Hello folks, I am learning to set up multiple databases routing in Django.
Before I started, I had everything working properly. Then, I wrote dbrouter.py under the site directory, basically by copying the example in the Django document about using multiple databases<https://docs.djangoproject.com/en/dev/topics/db/multi-db/>. Here is what's in dbrouter.py: #------------------------------------------------------------------------------------------------------------------------------------ class DBRouter(object): def db_for_read(self, model, **hints): label = model._meta.app_label if label == 'books': dbName = 'test' # dbName is a name in settings.DATABASES else: dbName = None return dbName def db_for_write(self, model, **hints): label = model._meta.app_label if label == 'books': dbName = 'test' else: dbName = None return dbName def allow_syncdb(self, db, model): # db is a string of database name. label = model._meta.app_label if label == 'books': dbName = 'test' else: dbName = None return dbName == db #------------------------------------------------------------------------------------------------------------------------------------ As you can see from dbrouter.py, I have an app called books. Here is the DATABASES setting: DATABASES = { 'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': dbPath + os.sep + 'default.sqlite', 'USER': '', 'PASSWORD': '', 'HOST': '', 'PORT': '', }, 'test': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': dbPath + os.sep + 'test.sqlite', 'USER': '', 'PASSWORD': '', 'HOST': '', 'PORT': '', } } Then, I added the following setting to settings.py. DATABASE_ROUTERS = [siteName + '.dbrouter.DBRouter'] Finally, I ran ./manage.py syncdb. And got these error messages: >$ ./manage.py syncdb Creating tables ... Traceback (most recent call last): File "./manage.py", line 17, in <module> execute_manager(settings) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv self.execute(*args, **options.__dict__) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute output = self.handle(*args, **options) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/base.py", line 351, in handle return self.handle_noargs(**options) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 109, in handle_noargs emit_post_sync_signal(created_models, verbosity, interactive, db) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/core/management/sql.py", line 190, in emit_post_sync_signal interactive=interactive, db=db) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 172, in send response = receiver(signal=self, sender=sender, **named) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/contrib/auth/management/__init__.py", line 30, in create_permissions ctype = ContentType.objects.get_for_model(klass) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/contrib/contenttypes/models.py", line 38, in get_for_model defaults = {'name': smart_unicode(opts.verbose_name_raw)}, File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/manager.py", line 135, in get_or_create return self.get_query_set().get_or_create(**kwargs) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/query.py", line 378, in get_or_create return self.get(**lookup), False File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/query.py", line 344, in get num = len(clone) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/query.py", line 82, in __len__ self._result_cache = list(self.iterator()) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/query.py", line 273, in iterator for row in compiler.results_iter(): File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 680, in results_iter for rows in self.execute_sql(MULTI): File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 735, in execute_sql cursor.execute(sql, params) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/backends/util.py", line 34, in execute return self.cursor.execute(sql, params) File "/Users/jianbao/projects/tao.com/mysite/lib/python2.7/site-packages/django/db/backends/sqlite3/base.py", line 234, in execute return Database.Cursor.execute(self, query, params) django.db.utils.DatabaseError: no such table: django_content_type Any help would be appreciated. Thank you very much. Jim -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/lLX5gCYjW28J. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
