support display id

2017-02-09 16:47:08 +08:00
parent 7f105e4a69
commit 0678dd4fca
6 changed files with 83 additions and 4 deletions
--- a/problem/models.py
+++ b/problem/models.py
@@ -65,4 +65,4 @@ class AbstractProblem(models.Model):


 class Problem(AbstractProblem):
-    pass
+    _id = models.CharField(max_length=24, unique=True, db_index=True)