- Added explicit true()/false() constructs to expression

lib - coercion rules will intercept "False"/"True"
into these constructs.  In 0.6, the constructs were
typically converted straight to string, which was
no longer accepted in 0.7.  [ticket:2117]

1 files changed, 7 insertions, 1 deletions

diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index fe04da1a1..82c1748cc 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -426,9 +426,15 @@ class SQLCompiler(engine.Compiled):
              self.post_process_text(textclause.text))
         )
 
-    def visit_null(self, null, **kwargs):
+    def visit_null(self, expr, **kw):
         return 'NULL'
 
+    def visit_true(self, expr, **kw):
+        return 'true'
+
+    def visit_false(self, expr, **kw):
+        return 'false'
+
     def visit_clauselist(self, clauselist, **kwargs):
         sep = clauselist.operator
         if sep is None: