def test_child_updates_without_ids(self):
john = BandMember(name='John Lennon')
beatles = Band(name='The Beatles', members=[
john
])
beatles.save()
john_id = john.id
paul = BandMember(name='Paul McCartney')
beatles.members.add(paul)
BandMembersFormset = childformset_factory(Band, BandMember, extra=3)
band_members_formset = BandMembersFormset({
'form-TOTAL_FORMS': 2,
'form-INITIAL_FORMS': 2,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney', # NB no way to know programmatically that this form corresponds to the 'paul' object
'form-1-id': '',
}, instance=beatles)
self.assertTrue(band_members_formset.is_valid())
band_members_formset.save(commit=False)
self.assertEqual(2, beatles.members.count())
def test_child_updates_without_ids(self):
john = BandMember(name='John Lennon')
beatles = Band(name='The Beatles', members=[
john
])
beatles.save()
john_id = john.id
paul = BandMember(name='Paul McCartney')
beatles.members.add(paul)
BandMembersFormset = childformset_factory(Band, BandMember, extra=3)
band_members_formset = BandMembersFormset({
'form-TOTAL_FORMS': 2,
'form-INITIAL_FORMS': 2,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney', # NB no way to know programmatically that this form corresponds to the 'paul' object
'form-1-id': '',
}, instance=beatles)
self.assertTrue(band_members_formset.is_valid())
band_members_formset.save(commit=False)
self.assertEqual(2, beatles.members.count())
def test_child_updates_without_ids(self):
first_song = Song(name='I Saw Her Standing There')
album = Album(name='Please Please Me', songs=[first_song])
beatles = Band(name='The Beatles', albums=[album])
beatles.save()
first_song_id = first_song.id
second_song = Song(name='Misery')
album.songs.add(second_song)
AlbumsFormset = childformset_factory(Band, Album, form=ClusterForm, extra=3)
albums_formset = AlbumsFormset({
'form-TOTAL_FORMS': 1,
'form-INITIAL_FORMS': 1,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'Please Please Me',
'form-0-id': album.id,
'form-0-songs-TOTAL_FORMS': 2,
'form-0-songs-INITIAL_FORMS': 2,
'form-0-songs-MAX_NUM_FORMS': 1000,
'form-0-songs-0-name': 'I Saw Her Standing There',
'form-0-songs-0-id': first_song_id,
'form-0-songs-1-name': 'Misery',
'form-0-songs-1-id': '',
}, instance=beatles)
self.assertTrue(albums_formset.is_valid())
albums_formset.save(commit=False)
self.assertEqual(2, beatles.albums.first().songs.count())
def test_queryset_filtering(self):
beatles = Band(name='The Beatles',
members=[
BandMember(id=1, name='John Lennon'),
BandMember(id=2, name='Paul McCartney'),
])
self.assertEqual('Paul McCartney', beatles.members.get(id=2).name)
self.assertEqual('Paul McCartney', beatles.members.get(id='2').name)
self.assertEqual(1,
beatles.members.filter(name='Paul McCartney').count())
# also need to be able to filter on foreign fields that return a model instance
# rather than a simple python value
self.assertEqual(2, beatles.members.filter(band=beatles).count())
# and ensure that the comparison is not treating all unsaved instances as identical
rutles = Band(name='The Rutles')
self.assertEqual(0, beatles.members.filter(band=rutles).count())
# and the comparison must be on the model instance's ID where available,
# not by reference
beatles.save()
beatles.members.add(
BandMember(id=3, name='George Harrison')
) # modify the relation so that we're not to a plain database-backed queryset
also_beatles = Band.objects.get(id=beatles.id)
self.assertEqual(3, beatles.members.filter(band=also_beatles).count())
def test_copy_child_relations_between_saved_objects(self):
# This test copies child relations between two saved objects
# This also shouldn't commit the new child objects to the database
self.beatles.save()
john = self.beatles.members.get(name='John Lennon')
paul = self.beatles.members.get(name='Paul McCartney')
beatles_clone = Band(name='The Beatles 2020 comeback')
beatles_clone.save()
child_object_mapping = self.beatles.copy_child_relation(
'members', beatles_clone)
new_john = beatles_clone.members.get(name='John Lennon')
new_paul = beatles_clone.members.get(name='Paul McCartney')
self.assertIsNone(new_john.pk)
self.assertIsNone(new_paul.pk)
self.assertEqual(new_john.band, beatles_clone)
self.assertEqual(new_paul.band, beatles_clone)
self.assertEqual(
child_object_mapping, {
(band_members_rel, john.pk): new_john,
(band_members_rel, paul.pk): new_paul,
})
def test_commit(self):
# The commit parameter will instruct the method to save the child objects straight away
self.beatles.save()
john = self.beatles.members.get(name='John Lennon')
paul = self.beatles.members.get(name='Paul McCartney')
beatles_clone = Band(name='The Beatles 2020 comeback')
beatles_clone.save()
child_object_mapping = self.beatles.copy_child_relation('members',
beatles_clone,
commit=True)
new_john = beatles_clone.members.get(name='John Lennon')
new_paul = beatles_clone.members.get(name='Paul McCartney')
self.assertIsNotNone(new_john.pk)
self.assertIsNotNone(new_paul.pk)
self.assertEqual(new_john.band, beatles_clone)
self.assertEqual(new_paul.band, beatles_clone)
self.assertEqual(
child_object_mapping, {
(band_members_rel, john.pk): new_john,
(band_members_rel, paul.pk): new_paul,
})
def test_append(self):
# But you can specify append=True, which appends them to the existing list
self.beatles.save()
john = self.beatles.members.get(name='John Lennon')
paul = self.beatles.members.get(name='Paul McCartney')
beatles_clone = Band(name='The Beatles 2020 comeback')
beatles_clone.members.add(BandMember(name='Julian Lennon'))
beatles_clone.save()
self.assertTrue(
beatles_clone.members.filter(name='Julian Lennon').exists())
child_object_mapping = self.beatles.copy_child_relation('members',
beatles_clone,
append=True)
self.assertTrue(
beatles_clone.members.filter(name='Julian Lennon').exists())
new_john = beatles_clone.members.get(name='John Lennon')
new_paul = beatles_clone.members.get(name='Paul McCartney')
self.assertIsNone(new_john.pk)
self.assertIsNone(new_paul.pk)
self.assertEqual(new_john.band, beatles_clone)
self.assertEqual(new_paul.band, beatles_clone)
self.assertEqual(
child_object_mapping, {
(band_members_rel, john.pk): new_john,
(band_members_rel, paul.pk): new_paul,
})
