fixing avatar sidebar

5 files changed, 362 insertions, 1 deletions

diff --git a/askbot/conf/sidebar_main.py b/askbot/conf/sidebar_main.py
index 012d8ace..57f9848d 100644
--- a/askbot/conf/sidebar_main.py
+++ b/askbot/conf/sidebar_main.py
@@ -41,6 +41,16 @@ settings.register(
 )
 
 settings.register(
+    values.IntegerValue(
+        SIDEBAR_MAIN,
+        'SIDEBAR_MAIN_AVATAR_LIMIT',
+        description = _('Limit how many avatars will be displayed on the sidebar'),
+        default = 16 
+    )
+)
+
+
+settings.register(
     values.BooleanValue(
         SIDEBAR_MAIN,
         'SIDEBAR_MAIN_SHOW_TAG_SELECTOR',
diff --git a/askbot/management/commands/update_has_valid_gravatar.py b/askbot/management/commands/update_has_valid_gravatar.py
new file mode 100644
index 00000000..8cd40e7d
--- /dev/null
+++ b/askbot/management/commands/update_has_valid_gravatar.py
@@ -0,0 +1,15 @@
+from django.core.management.base import NoArgsCommand
+from askbot.models import User
+
+class Command(NoArgsCommand):
+
+    def handle_noargs(self, **options):
+        users = User.objects.all()
+        has_avatar = User.objects.filter(has_valid_gravatar= True).count()
+        print '%s users in total, %s have valid avatar' % (users.count(), has_avatar) 
+        for user in users:
+            user.update_has_valid_gravatar()
+
+        print 'Updated all the users'
+        has_avatar = User.objects.filter(has_valid_gravatar= True).count()
+        print '%s users in total, %s have valid avatar' % (users.count(), has_avatar) 
diff --git a/askbot/migrations/0043_add_has_valid_gravatar.py b/askbot/migrations/0043_add_has_valid_gravatar.py
new file mode 100644
index 00000000..8d15f062
--- /dev/null
+++ b/askbot/migrations/0043_add_has_valid_gravatar.py
@@ -0,0 +1,314 @@
+# encoding: utf-8
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        db.add_column(
+            u'auth_user',
+            'has_valid_gravatar',
+            self.gf(
+                'django.db.models.fields.BooleanField'
+            )(default = False)
+        )
+
+
+    def backwards(self, orm):
+        db.delete_column(u'auth_user', 'has_valid_gravatar')
+
+
+    models = {
+        'askbot.activity': {
+            'Meta': {'object_name': 'Activity', 'db_table': "u'activity'"},
+            'active_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'activity_type': ('django.db.models.fields.SmallIntegerField', [], {}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_auditted': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['askbot.Question']", 'null': 'True'}),
+            'receiving_users': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'received_activity'", 'symmetrical': 'False', 'to': "orm['auth.User']"}),
+            'recipients': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'incoming_activity'", 'symmetrical': 'False', 'through': "orm['askbot.ActivityAuditStatus']", 'to': "orm['auth.User']"}),
+            'summary': ('django.db.models.fields.TextField', [], {'default': "''"}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
+        },
+        'askbot.activityauditstatus': {
+            'Meta': {'unique_together': "(('user', 'activity'),)", 'object_name': 'ActivityAuditStatus'},
+            'activity': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['askbot.Activity']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'status': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
+        },
+        'askbot.anonymousanswer': {
+            'Meta': {'object_name': 'AnonymousAnswer'},
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip_addr': ('django.db.models.fields.IPAddressField', [], {'max_length': '15'}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'anonymous_answers'", 'to': "orm['askbot.Question']"}),
+            'session_key': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'summary': ('django.db.models.fields.CharField', [], {'max_length': '180'}),
+            'text': ('django.db.models.fields.TextField', [], {}),
+            'wiki': ('django.db.models.fields.BooleanField', [], {'default': 'False'})
+        },
+        'askbot.anonymousquestion': {
+            'Meta': {'object_name': 'AnonymousQuestion'},
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']", 'null': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ip_addr': ('django.db.models.fields.IPAddressField', [], {'max_length': '15'}),
+            'is_anonymous': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'session_key': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'summary': ('django.db.models.fields.CharField', [], {'max_length': '180'}),
+            'tagnames': ('django.db.models.fields.CharField', [], {'max_length': '125'}),
+            'text': ('django.db.models.fields.TextField', [], {}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '300'}),
+            'wiki': ('django.db.models.fields.BooleanField', [], {'default': 'False'})
+        },
+        'askbot.answer': {
+            'Meta': {'object_name': 'Answer', 'db_table': "u'answer'"},
+            'accepted': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'accepted_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'answers'", 'to': "orm['auth.User']"}),
+            'comment_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'}),
+            'deleted': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'deleted_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'deleted_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'deleted_answers'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'html': ('django.db.models.fields.TextField', [], {'null': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'last_edited_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'last_edited_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'last_edited_answers'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'locked': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'locked_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'locked_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'locked_answers'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'offensive_flag_count': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'answers'", 'to': "orm['askbot.Question']"}),
+            'score': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'text': ('django.db.models.fields.TextField', [], {'null': 'True'}),
+            'vote_down_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'vote_up_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'wiki': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'wikified_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'})
+        },
+        'askbot.answerrevision': {
+            'Meta': {'ordering': "('-revision',)", 'object_name': 'AnswerRevision', 'db_table': "u'answer_revision'"},
+            'answer': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'revisions'", 'to': "orm['askbot.Answer']"}),
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'answerrevisions'", 'to': "orm['auth.User']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'revised_at': ('django.db.models.fields.DateTimeField', [], {}),
+            'revision': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'summary': ('django.db.models.fields.CharField', [], {'max_length': '300', 'blank': 'True'}),
+            'text': ('django.db.models.fields.TextField', [], {})
+        },
+        'askbot.award': {
+            'Meta': {'object_name': 'Award', 'db_table': "u'award'"},
+            'awarded_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'badge': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'award_badge'", 'to': "orm['askbot.BadgeData']"}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'notified': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'award_user'", 'to': "orm['auth.User']"})
+        },
+        'askbot.badgedata': {
+            'Meta': {'ordering': "('slug',)", 'object_name': 'BadgeData'},
+            'awarded_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'}),
+            'awarded_to': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'badges'", 'symmetrical': 'False', 'through': "orm['askbot.Award']", 'to': "orm['auth.User']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '50', 'db_index': 'True'})
+        },
+        'askbot.comment': {
+            'Meta': {'ordering': "('-added_at',)", 'object_name': 'Comment', 'db_table': "u'comment'"},
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'comment': ('django.db.models.fields.CharField', [], {'max_length': '2048'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'html': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '2048'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'offensive_flag_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'score': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'comments'", 'to': "orm['auth.User']"})
+        },
+        'askbot.emailfeedsetting': {
+            'Meta': {'object_name': 'EmailFeedSetting'},
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
+            'feed_type': ('django.db.models.fields.CharField', [], {'max_length': '16'}),
+            'frequency': ('django.db.models.fields.CharField', [], {'default': "'n'", 'max_length': '8'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'reported_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True'}),
+            'subscriber': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'notification_subscriptions'", 'to': "orm['auth.User']"})
+        },
+        'askbot.favoritequestion': {
+            'Meta': {'object_name': 'FavoriteQuestion', 'db_table': "u'favorite_question'"},
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['askbot.Question']"}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'user_favorite_questions'", 'to': "orm['auth.User']"})
+        },
+        'askbot.markedtag': {
+            'Meta': {'object_name': 'MarkedTag'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'reason': ('django.db.models.fields.CharField', [], {'max_length': '16'}),
+            'tag': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'user_selections'", 'to': "orm['askbot.Tag']"}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'tag_selections'", 'to': "orm['auth.User']"})
+        },
+        'askbot.question': {
+            'Meta': {'object_name': 'Question', 'db_table': "u'question'"},
