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Fixed #32197 -- Improved error message when loading a database backend fails.

This commit is contained in:
Hasan Ramezani 2020-11-15 21:34:35 +01:00 committed by Mariusz Felisiak
parent 464a4c0c59
commit 4cce1d13cf
2 changed files with 7 additions and 4 deletions
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6
django/db/utils.py
View File

@ -120,8 +120,10 @@ def load_backend(backend_name):
if backend_name not in ['django.db.backends.%s' % b for b in builtin_backends]: if backend_name not in ['django.db.backends.%s' % b for b in builtin_backends]:
backend_reprs = map(repr, sorted(builtin_backends)) backend_reprs = map(repr, sorted(builtin_backends))
raise ImproperlyConfigured( raise ImproperlyConfigured(
"%r isn't an available database backend.\n" "%r isn't an available database backend or couldn't be "
"Try using 'django.db.backends.XXX', where XXX is one of:\n" "imported. Check the above exception. To use one of the "
"built-in backends, use 'django.db.backends.XXX', where XXX "
"is one of:\n"
" %s" % (backend_name, ", ".join(backend_reprs)) " %s" % (backend_name, ", ".join(backend_reprs))
) from e_user ) from e_user
else: else:

5
tests/db_utils/tests.py
View File

@ -57,8 +57,9 @@ class LoadBackendTests(SimpleTestCase):
def test_load_backend_invalid_name(self): def test_load_backend_invalid_name(self):
msg = ( msg = (
"'foo' isn't an available database backend.\n" "'foo' isn't an available database backend or couldn't be "
"Try using 'django.db.backends.XXX', where XXX is one of:\n" "imported. Check the above exception. To use one of the built-in "
"backends, use 'django.db.backends.XXX', where XXX is one of:\n"
" 'mysql', 'oracle', 'postgresql', 'sqlite3'" " 'mysql', 'oracle', 'postgresql', 'sqlite3'"
) )
with self.assertRaisesMessage(ImproperlyConfigured, msg) as cm: with self.assertRaisesMessage(ImproperlyConfigured, msg) as cm: