add create contest problem

contest/migrations/0003_auto_20170217_0820.py

@@ -0,0 +1,34 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.12 on 2017-02-17 08:20
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contest', '0002_auto_20170209_0845'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='contestproblem',
+            unique_together=set([]),
+        ),
+        migrations.RemoveField(
+            model_name='contestproblem',
+            name='contest',
+        ),
+        migrations.RemoveField(
+            model_name='contestproblem',
+            name='created_by',
+        ),
+        migrations.RemoveField(
+            model_name='contestproblem',
+            name='tags',
+        ),
+        migrations.DeleteModel(
+            name='ContestProblem',
+        ),
+    ]

contest/models.py

@@ -3,7 +3,6 @@ from django.utils.timezone import now
 from jsonfield import JSONField
 
 from account.models import User
-from problem.models import AbstractProblem
 from utils.models import RichTextField
 
 
@@ -61,17 +60,6 @@ class Contest(models.Model):
         db_table = "contest"
 
 
-class ContestProblem(AbstractProblem):
-    _id = models.CharField(max_length=24, db_index=True)
-    contest = models.ForeignKey(Contest)
-    # 是否已经公开了题目，防止重复公开
-    is_public = models.BooleanField(default=False)
-
-    class Meta:
-        db_table = "contest_problem"
-        unique_together = (("_id", "contest"), )
-
-
 class ContestRank(models.Model):
     user = models.ForeignKey(User)
     contest = models.ForeignKey(Contest)