def test_serialize(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
expected = {'pk': None, 'albums': [], 'name': 'The Beatles', 'members': [{'pk': None, 'name': 'John Lennon', 'band': None}, {'pk': None, 'name': 'Paul McCartney', 'band': None}]}
self.assertEqual(expected, beatles.serializable_data())
def test_serialize(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
expected = {'pk': None, 'albums': [], 'name': 'The Beatles', 'members': [{'pk': None, 'name': 'John Lennon', 'band': None}, {'pk': None, 'name': 'Paul McCartney', 'band': None}]}
self.assertEqual(expected, beatles.serializable_data())
def test_incoming_form_data(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
beatles = Band(name='The Beatles', albums=[
Album(name='Please Please Me', songs=[
Song(name='I Saw Her Standing There')
]),
])
form = BandForm({
'name': 'The Beatles',
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': 'Please Please Me',
'albums-0-id': '',
'albums-0-ORDER': 1,
'albums-0-songs-TOTAL_FORMS': 2,
'albums-0-songs-INITIAL_FORMS': 1,
'albums-0-songs-MAX_NUM_FORMS': 1000,
'albums-0-songs-0-name': 'I Saw Her Standing There',
'albums-0-songs-0-DELETE': 'albums-0-songs-0-DELETE',
'albums-0-songs-0-id': '',
'albums-0-songs-1-name': 'Misery',
'albums-0-songs-1-id': '',
}, instance=beatles)
self.assertTrue(form.is_valid())
result = form.save(commit=False)
self.assertEqual(result, beatles)
self.assertEqual(1, beatles.albums.count())
self.assertEqual('Please Please Me', beatles.albums.first().name)
self.assertEqual(1, beatles.albums.first().songs.all().count())
self.assertEqual('Misery', beatles.albums.first().songs.first().name)
# should not exist in the database yet
self.assertFalse(Album.objects.filter(name='Please Please Me').exists())
self.assertFalse(Song.objects.filter(name='Misery').exists())
beatles.save()
# this should create database entries
self.assertTrue(Band.objects.filter(name='The Beatles').exists())
self.assertTrue(Album.objects.filter(name='Please Please Me').exists())
self.assertTrue(Song.objects.filter(name='Misery').exists())
self.assertFalse(Song.objects.filter(name='I Saw Her Standing There').exists())
def test_incoming_form_data(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
beatles = Band(name='The Beatles', albums=[
Album(name='Please Please Me', songs=[
Song(name='I Saw Her Standing There')
]),
])
form = BandForm({
'name': 'The Beatles',
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': 'Please Please Me',
'albums-0-id': '',
'albums-0-ORDER': 1,
'albums-0-songs-TOTAL_FORMS': 2,
'albums-0-songs-INITIAL_FORMS': 1,
'albums-0-songs-MAX_NUM_FORMS': 1000,
'albums-0-songs-0-name': 'I Saw Her Standing There',
'albums-0-songs-0-DELETE': 'albums-0-songs-0-DELETE',
'albums-0-songs-0-id': '',
'albums-0-songs-1-name': 'Misery',
'albums-0-songs-1-id': '',
}, instance=beatles)
self.assertTrue(form.is_valid())
result = form.save(commit=False)
self.assertEqual(result, beatles)
self.assertEqual(1, beatles.albums.count())
self.assertEqual('Please Please Me', beatles.albums.first().name)
self.assertEqual(1, beatles.albums.first().songs.all().count())
self.assertEqual('Misery', beatles.albums.first().songs.first().name)
# should not exist in the database yet
self.assertFalse(Album.objects.filter(name='Please Please Me').exists())
self.assertFalse(Song.objects.filter(name='Misery').exists())
beatles.save()
# this should create database entries
self.assertTrue(Band.objects.filter(name='The Beatles').exists())
self.assertTrue(Album.objects.filter(name='Please Please Me').exists())
self.assertTrue(Song.objects.filter(name='Misery').exists())
self.assertFalse(Song.objects.filter(name='I Saw Her Standing There').exists())
def test_save_commit_false(self):
first_song = Song(name='I Saw Her Standing There')
second_song = Song(name='Mystery')
album = Album(name='Please Please Me', songs=[first_song, second_song])
beatles = Band(name='The Beatles', albums=[album])
beatles.save()
first_song_id, second_song_id = first_song.id, second_song.id
AlbumsFormset = childformset_factory(Band, Album, form=ClusterForm, extra=3)
albums_formset = AlbumsFormset({
'form-TOTAL_FORMS': 1,
'form-INITIAL_FORMS': 1,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'Please Please Me',
'form-0-id': album.id,
'form-0-songs-TOTAL_FORMS': 4,
'form-0-songs-INITIAL_FORMS': 2,
'form-0-songs-MAX_NUM_FORMS': 1000,
'form-0-songs-0-name': 'I Saw Her Standing There',
'form-0-songs-0-DELETE': 'form-0-songs-0-DELETE',
'form-0-songs-0-id': first_song_id,
'form-0-songs-1-name': 'Misery', # changing data of an existing record
'form-0-songs-1-id': second_song_id,
'form-0-songs-2-name': '',
'form-0-songs-2-id': '',
'form-0-songs-3-name': 'Chains', # adding a record
'form-0-songs-3-id': '',
}, instance=beatles)
self.assertTrue(albums_formset.is_valid())
updated_albums = albums_formset.save(commit=False)
# updated_members should only include the items that have been changed and not deleted
self.assertEqual(1, len(updated_albums))
self.assertEqual('Please Please Me', updated_albums[0].name)
self.assertEqual(2, updated_albums[0].songs.count())
self.assertEqual('Misery', updated_albums[0].songs.first().name)
self.assertEqual(second_song_id, updated_albums[0].songs.first().id)
self.assertEqual('Chains', updated_albums[0].songs.all()[1].name)
self.assertEqual(None, updated_albums[0].songs.all()[1].id)
# Changes should not be committed to the db yet
self.assertTrue(Song.objects.filter(name='I Saw Her Standing There', id=first_song_id).exists())
self.assertEqual('Mystery', Song.objects.get(id=second_song_id).name)
self.assertFalse(Song.objects.filter(name='Chains').exists())
beatles.albums.first().songs.commit()
# this should create/update/delete database entries
self.assertEqual('Misery', Song.objects.get(id=second_song_id).name)
self.assertTrue(Song.objects.filter(name='Chains').exists())
self.assertFalse(Song.objects.filter(name='I Saw Her Standing There').exists())
def test_can_only_commit_on_saved_parent(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
self.assertRaises(IntegrityError, lambda: beatles.members.commit())
beatles.save()
beatles.members.commit()
def test_can_only_commit_on_saved_parent(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
