merge problem and contest_problem

submission/migrations/0007_auto_20170923_1318.py

@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2017-09-23 13:18
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('submission', '0006_auto_20170830_1154'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='submission',
+            name='contest_id',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='contest.Contest'),
+        ),
+        migrations.AlterField(
+            model_name='submission',
+            name='problem_id',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='problem.Problem'),
+        ),
+        migrations.RenameField(
+            model_name='submission',
+            old_name='contest_id',
+            new_name='contest',
+        ),
+        migrations.RenameField(
+            model_name='submission',
+            old_name='problem_id',
+            new_name='problem',
+        ),
+    ]