Commit 32d5c390 authored by Malcolm Tredinnick's avatar Malcolm Tredinnick
Browse files

Fixed #6523 -- Use the correct cast on field types for PostgreSQL when 

searching within a field column (e.g. "like", "contains", etc). Required for
PostgreSQL 8.3. Thanks to Dan Watson for the patch.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@8242 bcc190cf-cafb-0310-a4f2-bffc1f526a37
parent 6d4b1437

django/db/backends/postgresql/operations.py

+6 −0
Original line number Diff line number Diff line
@@ -35,6 +35,12 @@ class DatabaseOperations(BaseDatabaseOperations): 
    def deferrable_sql(self):

        return " DEFERRABLE INITIALLY DEFERRED"



    def lookup_cast(self, lookup_type):

        if lookup_type in ('iexact', 'contains', 'icontains', 'startswith', 'istartswith',

                             'endswith', 'iendswith'):

            return "%s::text"

        return "%s"



    def field_cast_sql(self, db_type):

        if db_type == 'inet':

            return 'HOST(%s)'

tests/modeltests/lookup/models.py

+6 −0
Original line number Diff line number Diff line
@@ -34,6 +34,12 @@ __test__ = {'API_TESTS':r""" 
>>> a7 = Article(headline='Article 7', pub_date=datetime(2005, 7, 27))

>>> a7.save()



# text matching tests for PostgreSQL 8.3

>>> Article.objects.filter(id__iexact='1')

[<Article: Article 1>]

>>> Article.objects.filter(pub_date__startswith='2005')

[<Article: Article 5>, <Article: Article 6>, <Article: Article 4>, <Article: Article 2>, <Article: Article 3>, <Article: Article 7>, <Article: Article 1>]



# Each QuerySet gets iterator(), which is a generator that "lazily" returns

# results using database-level iteration.

>>> for a in Article.objects.iterator():