self.assertRaises(IntegrityError, lambda: beatles.members.commit())
beatles.save()
beatles.members.commit()
def test_save_commit_false(self):
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
ringo = BandMember(name='Richard Starkey')
beatles = Band(name='The Beatles', members=[john, paul, ringo])
beatles.save()
john_id, paul_id, ringo_id = john.id, paul.id, ringo.id
BandMembersFormset = childformset_factory(Band, BandMember, extra=3)
band_members_formset = BandMembersFormset(
{
'form-TOTAL_FORMS': 5,
'form-INITIAL_FORMS': 3,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-DELETE': 'form-0-DELETE',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney',
'form-1-id': paul_id,
'form-2-name':
'Ringo Starr', # changing data of an existing record
'form-2-id': ringo_id,
'form-3-name': '',
'form-3-id': '',
'form-4-name': 'George Harrison', # adding a record
'form-4-id': '',
},
instance=beatles)
self.assertTrue(band_members_formset.is_valid())
updated_members = band_members_formset.save(commit=False)
# updated_members should only include the items that have been changed and not deleted
self.assertEqual(2, len(updated_members))
self.assertEqual('Ringo Starr', updated_members[0].name)
self.assertEqual(ringo_id, updated_members[0].id)
self.assertEqual('George Harrison', updated_members[1].name)
self.assertEqual(None, updated_members[1].id)
# Changes should not be committed to the db yet
self.assertTrue(
BandMember.objects.filter(name='John Lennon', id=john_id).exists())
self.assertEqual('Richard Starkey',
BandMember.objects.get(id=ringo_id).name)
self.assertFalse(
BandMember.objects.filter(name='George Harrison').exists())
beatles.members.commit()
# this should create/update/delete database entries
self.assertEqual('Ringo Starr',
BandMember.objects.get(id=ringo_id).name)
self.assertTrue(
BandMember.objects.filter(name='George Harrison').exists())
self.assertFalse(
BandMember.objects.filter(name='John Lennon').exists())
def test_saved_items(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
first_song = Song(name='I Saw Her Standing There')
second_song = Song(name='Misery')
album = Album(name='Please Please Me', songs=[first_song, second_song])
beatles = Band(name='The Beatles', albums=[album])
beatles.save()
self.assertTrue(album.id)
self.assertTrue(first_song.id)
self.assertTrue(second_song.id)
form = BandForm({
'name': 'The Beatles',
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 1,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': album.name,
'albums-0-id': album.id,
'albums-0-ORDER': 1,
'albums-0-songs-TOTAL_FORMS': 4,
'albums-0-songs-INITIAL_FORMS': 2,
'albums-0-songs-MAX_NUM_FORMS': 1000,
'albums-0-songs-0-name': first_song.name,
'albums-0-songs-0-DELETE': 'albums-0-songs-0-DELETE',
'albums-0-songs-0-id': first_song.id,
'albums-0-songs-1-name': second_song.name,
'albums-0-songs-1-id': second_song.id,
'albums-0-songs-2-name': 'Anna',
'albums-0-songs-2-id': '',
'albums-0-songs-3-name': '',
'albums-0-songs-3-id': '',
}, instance=beatles)
self.assertTrue(form.is_valid())
form.save()
self.assertTrue(Song.objects.filter(name='Anna').exists())
self.assertTrue(Song.objects.filter(name='Misery').exists())
self.assertFalse(Song.objects.filter(name='I Saw Her Standing There').exists())
def test_save_commit_false(self):
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
ringo = BandMember(name='Richard Starkey')
beatles = Band(name='The Beatles', members=[
john, paul, ringo
])
beatles.save()
john_id, paul_id, ringo_id = john.id, paul.id, ringo.id
BandMembersFormset = childformset_factory(Band, BandMember, extra=3)
band_members_formset = BandMembersFormset({
'form-TOTAL_FORMS': 5,
'form-INITIAL_FORMS': 3,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-DELETE': 'form-0-DELETE',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney',
'form-1-id': paul_id,
'form-2-name': 'Ringo Starr', # changing data of an existing record
'form-2-id': ringo_id,
'form-3-name': '',
'form-3-id': '',
'form-4-name': 'George Harrison', # adding a record
'form-4-id': '',
}, instance=beatles)
self.assertTrue(band_members_formset.is_valid())
updated_members = band_members_formset.save(commit=False)
# updated_members should only include the items that have been changed and not deleted
self.assertEqual(2, len(updated_members))
self.assertEqual('Ringo Starr', updated_members[0].name)
self.assertEqual(ringo_id, updated_members[0].id)
self.assertEqual('George Harrison', updated_members[1].name)
self.assertEqual(None, updated_members[1].id)
# Changes should not be committed to the db yet
self.assertTrue(BandMember.objects.filter(name='John Lennon', id=john_id).exists())
self.assertEqual('Richard Starkey', BandMember.objects.get(id=ringo_id).name)
self.assertFalse(BandMember.objects.filter(name='George Harrison').exists())
beatles.members.commit()
# this should create/update/delete database entries
self.assertEqual('Ringo Starr', BandMember.objects.get(id=ringo_id).name)
self.assertTrue(BandMember.objects.filter(name='George Harrison').exists())
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
def test_saved_items(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
first_song = Song(name='I Saw Her Standing There')
second_song = Song(name='Misery')
album = Album(name='Please Please Me', songs=[first_song, second_song])
beatles = Band(name='The Beatles', albums=[album])
beatles.save()
self.assertTrue(album.id)
self.assertTrue(first_song.id)
self.assertTrue(second_song.id)
form = BandForm({
'name': 'The Beatles',
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 1,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': album.name,
'albums-0-id': album.id,
'albums-0-ORDER': 1,
'albums-0-songs-TOTAL_FORMS': 4,
'albums-0-songs-INITIAL_FORMS': 2,
'albums-0-songs-MAX_NUM_FORMS': 1000,
'albums-0-songs-0-name': first_song.name,
'albums-0-songs-0-DELETE': 'albums-0-songs-0-DELETE',
'albums-0-songs-0-id': first_song.id,
'albums-0-songs-1-name': second_song.name,
'albums-0-songs-1-id': second_song.id,
'albums-0-songs-2-name': 'Anna',
'albums-0-songs-2-id': '',
'albums-0-songs-3-name': '',
'albums-0-songs-3-id': '',
}, instance=beatles)
self.assertTrue(form.is_valid())
form.save()
self.assertTrue(Song.objects.filter(name='Anna').exists())
