fixing view queries

Author: tenderlove

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -720,9 +720,11 @@ def table_exists?(name)
 
         exec_query(<<-SQL, 'SCHEMA', binds).rows.first[0].to_i > 0
             SELECT COUNT(*)
-            FROM pg_tables
-            WHERE tablename = $1
-           AND schemaname = #{schema ? "$2" : "ANY (current_schemas(false))"}
+            FROM pg_class c
+            LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
+            WHERE c.relkind in ('v','r')
+            AND c.relname = $1
+            AND n.nspname = #{schema ? '$2' : 'ANY (current_schemas(false))'}
         SQL
       end