增加富文本的 xss 过滤

problem/migrations/0008_auto_20150922_1702.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+import utils.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('problem', '0007_remove_problem_last_update_time'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='problem',
+            name='description',
+            field=utils.models.RichTextField(),
+        ),
+    ]

problem/models.py

@@ -2,6 +2,7 @@
 from django.db import models
 
 from account.models import User
+from utils.models import RichTextField
 
 
 class ProblemTag(models.Model):
@@ -15,7 +16,7 @@ class AbstractProblem(models.Model):
     # 标题
     title = models.CharField(max_length=50)
     # 问题描述 HTML 格式
-    description = models.TextField()
+    description = RichTextField()
     # 输入描述
     input_description = models.CharField(max_length=10000)
     # 输出描述