self.assertTrue(Song.objects.filter(name='Misery').exists())
self.assertFalse(Song.objects.filter(name='I Saw Her Standing There').exists())
def setUp(self):
self.beatles = Band(name='The Beatles',
members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
],
albums=[
Album(name='Please Please Me', sort_order=1),
Album(name='With The Beatles', sort_order=2),
Album(name='Abbey Road', sort_order=3),
])
def test_ignore_validation_on_deleted_items(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
please_please_me = Album(name='Please Please Me', release_date=datetime.date(1963, 3, 22))
beatles = Band(name='The Beatles', albums=[please_please_me])
beatles.save()
form = BandForm({
'name': "The Beatles",
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 1,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': 'With The Beatles',
'albums-0-release_date': '1963-02-31', # invalid date
'albums-0-id': please_please_me.id,
'albums-0-ORDER': 1,
}, instance=beatles)
self.assertFalse(form.is_valid())
form = BandForm({
'name': "The Beatles",
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 1,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': 'With The Beatles',
'albums-0-release_date': '1963-02-31', # invalid date
'albums-0-id': please_please_me.id,
'albums-0-ORDER': 1,
'albums-0-DELETE': 'albums-0-DELETE',
}, instance=beatles)
self.assertTrue(form.is_valid())
form.save(commit=False)
self.assertEqual(0, beatles.albums.count())
self.assertEqual(1, Band.objects.get(id=beatles.id).albums.count())
beatles.save()
self.assertEqual(0, Band.objects.get(id=beatles.id).albums.count())
def test_saved_items_with_non_db_relation(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
first_song = Song(name='I Saw Her Standing There')
second_song = Song(name='Misery')
album = Album(name='Please Please Me', songs=[first_song, second_song])
beatles = Band(name='The Beatles', albums=[album])
beatles.save()
# pack and unpack the record so that we're working with a non-db-backed queryset
new_beatles = Band.from_json(beatles.to_json())
form = BandForm({
'name': 'The Beatles',
'members-TOTAL_FORMS': 0,
'members-INITIAL_FORMS': 0,
'members-MAX_NUM_FORMS': 1000,
'albums-TOTAL_FORMS': 1,
'albums-INITIAL_FORMS': 1,
'albums-MAX_NUM_FORMS': 1000,
'albums-0-name': album.name,
'albums-0-id': album.id,
'albums-0-ORDER': 1,
'albums-0-songs-TOTAL_FORMS': 4,
'albums-0-songs-INITIAL_FORMS': 2,
'albums-0-songs-MAX_NUM_FORMS': 1000,
'albums-0-songs-0-name': first_song.name,
'albums-0-songs-0-DELETE': 'albums-0-songs-0-DELETE',
'albums-0-songs-0-id': first_song.id,
'albums-0-songs-1-name': second_song.name,
'albums-0-songs-1-id': second_song.id,
'albums-0-songs-2-name': 'Anna',
'albums-0-songs-2-id': '',
'albums-0-songs-3-name': '',
'albums-0-songs-3-id': '',
}, instance=new_beatles)
self.assertTrue(form.is_valid())
form.save()
self.assertTrue(Song.objects.filter(name='Anna').exists())
self.assertFalse(Song.objects.filter(name='I Saw Her Standing There').exists())
def test_serialize_json_with_dates(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
], albums=[
Album(name='Rubber Soul', release_date=datetime.date(1965, 12, 3))
])
beatles_json = beatles.to_json()
self.assertTrue("John Lennon" in beatles_json)
self.assertTrue("1965-12-03" in beatles_json)
unpacked_beatles = Band.from_json(beatles_json)
self.assertEqual(datetime.date(1965, 12, 3), unpacked_beatles.albums.all()[0].release_date)
def test_serialize_json_with_dates(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
], albums=[
Album(name='Rubber Soul', release_date=datetime.date(1965, 12, 3))
])
beatles_json = beatles.to_json()
self.assertTrue("John Lennon" in beatles_json)
self.assertTrue("1965-12-03" in beatles_json)
unpacked_beatles = Band.from_json(beatles_json)
self.assertEqual(datetime.date(1965, 12, 3), unpacked_beatles.albums.all()[0].release_date)
def test_incoming_form_data(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
beatles = Band(name='The Beatles', members=[
BandMember(name='George Harrison'),
])
form = BandForm({
'name': "The Beatles",
'members-TOTAL_FORMS': 4,
'members-INITIAL_FORMS': 1,
'members-MAX_NUM_FORMS': 1000,
'members-0-name': 'George Harrison',
'members-0-DELETE': 'members-0-DELETE',
'members-0-id': '',
'members-1-name': 'John Lennon',
'members-1-id': '',
'members-2-name': 'Paul McCartney',
'members-2-id': '',
'members-3-name': '',
'members-3-id': '',
'albums-TOTAL_FORMS': 0,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
}, instance=beatles)
self.assertTrue(form.is_valid())
result = form.save(commit=False)
self.assertEqual(result, beatles)
self.assertEqual(2, beatles.members.count())
self.assertEqual('John Lennon', beatles.members.all()[0].name)
# should not exist in the database yet
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
beatles.save()
# this should create database entries
self.assertTrue(Band.objects.filter(name='The Beatles').exists())
self.assertTrue(BandMember.objects.filter(name='John Lennon').exists())
def test_incoming_form_data(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
beatles = Band(name='The Beatles', members=[
BandMember(name='George Harrison'),
])
form = BandForm({
'name': "The Beatles",
'members-TOTAL_FORMS': 4,
'members-INITIAL_FORMS': 1,
'members-MAX_NUM_FORMS': 1000,
'members-0-name': 'George Harrison',
'members-0-DELETE': 'members-0-DELETE',
'members-0-id': '',
'members-1-name': 'John Lennon',
'members-1-id': '',
'members-2-name': 'Paul McCartney',
'members-2-id': '',
'members-3-name': '',
'members-3-id': '',
'albums-TOTAL_FORMS': 0,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
}, instance=beatles)
self.assertTrue(form.is_valid())
result = form.save(commit=False)
self.assertEqual(result, beatles)
self.assertEqual(2, beatles.members.count())
self.assertEqual('John Lennon', beatles.members.all()[0].name)
# should not exist in the database yet
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
beatles.save()
# this should create database entries
self.assertTrue(Band.objects.filter(name='The Beatles').exists())
self.assertTrue(BandMember.objects.filter(name='John Lennon').exists())
def test_copy_child_relations_from_saved_to_unsaved_object(self):
