linkcell: link_page can be empty (#7400, cont.)

combo/data/migrations/0008_auto_20150529_1504.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('data', '0007_auto_20150529_1003'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='linkcell',
+            name='link_page',
+            field=models.ForeignKey(related_name='link_cell', blank=True, to='data.Page', null=True),
+            preserve_default=True,
+        ),
+    ]

combo/data/models.py

@@ -442,7 +442,7 @@ class MenuCell(CellBase):
 class LinkCell(CellBase):
     title = models.CharField(_('Title'), max_length=150, blank=True)
     url = models.URLField(_('URL'), blank=True)
-    link_page = models.ForeignKey('data.Page', related_name='link_cell', null=True)
+    link_page = models.ForeignKey('data.Page', related_name='link_cell', blank=True, null=True)
     anchor = models.CharField(_('Anchor'), max_length=150, blank=True)
 
     template_name = 'combo/link-cell.html'