Ticket #9596: dj_date_lookup_c.patch

django/db/models/sql/where.py

@@ -160 +160 @@
                 return ('%s IN %s' % (field_sql, extra), params)
             return ('%s IN (%s)' % (field_sql, ', '.join(['%s'] * len(params))),
                     params)
-        elif lookup_type in ('range', 'year'):
+        elif lookup_type in ('range', 'year', 'date'):
             return ('%s BETWEEN %%s and %%s' % field_sql, params)
         elif lookup_type in ('month', 'day'):
             return ('%s = %%s' % connection.ops.date_extract_sql(lookup_type,

django/db/models/sql/constants.py

@@ -4 +4 @@
 QUERY_TERMS = dict([(x, None) for x in (
     'exact', 'iexact', 'contains', 'icontains', 'gt', 'gte', 'lt', 'lte', 'in',
     'startswith', 'istartswith', 'endswith', 'iendswith', 'range', 'year',
-    'month', 'day', 'isnull', 'search', 'regex', 'iregex',
+    'month', 'day', 'isnull', 'search', 'regex', 'iregex', 'date',
     )])
 
 # Size of each "chunk" for get_iterator calls.

django/db/models/fields/__init__.py

@@ -212 +212 @@
             return ["%%%s" % connection.ops.prep_for_like_query(value)]
         elif lookup_type == 'isnull':
             return []
+        elif lookup_type == 'date':
+            return self.get_db_prep_lookup('range', (datetime.datetime.combine(value, datetime.time.min),
+                                                     datetime.datetime.combine(value, datetime.time.max)))
         elif lookup_type == 'year':
             try:
                 value = int(value)

docs/ref/models/querysets.txt

@@ -1156 +1156 @@
 You can use ``range`` anywhere you can use ``BETWEEN`` in SQL -- for dates,
 numbers and even characters.
 
+date
+~~~~
+
+Tests datetime fields for date equality, disregarding time.
+
+Example::
+
+    yesterday = datetime.date.today() - datetime.timedelta(1)
+    Entry.objects.filter(pub_date__date = yesterday)
+
+SQL equivalent::
+
+    SELECT ... WHERE pub_date BETWEEN '2008-11-12' and '2008-11-12';
+
 year
 ~~~~