# This test clones the beatles from a previously saved band/child objects.
# The only difference here is we can return the old IDs in the mapping.
self.beatles.save()
john = self.beatles.members.get(name='John Lennon')
paul = self.beatles.members.get(name='Paul McCartney')
beatles_clone = Band(name='The Beatles 2020 comeback')
child_object_mapping = self.beatles.copy_child_relation(
'members', beatles_clone)
new_john = beatles_clone.members.get(name='John Lennon')
new_paul = beatles_clone.members.get(name='Paul McCartney')
self.assertIsNone(new_john.pk)
self.assertIsNone(new_paul.pk)
self.assertEqual(new_john.band, beatles_clone)
self.assertEqual(new_paul.band, beatles_clone)
# The objects are saved in the source, so we can give each item it's own entry in the mapping
self.assertEqual(
child_object_mapping, {
(band_members_rel, john.pk): new_john,
(band_members_rel, paul.pk): new_paul,
})
def test_related_manager_assignment_ops(self):
beatles = Band(name='The Beatles')
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
beatles.members.add(john)
self.assertEqual(1, beatles.members.count())
beatles.members.add(paul)
self.assertEqual(2, beatles.members.count())
# ensure that duplicates are filtered
beatles.members.add(paul)
self.assertEqual(2, beatles.members.count())
beatles.members.remove(john)
self.assertEqual(1, beatles.members.count())
self.assertEqual(paul, beatles.members.all()[0])
george = beatles.members.create(name='George Harrison')
self.assertEqual(2, beatles.members.count())
self.assertEqual('George Harrison', george.name)
beatles.members.set([john])
self.assertEqual(1, beatles.members.count())
self.assertEqual(john, beatles.members.all()[0])
def test_incoming_formset_data(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='George Harrison'),
])
band_members_formset = self.BandMembersFormset({
'form-TOTAL_FORMS': 3,
'form-INITIAL_FORMS': 1,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-id': '',
'form-1-name': 'Paul McCartney',
'form-1-id': '',
'form-2-name': '',
'form-2-id': '',
}, queryset=beatles.members.all())
self.assertTrue(band_members_formset.is_valid())
members = band_members_formset.save(commit=False)
self.assertEqual(2, len(members))
self.assertEqual('John Lennon', members[0].name)
# should not exist in the database yet
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
def test_copy_all_child_relations_saved(self):
self.beatles.save()
john = self.beatles.members.get(name='John Lennon')
paul = self.beatles.members.get(name='Paul McCartney')
album_1 = self.beatles.albums.get(sort_order=1)
album_2 = self.beatles.albums.get(sort_order=2)
album_3 = self.beatles.albums.get(sort_order=3)
beatles_clone = Band(name='The Beatles 2020 comeback')
child_object_mapping = self.beatles.copy_all_child_relations(
beatles_clone)
new_john = beatles_clone.members.get(name='John Lennon')
new_paul = beatles_clone.members.get(name='Paul McCartney')
new_album_1 = beatles_clone.albums.get(sort_order=1)
new_album_2 = beatles_clone.albums.get(sort_order=2)
new_album_3 = beatles_clone.albums.get(sort_order=3)
self.assertEqual(
child_object_mapping, {
(band_members_rel, john.pk): new_john,
(band_members_rel, paul.pk): new_paul,
(band_albums_rel, album_1.pk): new_album_1,
(band_albums_rel, album_2.pk): new_album_2,
(band_albums_rel, album_3.pk): new_album_3,
})
def test_deserialize_with_sort_order(self):
beatles = Band.from_json('{"pk": null, "albums": [{"pk": null, "name": "With The Beatles", "sort_order": 2}, {"pk": null, "name": "Please Please Me", "sort_order": 1}], "name": "The Beatles", "members": []}')
self.assertEqual(2, beatles.albums.count())
# Make sure the albums were ordered correctly
self.assertEqual("Please Please Me", beatles.albums.all()[0].name)
self.assertEqual("With The Beatles", beatles.albums.all()[1].name)
def test_deserialize(self):
beatles = Band.from_serializable_data({
'pk': 9,
'albums': [],
'name': 'The Beatles',
'members': [
{'pk': None, 'name': 'John Lennon', 'band': None},
{'pk': None, 'name': 'Paul McCartney', 'band': None},
]
})
self.assertEqual(9, beatles.id)
self.assertEqual('The Beatles', beatles.name)
self.assertEqual(2, beatles.members.count())
self.assertEqual(BandMember, beatles.members.all()[0].__class__)
authors = {}
categories = {}
for ii in range(1, 6):
authors[ii] = Author.objects.create(name="Author " + str(ii))
categories[ii] = Category.objects.create(name="Category " + str(ii))
article = Article.from_serializable_data({
'pk': 1,
'title': 'Article Title 1',
'authors': [authors[1].pk, authors[2].pk],
'categories': [categories[2].pk, categories[3].pk, categories[4].pk]
})
self.assertEqual(article.id, 1)
self.assertEqual(article.title, 'Article Title 1')
self.assertEqual(article.authors.count(), 2)
self.assertEqual([author.name for author in article.authors.all()],
['Author 1', 'Author 2'])
self.assertEqual(article.categories.count(), 3)
def test_can_pass_child_relations_as_constructor_kwargs(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
self.assertEqual(2, beatles.members.count())
self.assertEqual(beatles, beatles.members.all()[0].band)
def test_deserialize_with_sort_order(self):
beatles = Band.from_json('{"pk": null, "albums": [{"pk": null, "name": "With The Beatles", "sort_order": 2}, {"pk": null, "name": "Please Please Me", "sort_order": 1}], "name": "The Beatles", "members": []}')
self.assertEqual(2, beatles.albums.count())
# Make sure the albums were ordered correctly
self.assertEqual("Please Please Me", beatles.albums.all()[0].name)
self.assertEqual("With The Beatles", beatles.albums.all()[1].name)
def test_append(self):
beatles_clone = Band(name='The Beatles 2020 comeback')
beatles_clone.members.add(BandMember(name='Julian Lennon'))
self.assertTrue(
beatles_clone.members.filter(name='Julian Lennon').exists())
child_object_mapping = self.beatles.copy_all_child_relations(
beatles_clone, append=True)
self.assertTrue(
beatles_clone.members.filter(name='Julian Lennon').exists())
new_john = beatles_clone.members.get(name='John Lennon')
new_paul = beatles_clone.members.get(name='Paul McCartney')
new_album_1 = beatles_clone.albums.get(sort_order=1)
new_album_2 = beatles_clone.albums.get(sort_order=2)
new_album_3 = beatles_clone.albums.get(sort_order=3)
self.assertIsNone(new_john.pk)
self.assertIsNone(new_paul.pk)
self.assertEqual(new_john.band, beatles_clone)
self.assertEqual(new_paul.band, beatles_clone)
self.assertEqual(
child_object_mapping, {
(band_members_rel, None): [new_john, new_paul],
(band_albums_rel, None):
[new_album_1, new_album_2, new_album_3],
})