+            'added_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'answer_accepted': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'answer_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'}),
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'questions'", 'to': "orm['auth.User']"}),
+            'close_reason': ('django.db.models.fields.SmallIntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'closed_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'closed_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'closed_questions'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'comment_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'}),
+            'deleted': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'deleted_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'deleted_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'deleted_questions'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'favorited_by': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'favorite_questions'", 'symmetrical': 'False', 'through': "orm['askbot.FavoriteQuestion']", 'to': "orm['auth.User']"}),
+            'favourite_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'}),
+            'followed_by': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'followed_questions'", 'symmetrical': 'False', 'to': "orm['auth.User']"}),
+            'html': ('django.db.models.fields.TextField', [], {'null': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_anonymous': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_activity_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_activity_by': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'last_active_in_questions'", 'to': "orm['auth.User']"}),
+            'last_edited_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'last_edited_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'last_edited_questions'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'locked': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'locked_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'locked_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'locked_questions'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'offensive_flag_count': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'score': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'summary': ('django.db.models.fields.CharField', [], {'max_length': '180'}),
+            'tagnames': ('django.db.models.fields.CharField', [], {'max_length': '125'}),
+            'tags': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'questions'", 'symmetrical': 'False', 'to': "orm['askbot.Tag']"}),
+            'text': ('django.db.models.fields.TextField', [], {'null': 'True'}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '300'}),
+            'view_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'}),
+            'vote_down_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'vote_up_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'wiki': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'wikified_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'})
+        },
+        'askbot.questionrevision': {
+            'Meta': {'ordering': "('-revision',)", 'object_name': 'QuestionRevision', 'db_table': "u'question_revision'"},
+            'author': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'questionrevisions'", 'to': "orm['auth.User']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_anonymous': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'revisions'", 'to': "orm['askbot.Question']"}),
+            'revised_at': ('django.db.models.fields.DateTimeField', [], {}),
+            'revision': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'summary': ('django.db.models.fields.CharField', [], {'max_length': '300', 'blank': 'True'}),
+            'tagnames': ('django.db.models.fields.CharField', [], {'max_length': '125'}),
+            'text': ('django.db.models.fields.TextField', [], {}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '300'})
+        },
+        'askbot.questionview': {
+            'Meta': {'object_name': 'QuestionView'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'viewed'", 'to': "orm['askbot.Question']"}),
+            'when': ('django.db.models.fields.DateTimeField', [], {}),
+            'who': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'question_views'", 'to': "orm['auth.User']"})
+        },
+        'askbot.repute': {
+            'Meta': {'object_name': 'Repute', 'db_table': "u'repute'"},
+            'comment': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'negative': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'positive': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'question': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['askbot.Question']", 'null': 'True', 'blank': 'True'}),
+            'reputation': ('django.db.models.fields.IntegerField', [], {'default': '1'}),
+            'reputation_type': ('django.db.models.fields.SmallIntegerField', [], {}),
+            'reputed_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['auth.User']"})
+        },
+        'askbot.tag': {
+            'Meta': {'ordering': "('-used_count', 'name')", 'object_name': 'Tag', 'db_table': "u'tag'"},
