schema-evolution:

added check to see if your backend is supported yet.

git-svn-id: http://code.djangoproject.com/svn/django/branches/schema-evolution@5793 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 8 insertions, 0 deletions

diff --git a/django/core/management.py b/django/core/management.py
index a843c411e1..96723235fe 100644
--- a/django/core/management.py
+++ b/django/core/management.py
@@ -496,6 +496,14 @@ def get_sql_evolution(app):
             "Edit your settings file and change DATABASE_ENGINE to something like 'postgresql' or 'mysql'.\n"))
         sys.exit(1)
 
+    try:
+        backend.get_add_column_sql
+    except:
+        # This must be an unsupported database backend
+        sys.stderr.write(style.ERROR("Error: Django doesn't know which syntax to use for your SQL statements, " +
+            "because schema evolution support isn't built into your database backend yet.  Sorry!\n"))
+        sys.exit(1)
+
     # First, try validating the models.
     _check_for_validation_errors()