def test_saving_formset_preserves_order(self):
AlbumsFormset = childformset_factory(Band,
Album,
extra=3,
can_order=True)
beatles = Band(name='The Beatles')
albums_formset = AlbumsFormset(
{
'form-TOTAL_FORMS': 2,
'form-INITIAL_FORMS': 0,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'With The Beatles',
'form-0-id': '',
'form-0-ORDER': '2',
'form-1-name': 'Please Please Me',
'form-1-id': '',
'form-1-ORDER': '1',
},
instance=beatles)
self.assertTrue(albums_formset.is_valid())
albums_formset.save(commit=False)
album_names = [album.name for album in beatles.albums.all()]
self.assertEqual(['Please Please Me', 'With The Beatles'], album_names)
def test_save_commit_false(self):
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
ringo = BandMember(name='Richard Starkey')
beatles = Band(name='The Beatles', members=[
john, paul, ringo
])
beatles.save()
john_id, paul_id, ringo_id = john.id, paul.id, ringo.id
self.assertTrue(john_id)
self.assertTrue(paul_id)
band_members_formset = self.BandMembersFormset({
'form-TOTAL_FORMS': 5,
'form-INITIAL_FORMS': 3,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-DELETE': 'form-0-DELETE',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney',
'form-1-id': paul_id,
'form-2-name': 'Ringo Starr', # changing data of an existing record
'form-2-id': ringo_id,
'form-3-name': '',
'form-3-id': '',
'form-4-name': 'George Harrison', # Adding a record
'form-4-id': '',
}, queryset=beatles.members.all())
self.assertTrue(band_members_formset.is_valid())
updated_members = band_members_formset.save(commit=False)
self.assertEqual(2, len(updated_members))
self.assertEqual('Ringo Starr', updated_members[0].name)
self.assertEqual(ringo_id, updated_members[0].id)
# should not be updated in the db yet
self.assertEqual('Richard Starkey', BandMember.objects.get(id=ringo_id).name)
self.assertEqual('George Harrison', updated_members[1].name)
self.assertFalse(updated_members[1].id) # no ID yet
def test_can_create_cluster(self):
beatles = Band(name='The Beatles')
self.assertEqual(0, beatles.members.count())
beatles.members = [
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
]
# we should be able to query this relation using (some) queryset methods
self.assertEqual(2, beatles.members.count())
self.assertEqual('John Lennon', beatles.members.all()[0].name)
self.assertEqual('Paul McCartney', beatles.members.filter(name='Paul McCartney')[0].name)
self.assertEqual('Paul McCartney', beatles.members.get(name='Paul McCartney').name)
self.assertRaises(BandMember.DoesNotExist, lambda: beatles.members.get(name='Reginald Dwight'))
self.assertRaises(BandMember.MultipleObjectsReturned, lambda: beatles.members.get())
self.assertEqual([('Paul McCartney',)], beatles.members.filter(name='Paul McCartney').values_list('name'))
self.assertEqual(['Paul McCartney'], beatles.members.filter(name='Paul McCartney').values_list('name', flat=True))
# quick-and-dirty check that we can invoke values_list with empty args list
beatles.members.filter(name='Paul McCartney').values_list()
self.assertTrue(beatles.members.filter(name='Paul McCartney').exists())
self.assertFalse(beatles.members.filter(name='Reginald Dwight').exists())
self.assertEqual('John Lennon', beatles.members.first().name)
self.assertEqual('Paul McCartney', beatles.members.last().name)
self.assertTrue('John Lennon', beatles.members.order_by('name').first())
self.assertTrue('Paul McCartney', beatles.members.order_by('-name').first())
# these should not exist in the database yet
self.assertFalse(Band.objects.filter(name='The Beatles').exists())
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
beatles.save()
# this should create database entries
self.assertTrue(Band.objects.filter(name='The Beatles').exists())
self.assertTrue(BandMember.objects.filter(name='John Lennon').exists())
john_lennon = BandMember.objects.get(name='John Lennon')
beatles.members = [john_lennon]
# reassigning should take effect on the in-memory record
self.assertEqual(1, beatles.members.count())
# but not the database
self.assertEqual(2, Band.objects.get(name='The Beatles').members.count())
beatles.save()
# now updated in the database
self.assertEqual(1, Band.objects.get(name='The Beatles').members.count())
self.assertEqual(1, BandMember.objects.filter(name='John Lennon').count())
# removed member should be deleted from the db entirely
self.assertEqual(0, BandMember.objects.filter(name='Paul McCartney').count())
# queries on beatles.members should now revert to SQL
self.assertTrue(beatles.members.extra(where=["tests_bandmember.name='John Lennon'"]).exists())
def test_save_commit_false(self):
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
ringo = BandMember(name='Richard Starkey')
beatles = Band(name='The Beatles', members=[
john, paul, ringo
])
beatles.save()
john_id, paul_id, ringo_id = john.id, paul.id, ringo.id
self.assertTrue(john_id)
self.assertTrue(paul_id)
band_members_formset = self.BandMembersFormset({
'form-TOTAL_FORMS': 5,
'form-INITIAL_FORMS': 3,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-DELETE': 'form-0-DELETE',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney',
'form-1-id': paul_id,
'form-2-name': 'Ringo Starr', # changing data of an existing record
'form-2-id': ringo_id,
'form-3-name': '',
'form-3-id': '',
'form-4-name': 'George Harrison', # Adding a record
'form-4-id': '',
}, queryset=beatles.members.all())
self.assertTrue(band_members_formset.is_valid())
updated_members = band_members_formset.save(commit=False)
self.assertEqual(2, len(updated_members))
self.assertEqual('Ringo Starr', updated_members[0].name)
self.assertEqual(ringo_id, updated_members[0].id)
# should not be updated in the db yet
self.assertEqual('Richard Starkey', BandMember.objects.get(id=ringo_id).name)
self.assertEqual('George Harrison', updated_members[1].name)
self.assertFalse(updated_members[1].id) # no ID yet
def test_queryset_exclude_filtering(self):
beatles = Band(name='The Beatles', members=[
BandMember(id=1, name='John Lennon'),
BandMember(id=2, name='Paul McCartney'),
])
self.assertEqual(1, beatles.members.exclude(name='Paul McCartney').count())
self.assertEqual('John Lennon', beatles.members.exclude(name='Paul McCartney').first().name)
def test_deserialize_json(self):
beatles = Band.from_json(
'{"pk": 9, "albums": [], "name": "The Beatles", "members": [{"pk": null, "name": "John Lennon", "band": null}, {"pk": null, "name": "Paul McCartney", "band": null}]}'
)
self.assertEqual(9, beatles.id)
self.assertEqual('The Beatles', beatles.name)
self.assertEqual(2, beatles.members.count())
