make create/delete_model() handle M2M tables

Author: timgraham

django_mongodb/features.py

@@ -126,9 +126,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
  "schema.tests.SchemaTests.test_remove_unique_together_does_not_remove_meta_constraints",
  "schema.tests.SchemaTests.test_unique_together",
  # ManyToManyField
- "schema.tests.SchemaTests.test_m2m_create",
- "schema.tests.SchemaTests.test_m2m_create_custom",
- "schema.tests.SchemaTests.test_m2m_create_inherited",
  "schema.tests.SchemaTests.test_m2m_rename_field_in_target_model",
  "schema.tests.SchemaTests.test_m2m_repoint",
  "schema.tests.SchemaTests.test_m2m_repoint_custom",

django_mongodb/schema.py

@@ -4,8 +4,16 @@
 class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
  def create_model(self, model):
  self.connection.database.create_collection(model._meta.db_table)
+ # Make implicit M2M tables.
+ for field in model._meta.local_many_to_many:
+ if field.remote_field.through._meta.auto_created:
+ self.create_model(field.remote_field.through)
 
  def delete_model(self, model):
+ # Delete implicit M2m tables.
+ for field in model._meta.local_many_to_many:
+ if field.remote_field.through._meta.auto_created:
+ self.delete_model(field.remote_field.through)
  self.connection.database[model._meta.db_table].drop()
 
  def add_field(self, model, field):