Prevent operation pollution by later operations of fields

django · Jun 6, 2014 · 1fe941a · 1fe941a
1 parent aa12ea0
commit 1fe941a
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/django/db/migrations/operations/models.py b/django/db/migrations/operations/models.py
@@ -21,7 +21,13 @@ def __init__(self, name, fields, options=None, bases=None):
         self.bases = bases or (models.Model,)
 
     def state_forwards(self, app_label, state):
-        state.models[app_label, self.name.lower()] = ModelState(app_label, self.name, self.fields, self.options, self.bases)
+        state.models[app_label, self.name.lower()] = ModelState(
+            app_label,
+            self.name,
+            list(self.fields),
+            dict(self.options),
+            tuple(self.bases),
+        )
 
     def database_forwards(self, app_label, schema_editor, from_state, to_state):
         apps = to_state.render()