5 files changed, 46 insertions, 4 deletions
diff --git a/releng/admin.py b/releng/admin.py
index c7e6396e..9c93c4be 100644
--- a/releng/admin.py
+++ b/releng/admin.py
@@ -18,6 +18,7 @@ class ReleaseAdmin(admin.ModelAdmin):
     list_display = ('version', 'release_date', 'kernel_version', 'available',
             'created')
     list_filter = ('available', 'release_date')
+    readonly_fields = ('created', 'last_modified')
 
 
 SIMPLE_MODELS = (Architecture, BootType, Bootloader, ClockChoice, Filesystem,
diff --git a/releng/migrations/0002_release_last_modified.py b/releng/migrations/0002_release_last_modified.py
new file mode 100644
index 00000000..58502452
--- /dev/null
+++ b/releng/migrations/0002_release_last_modified.py
@@ -0,0 +1,22 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+import datetime
+from django.utils.timezone import utc
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('releng', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='release',
+            name='last_modified',
+            field=models.DateTimeField(default=datetime.datetime(2001, 1, 1, tzinfo=utc), editable=False),
+            preserve_default=False,
+        ),
+    ]
diff --git a/releng/migrations/0003_release_populate_last_modified.py b/releng/migrations/0003_release_populate_last_modified.py
new file mode 100644
index 00000000..ec7b6fda
--- /dev/null
+++ b/releng/migrations/0003_release_populate_last_modified.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+def forwards(apps, schema_editor):
+    Release = apps.get_model('releng', 'Release')
+    Release.objects.update(last_modified=models.F('created'))
+
+def backwards(apps, schema_editor):
+    pass
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('releng', '0002_release_last_modified'),
+    ]
+
+    operations = [
+        migrations.RunPython(forwards, backwards)
+    ]
diff --git a/releng/models.py b/releng/models.py
index 66690e81..2f9216bd 100644
--- a/releng/models.py
+++ b/releng/models.py
@@ -120,6 +120,7 @@ class Release(models.Model):
     md5_sum = models.CharField('MD5 digest', max_length=32, blank=True)
     sha1_sum = models.CharField('SHA1 digest', max_length=40, blank=True)
     created = models.DateTimeField(editable=False)
+    last_modified = models.DateTimeField(editable=False)
     available = models.BooleanField(default=True)
     info = models.TextField('Public information', blank=True)
     torrent_data = models.TextField(blank=True,
diff --git a/releng/views.py b/releng/views.py
index af25b966..0fb55b29 100644
--- a/releng/views.py
+++ b/releng/views.py
@@ -247,9 +247,6 @@ class ReleaseJSONEncoder(DjangoJSONEncoder):
             'created', 'md5_sum', 'sha1_sum')
 
     def default(self, obj):
-        if hasattr(obj, '__iter__'):
-            # mainly for queryset serialization
-            return list(obj)
         if isinstance(obj, Release):
             data = {attr: getattr(obj, attr) or None
                     for attr in self.release_attributes}
@@ -276,7 +273,7 @@ def releases_json(request):
 
     data = {
         'version': 1,
-        'releases': releases,
+        'releases': list(releases),
         'latest_version': latest_version,
     }
     to_json = json.dumps(data, ensure_ascii=False, cls=ReleaseJSONEncoder)