#27285: Multi-db example : default database config can not be an empty dict
--------------------------------+-------------------------------
Reporter: Jose M Herrero | Owner: nobody
Type: Uncategorized | Status: new
Component: Documentation | Version: 1.10
Severity: Normal | Keywords: multi-db dbrouter
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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I have the same problem as ticket #26955 that is closed, to reproduce
with nothing interfering I started a fresh project, these are the steps to
reproduce:
1. Start a new DJango 1.10.1 project with `django-admin startproject
mysite` and cd into it `cd mysite`
2. Create a database router `mysite/dbrouter.py`
{{{
#!div style="font-size: 80%"
Code highlighting:
{{{#!python
class DbRouter(object):
def db_for_read(self, model, **hints):
return 'master'
def db_for_write(self, model, **hints):
return 'master'
def allow_relation(self, obj1, obj2, **hints):
return True
def allow_migrate(self, db, app_label, model_name=None, **hints):
return True
}}}
}}}
3. Edit `mysite.settings.py` as doc says with empty default and set the
database router
{{{
#!div style="font-size: 80%"
Code highlighting:
{{{#!python
DATABASES = {
'default': {},
'master': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
},
}
DATABASE_ROUTERS = ['mysite.dbrouter.DbRouter']
}}}
}}}
4. Create `mysite/tests.py`
{{{
#!div style="font-size: 80%"
Code highlighting:
{{{#!python
from django.test import TestCase
class SurveyFormTest(TestCase):
def test_sample(self):
print 'hello'
}}}
}}}
5. Execute the tests and bang! `python manage.py test mysite`
{{{
Creating test database for alias 'master'...
hello
.E
======================================================================
ERROR: test_sample (mysite.tests.SurveyFormTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/test/testcases.py", line 216, in __call__
self._post_teardown()
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/test/testcases.py", line 908, in _post_teardown
self._fixture_teardown()
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/test/testcases.py", line 1060, in _fixture_teardown
return super(TestCase, self)._fixture_teardown()
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/test/testcases.py", line 943, in _fixture_teardown
inhibit_post_migrate=inhibit_post_migrate)
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/core/management/__init__.py", line 130, in call_command
return command.execute(*args, **defaults)
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/core/management/base.py", line 345, in execute
output = self.handle(*args, **options)
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/core/management/commands/flush.py", line 54, in handle
allow_cascade=allow_cascade)
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/core/management/sql.py", line 15, in sql_flush
tables =
connection.introspection.django_table_names(only_existing=True,
include_views=False)
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/db/backends/base/introspection.py", line 88, in
django_table_names
existing_tables = self.table_names(include_views=include_views)
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/db/backends/base/introspection.py", line 55, in
table_names
with self.connection.cursor() as cursor:
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/db/backends/base/base.py", line 233, in cursor
cursor = self.make_cursor(self._cursor())
File "/home/chemary/workspace/myvirtualenv/local/lib/python2.7/site-
packages/django/db/backends/dummy/base.py", line 21, in complain
raise ImproperlyConfigured("settings.DATABASES is improperly
configured. "
ImproperlyConfigured: settings.DATABASES is improperly configured. Please
supply the ENGINE value. Check settings documentation for more details.
----------------------------------------------------------------------
Ran 1 test in 0.002s
FAILED (errors=1)
Destroying test database for alias 'master'...
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/27285>
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