删除 ManyToMany 字段无效的 null=True

2015-08-12 22:59:05 +08:00
parent ba57341dbd
commit f6c3ceee40
2 changed files with 20 additions and 1 deletions
--- a/problem/models.py
+++ b/problem/models.py
@@ -49,4 +49,4 @@ class Problem(AbstractProblem):
    # 难度 0 - n
    difficulty = models.IntegerField()
    # 标签
-    tags = models.ManyToManyField(ProblemTag, null=True)
+    tags = models.ManyToManyField(ProblemTag)