Fixed #1142 -- Added multiple database support.

This monster of a patch is the result of Alex Gaynor's 2009 Google Summer of Code project.
Congratulations to Alex for a job well done.

Big thanks also go to:
 * Justin Bronn for keeping GIS in line with the changes,
 * Karen Tracey and Jani Tiainen for their help testing Oracle support
 * Brett Hoerner, Jon Loyens, and Craig Kimmerer for their feedback.
 * Malcolm Treddinick for his guidance during the GSoC submission process.
 * Simon Willison for driving the original design process
 * Cal Henderson for complaining about ponies he wanted.

... and everyone else too numerous to mention that helped to bring this feature into fruition.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@11952 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 4 insertions, 8 deletions

diff --git a/django/db/models/sql/datastructures.py b/django/db/models/sql/datastructures.py
index 4d53999c79..92d64e15dd 100644
--- a/django/db/models/sql/datastructures.py
+++ b/django/db/models/sql/datastructures.py
@@ -29,22 +29,18 @@ class Date(object):
     """
     Add a date selection column.
     """
-    def __init__(self, col, lookup_type, date_sql_func):
+    def __init__(self, col, lookup_type):
         self.col = col
         self.lookup_type = lookup_type
-        self.date_sql_func = date_sql_func
 
     def relabel_aliases(self, change_map):
         c = self.col
         if isinstance(c, (list, tuple)):
             self.col = (change_map.get(c[0], c[0]), c[1])
 
-    def as_sql(self, quote_func=None):
-        if not quote_func:
-            quote_func = lambda x: x
+    def as_sql(self, qn, connection):
         if isinstance(self.col, (list, tuple)):
-            col = '%s.%s' % tuple([quote_func(c) for c in self.col])
+            col = '%s.%s' % tuple([qn(c) for c in self.col])
         else:
             col = self.col
-        return self.date_sql_func(self.lookup_type, col)
-
+        return connection.ops.date_trunc_sql(self.lookup_type, col)