self.assertEqual(BandMember, beatles.members.all()[0].__class__)
def test_saved_items(self):
class BandForm(ClusterForm):
class Meta:
model = Band
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
beatles.save()
member0, member1 = beatles.members.all()
self.assertTrue(member0.id)
self.assertTrue(member1.id)
form = BandForm({
'name': "The New Beatles",
'members-TOTAL_FORMS': 4,
'members-INITIAL_FORMS': 2,
'members-MAX_NUM_FORMS': 1000,
'members-0-name': member0.name,
'members-0-DELETE': 'members-0-DELETE',
'members-0-id': member0.id,
'members-1-name': member1.name,
'members-1-id': member1.id,
'members-2-name': 'George Harrison',
'members-2-id': '',
'members-3-name': '',
'members-3-id': '',
'albums-TOTAL_FORMS': 0,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
}, instance=beatles)
self.assertTrue(form.is_valid())
form.save()
new_beatles = Band.objects.get(id=beatles.id)
self.assertEqual('The New Beatles', new_beatles.name)
self.assertTrue(BandMember.objects.filter(name='George Harrison').exists())
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
def test_save_commit_true(self):
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
ringo = BandMember(name='Richard Starkey')
beatles = Band(name='The Beatles', members=[john, paul, ringo])
beatles.save()
john_id, paul_id, ringo_id = john.id, paul.id, ringo.id
self.assertTrue(john_id)
self.assertTrue(paul_id)
band_members_formset = self.BandMembersFormset(
{
'form-TOTAL_FORMS': 4,
'form-INITIAL_FORMS': 3,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-DELETE': 'form-0-DELETE',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney',
'form-1-id': paul_id,
'form-2-name':
'Ringo Starr', # changing data of an existing record
'form-2-id': ringo_id,
'form-3-name': '',
'form-3-id': '',
},
queryset=beatles.members.all())
self.assertTrue(band_members_formset.is_valid())
updated_members = band_members_formset.save()
self.assertEqual(1, len(updated_members))
self.assertEqual('Ringo Starr', updated_members[0].name)
self.assertEqual(ringo_id, updated_members[0].id)
self.assertFalse(BandMember.objects.filter(id=john_id).exists())
self.assertEqual('Paul McCartney',
BandMember.objects.get(id=paul_id).name)
self.assertEqual(beatles.id,
BandMember.objects.get(id=paul_id).band_id)
self.assertEqual('Ringo Starr',
BandMember.objects.get(id=ringo_id).name)
self.assertEqual(beatles.id,
BandMember.objects.get(id=ringo_id).band_id)
def test_saved_items_with_non_db_relation(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
beatles = Band(name='The Beatles', members=[john, paul])
beatles.save()
# pack and unpack the record so that we're working with a non-db-backed queryset
new_beatles = Band.from_json(beatles.to_json())
form = BandForm({
'name': "The New Beatles",
'members-TOTAL_FORMS': 4,
'members-INITIAL_FORMS': 2,
'members-MAX_NUM_FORMS': 1000,
'members-0-name': john.name,
'members-0-DELETE': 'members-0-DELETE',
'members-0-id': john.id,
'members-1-name': paul.name,
'members-1-id': paul.id,
'members-2-name': 'George Harrison',
'members-2-id': '',
'members-3-name': '',
'members-3-id': '',
'albums-TOTAL_FORMS': 0,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
}, instance=new_beatles)
self.assertTrue(form.is_valid())
form.save()
new_beatles = Band.objects.get(id=beatles.id)
self.assertEqual('The New Beatles', new_beatles.name)
self.assertTrue(BandMember.objects.filter(name='George Harrison').exists())
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
def test_can_create_formset(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
band_members_formset = self.BandMembersFormset(queryset=beatles.members.all())
self.assertEqual(5, len(band_members_formset.forms))
self.assertEqual('John Lennon', band_members_formset.forms[0].instance.name)
def test_saved_items(self):
class BandForm(ClusterForm):
class Meta:
model = Band
fields = ['name']
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
beatles = Band(name='The Beatles', members=[john, paul])
beatles.save()
self.assertTrue(john.id)
self.assertTrue(paul.id)
form = BandForm({
'name': "The New Beatles",
'members-TOTAL_FORMS': 4,
'members-INITIAL_FORMS': 2,
'members-MAX_NUM_FORMS': 1000,
'members-0-name': john.name,
'members-0-DELETE': 'members-0-DELETE',
'members-0-id': john.id,
'members-1-name': paul.name,
'members-1-id': paul.id,
'members-2-name': 'George Harrison',
'members-2-id': '',
'members-3-name': '',
'members-3-id': '',
'albums-TOTAL_FORMS': 0,
'albums-INITIAL_FORMS': 0,
'albums-MAX_NUM_FORMS': 1000,
}, instance=beatles)
self.assertTrue(form.is_valid())
form.save()
new_beatles = Band.objects.get(id=beatles.id)
self.assertEqual('The New Beatles', new_beatles.name)
self.assertTrue(BandMember.objects.filter(name='George Harrison').exists())
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
def test_save_commit_true(self):
john = BandMember(name='John Lennon')
paul = BandMember(name='Paul McCartney')
ringo = BandMember(name='Richard Starkey')
beatles = Band(name='The Beatles', members=[
john, paul, ringo
])
beatles.save()
john_id, paul_id, ringo_id = john.id, paul.id, ringo.id
self.assertTrue(john_id)
self.assertTrue(paul_id)
band_members_formset = self.BandMembersFormset({
'form-TOTAL_FORMS': 4,
'form-INITIAL_FORMS': 3,
'form-MAX_NUM_FORMS': 1000,
'form-0-name': 'John Lennon',
'form-0-DELETE': 'form-0-DELETE',
'form-0-id': john_id,
'form-1-name': 'Paul McCartney',
'form-1-id': paul_id,
'form-2-name': 'Ringo Starr', # changing data of an existing record
'form-2-id': ringo_id,
'form-3-name': '',
'form-3-id': '',
}, queryset=beatles.members.all())
self.assertTrue(band_members_formset.is_valid())
updated_members = band_members_formset.save()
self.assertEqual(1, len(updated_members))
self.assertEqual('Ringo Starr', updated_members[0].name)
self.assertEqual(ringo_id, updated_members[0].id)
self.assertFalse(BandMember.objects.filter(id=john_id).exists())
self.assertEqual('Paul McCartney', BandMember.objects.get(id=paul_id).name)
self.assertEqual(beatles.id, BandMember.objects.get(id=paul_id).band_id)
self.assertEqual('Ringo Starr', BandMember.objects.get(id=ringo_id).name)
self.assertEqual(beatles.id, BandMember.objects.get(id=ringo_id).band_id)
def test_deserialize_with_multiple_sort_order(self):
Album._meta.ordering = ['sort_order', 'name']
beatles = Band.from_json('{"pk": null, "albums": [{"pk": 1, "name": "With The Beatles", "sort_order": 1}, {"pk": 2, "name": "Please Please Me", "sort_order": 1}, {"pk": 3, "name": "Please Please Me", "sort_order": 2}], "name": "The Beatles", "members": []}')
Album._meta.ordering = ['sort_order']
