(self):
""" Verify base formset doesn't modify database """
# reload database
self.test_init_database()
# pass standard data dict & see none updated
data = dict(self.data)
data['form-INITIAL_FORMS'] = 4
data.update(dict(
('form-%d-id' % i, user.id)
for i,user in enumerate(User.objects.all())
))
formset = self.NormalFormset(data, queryset=User.objects.all())
self.assertTrue(formset.is_valid())
self.assertEqual(len(formset.save()), 0)
self.assertEqual(len(User.objects.all()), 4)
def test_all_delete(self):
""" Verify base formset honors DELETE field """
# reload database
self.test_init_database()
# create data dict with all fields marked for deletion
data = dict(self.data)
data['form-INITIAL_FORMS'] = 4
data.update(dict(
('form-%d-id' % i, user.id)
for i,user in enumerate(User.objects.all())
))
data.update(self.delete_all_ids)
formset = self.NormalFormset(data, queryset=User.objects.all())
self.assertTrue(formset.is_valid())
self.assertEqual(len(formset.save()), 0)
self.assertEqual(len(User.objects.all()), 0)
def test_custom_delete(self):
""" Verify DeleteFormset ignores DELETE field and uses form method """
# reload database
self.test_init_database()
# Create formset with custom Delete function
# create data dict with all fields marked for deletion
data = dict(self.data)
data['form-INITIAL_FORMS'] = 4
data.update(dict(
('form-%d-id' % i, user.id)
for i,user in enumerate(User.objects.all())
))
data.update(self.delete_all_ids)
formset = self.DeleteFormset(data, queryset=User.objects.all())
# verify two were deleted
self.assertTrue(formset.is_valid())
self.assertEqual(len(formset.save()), 0)
self.assertEqual(len(User.objects.all()), 2)
# verify no "odd" PKs left
odd_ids = [user.id for user in User.objects.all() if user.id % 2]
self.assertEqual(len(odd_ids), 0)