def test_operation_m2m_to_sorted_m2m(self):
# Let's start with state after 0001
with capture_stdout():
call_command('migrate', 'altersortedmanytomanyfield_tests', '0001')
Target = self.state_0001_apps.get_model(
'altersortedmanytomanyfield_tests', 'target')
M2MToSortedM2M = self.state_0001_apps.get_model(
'altersortedmanytomanyfield_tests', 'm2mtosortedm2m')
t1 = Target.objects.create(pk=1)
t2 = Target.objects.create(pk=2)
t3 = Target.objects.create(pk=3)
field = get_field(M2MToSortedM2M,'m2m')
through_model = get_rel(field).through
# No ordering is in place.
self.assertTrue(not through_model._meta.ordering)
instance = M2MToSortedM2M.objects.create(pk=1)
instance.m2m.add(t3)
instance.m2m.add(t1)
instance.m2m.add(t2)
# We cannot assume any particular order now.
# Migrate to state 0002, then we should be able to apply order.
with capture_stdout():
call_command('migrate', 'altersortedmanytomanyfield_tests', '0002')
Target = self.state_0002_apps.get_model(
'altersortedmanytomanyfield_tests', 'target')
M2MToSortedM2M = self.state_0002_apps.get_model(
'altersortedmanytomanyfield_tests', 'm2mtosortedm2m')
t1 = Target.objects.get(pk=1)
t2 = Target.objects.get(pk=2)
t3 = Target.objects.get(pk=3)
field = get_field(M2MToSortedM2M,'m2m')
through_model = get_rel(field).through
# Now, ordering is there.
self.assertTrue(list(through_model._meta.ordering), ['sort_value'])
instance = M2MToSortedM2M.objects.get(pk=1)
self.assertEqual(list(instance.m2m.order_by('pk')), [t1, t2, t3])
m2m_set(instance, "m2m", [t3, t1, t2])
self.assertEqual(list(instance.m2m.all()), [t3, t1, t2])
instance.m2m.remove(t1)
instance.m2m.remove(t2)
instance.m2m.add(t2)
instance.m2m.add(t1)
self.assertEqual(list(instance.m2m.all()), [t3, t2, t1])
def test_operation_m2m_to_sorted_m2m(self):
# Let's start with state after 0001
with capture_stdout():
call_command('migrate', 'altersortedmanytomanyfield_tests', '0001')
Target = self.state_0001_apps.get_model(
'altersortedmanytomanyfield_tests', 'target')
M2MToSortedM2M = self.state_0001_apps.get_model(
'altersortedmanytomanyfield_tests', 'm2mtosortedm2m')
t1 = Target.objects.create(pk=1)
t2 = Target.objects.create(pk=2)
t3 = Target.objects.create(pk=3)
field = get_field(M2MToSortedM2M,'m2m')
through_model = get_rel(field).through
# No ordering is in place.
self.assertTrue(not through_model._meta.ordering)
instance = M2MToSortedM2M.objects.create(pk=1)
instance.m2m.add(t3)
instance.m2m.add(t1)
instance.m2m.add(t2)
# We cannot assume any particular order now.
# Migrate to state 0002, then we should be able to apply order.
with capture_stdout():
call_command('migrate', 'altersortedmanytomanyfield_tests', '0002')
Target = self.state_0002_apps.get_model(
'altersortedmanytomanyfield_tests', 'target')
M2MToSortedM2M = self.state_0002_apps.get_model(
'altersortedmanytomanyfield_tests', 'm2mtosortedm2m')
t1 = Target.objects.get(pk=1)
t2 = Target.objects.get(pk=2)
t3 = Target.objects.get(pk=3)
field = get_field(M2MToSortedM2M,'m2m')
through_model = get_rel(field).through
# Now, ordering is there.
self.assertTrue(list(through_model._meta.ordering), ['sort_value'])
instance = M2MToSortedM2M.objects.get(pk=1)
self.assertEqual(list(instance.m2m.order_by('pk')), [t1, t2, t3])
m2m_set(instance, "m2m", [t3, t1, t2])
self.assertEqual(list(instance.m2m.all()), [t3, t1, t2])
instance.m2m.remove(t1)
instance.m2m.remove(t2)
instance.m2m.add(t2)
instance.m2m.add(t1)
self.assertEqual(list(instance.m2m.all()), [t3, t2, t1])
def test_custom_sort_value_field_name(self):
from sortedm2m.fields import SORT_VALUE_FIELD_NAME
self.assertEqual(len(self.model._meta.many_to_many), 1)
sortedm2m = self.model._meta.many_to_many[0]
intermediate_model = get_rel(sortedm2m).through
# make sure that standard sort field is not used
self.assertRaises(FieldDoesNotExist, get_field, intermediate_model,
SORT_VALUE_FIELD_NAME)
field = get_field(intermediate_model, 'diy_sort_number')
self.assertTrue(field)