self.assertEqual(3, beatles.albums.count())
# Make sure the albums were ordered correctly
self.assertEqual(2, beatles.albums.all()[0].pk)
self.assertEqual(1, beatles.albums.all()[1].pk)
self.assertEqual(3, beatles.albums.all()[2].pk)
def test_can_create_cluster(self):
beatles = Band(name='The Beatles')
self.assertEqual(0, beatles.members.count())
beatles.members = [
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
]
# we should be able to query this relation using (some) queryset methods
self.assertEqual(2, beatles.members.count())
self.assertEqual('John Lennon', beatles.members.all()[0].name)
self.assertEqual('Paul McCartney', beatles.members.filter(name='Paul McCartney')[0].name)
self.assertEqual('Paul McCartney', beatles.members.get(name='Paul McCartney').name)
self.assertRaises(BandMember.DoesNotExist, lambda: beatles.members.get(name='Reginald Dwight'))
self.assertRaises(BandMember.MultipleObjectsReturned, lambda: beatles.members.get())
self.assertEqual([('Paul McCartney',)], beatles.members.filter(name='Paul McCartney').values_list('name'))
self.assertEqual(['Paul McCartney'], beatles.members.filter(name='Paul McCartney').values_list('name', flat=True))
# quick-and-dirty check that we can invoke values_list with empty args list
beatles.members.filter(name='Paul McCartney').values_list()
self.assertTrue(beatles.members.filter(name='Paul McCartney').exists())
self.assertFalse(beatles.members.filter(name='Reginald Dwight').exists())
self.assertEqual('John Lennon', beatles.members.first().name)
self.assertEqual('Paul McCartney', beatles.members.last().name)
self.assertTrue('John Lennon', beatles.members.order_by('name').first())
self.assertTrue('Paul McCartney', beatles.members.order_by('-name').first())
# these should not exist in the database yet
self.assertFalse(Band.objects.filter(name='The Beatles').exists())
self.assertFalse(BandMember.objects.filter(name='John Lennon').exists())
beatles.save()
# this should create database entries
self.assertTrue(Band.objects.filter(name='The Beatles').exists())
self.assertTrue(BandMember.objects.filter(name='John Lennon').exists())
john_lennon = BandMember.objects.get(name='John Lennon')
beatles.members = [john_lennon]
# reassigning should take effect on the in-memory record
self.assertEqual(1, beatles.members.count())
# but not the database
self.assertEqual(2, Band.objects.get(name='The Beatles').members.count())
beatles.save()
# now updated in the database
self.assertEqual(1, Band.objects.get(name='The Beatles').members.count())
self.assertEqual(1, BandMember.objects.filter(name='John Lennon').count())
# removed member should be deleted from the db entirely
self.assertEqual(0, BandMember.objects.filter(name='Paul McCartney').count())
# queries on beatles.members should now revert to SQL
self.assertTrue(beatles.members.extra(where=["tests_bandmember.name='John Lennon'"]).exists())
def test_cluster_form_without_formsets(self):
class BandForm(ClusterForm):
class Meta:
model = Band
formsets = ()
fields = ['name']
beatles = Band(name='The Beatles')
beatles.save()
form = BandForm({
'name': "The New Beatles",
}, instance=beatles)
self.assertTrue(form.is_valid())
form.save(commit=False)
self.assertEqual(1, Band.objects.filter(name='The Beatles').count())
beatles.save()
self.assertEqual(0, Band.objects.filter(name='The Beatles').count())
def test_deserialize(self):
beatles = Band.from_serializable_data({
'pk': 9,
'albums': [],
'name': 'The Beatles',
'members': [
{'pk': None, 'name': 'John Lennon', 'band': None},
{'pk': None, 'name': 'Paul McCartney', 'band': None},
]
})
self.assertEqual(9, beatles.id)
self.assertEqual('The Beatles', beatles.name)
self.assertEqual(2, beatles.members.count())
self.assertEqual(BandMember, beatles.members.all()[0].__class__)
def test_queryset_filtering(self):
beatles = Band(name='The Beatles', members=[
BandMember(id=1, name='John Lennon'),
BandMember(id=2, name='Paul McCartney'),
])
self.assertEqual('Paul McCartney', beatles.members.get(id=2).name)
self.assertEqual('Paul McCartney', beatles.members.get(id='2').name)
self.assertEqual(1, beatles.members.filter(name='Paul McCartney').count())
# also need to be able to filter on foreign fields that return a model instance
# rather than a simple python value
self.assertEqual(2, beatles.members.filter(band=beatles).count())
# and ensure that the comparison is not treating all unsaved instances as identical
rutles = Band(name='The Rutles')
self.assertEqual(0, beatles.members.filter(band=rutles).count())
# and the comparison must be on the model instance's ID where available,
# not by reference
beatles.save()
beatles.members.add(BandMember(id=3, name='George Harrison')) # modify the relation so that we're not to a plain database-backed queryset
also_beatles = Band.objects.get(id=beatles.id)
self.assertEqual(3, beatles.members.filter(band=also_beatles).count())
def test_model_with_zero_pk(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
beatles.save()
beatles.pk = 0
beatles.members.commit()
beatles.save()
self.assertEqual(Band.objects.get(pk=0).name, 'The Beatles')
def test_integrity_error_with_none_pk(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
])
beatles.save()
beatles.pk = None
self.assertRaises(IntegrityError, lambda: beatles.members.commit())
# this should work fine, as Django will end up cloning this entity
beatles.save()
self.assertEqual(Band.objects.get(pk=beatles.pk).name, 'The Beatles')
def test_save_with_update_fields(self):
beatles = Band(name='The Beatles', members=[
BandMember(name='John Lennon'),
BandMember(name='Paul McCartney'),
], albums=[
Album(name='Please Please Me', sort_order=1),
Album(name='With The Beatles', sort_order=2),
Album(name='Abbey Road', sort_order=3),
])
beatles.save()
# modify both relations, but only commit the change to members
beatles.members.clear()
beatles.albums.clear()
beatles.name = 'The Rutles'
beatles.save(update_fields=['name', 'members'])
updated_beatles = Band.objects.get(pk=beatles.pk)
self.assertEqual(updated_beatles.name, 'The Rutles')
self.assertEqual(updated_beatles.members.count(), 0)
self.assertEqual(updated_beatles.albums.count(), 3)
def test_deserialize_json(self):
beatles = Band.from_json('{"pk": 9, "albums": [], "name": "The Beatles", "members": [{"pk": null, "name": "John Lennon", "band": null}, {"pk": null, "name": "Paul McCartney", "band": null}]}')
self.assertEqual(9, beatles.id)
self.assertEqual('The Beatles', beatles.name)
self.assertEqual(2, beatles.members.count())
self.assertEqual(BandMember, beatles.members.all()[0].__class__)