+            'created_by': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'created_tags'", 'to': "orm['auth.User']"}),
+            'deleted': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'deleted_at': ('django.db.models.fields.DateTimeField', [], {'null': 'True', 'blank': 'True'}),
+            'deleted_by': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'deleted_tags'", 'null': 'True', 'to': "orm['auth.User']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '255'}),
+            'used_count': ('django.db.models.fields.PositiveIntegerField', [], {'default': '0'})
+        },
+        'askbot.vote': {
+            'Meta': {'unique_together': "(('content_type', 'object_id', 'user'),)", 'object_name': 'Vote', 'db_table': "u'vote'"},
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'votes'", 'to': "orm['auth.User']"}),
+            'vote': ('django.db.models.fields.SmallIntegerField', [], {}),
+            'voted_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'})
+        },
+        'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        'auth.permission': {
+            'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'auth.user': {
+            'Meta': {'object_name': 'User'},
+            'about': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'bronze': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'consecutive_days_visit_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'country': ('django_countries.fields.CountryField', [], {'max_length': '2', 'blank': 'True'}),
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'date_of_birth': ('django.db.models.fields.DateField', [], {'null': 'True', 'blank': 'True'}),
+            'display_tag_filter_strategy': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'email_isvalid': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'email_key': ('django.db.models.fields.CharField', [], {'max_length': '32', 'null': 'True'}),
+            'email_tag_filter_strategy': ('django.db.models.fields.SmallIntegerField', [], {'default': '1'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'gold': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'gravatar': ('django.db.models.fields.CharField', [], {'max_length': '32'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'has_custom_avatar': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'has_valid_gravatar': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'ignored_tags': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'interesting_tags': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'last_seen': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'location': ('django.db.models.fields.CharField', [], {'max_length': '100', 'blank': 'True'}),
+            'new_response_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'questions_per_page': ('django.db.models.fields.SmallIntegerField', [], {'default': '10'}),
+            'real_name': ('django.db.models.fields.CharField', [], {'max_length': '100', 'blank': 'True'}),
+            'reputation': ('django.db.models.fields.PositiveIntegerField', [], {'default': '1'}),
+            'seen_response_count': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
+            'show_country': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'silver': ('django.db.models.fields.SmallIntegerField', [], {'default': '0'}),
+            'status': ('django.db.models.fields.CharField', [], {'default': "'w'", 'max_length': '2'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'}),
+            'website': ('django.db.models.fields.URLField', [], {'max_length': '200', 'blank': 'True'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        }
+    }
+
+    complete_apps = ['askbot']
diff --git a/askbot/models/__init__.py b/askbot/models/__init__.py
index 098cfa1f..f3ba2d88 100644
--- a/askbot/models/__init__.py
+++ b/askbot/models/__init__.py
@@ -58,6 +58,7 @@ User.add_to_class('reputation',
     models.PositiveIntegerField(default=const.MIN_REPUTATION)
 )
 User.add_to_class('gravatar', models.CharField(max_length=32))
+User.add_to_class('has_valid_gravatar', models.BooleanField(default=False))
 User.add_to_class('has_custom_avatar', models.BooleanField(default=False))
 User.add_to_class('gold', models.SmallIntegerField(default=0))
 User.add_to_class('silver', models.SmallIntegerField(default=0))
@@ -146,12 +147,24 @@ def user_update_has_custom_avatar(self):
     avatar application is installed.
     Saves the object.
     """
+
     if self.avatar_set.count() > 0:
         self.has_custom_avatar = True
     else:
         self.has_custom_avatar = False
     self.save()
 
+def user_update_has_valid_gravatar(self):
+    '''updates the field has_valid_gravatar'''
+
+    gravatar_url = "http://www.gravatar.com/avatar/%s?d=404" % self.gravatar
+    code = urllib.urlopen(gravatar_url).getcode()
+    if urllib.urlopen(gravatar_url).getcode() != 404:
+        self.has_valid_gravatar = True
+    else:
+        self.has_valid_gravatar = False
+    self.save()
+
 
 def user_get_old_vote_for_post(self, post):
     """returns previous vote for this post
@@ -2011,6 +2024,7 @@ User.add_to_class('get_avatar_url', user_get_avatar_url)
 User.add_to_class('get_gravatar_url', user_get_gravatar_url)
 User.add_to_class('get_anonymous_name', user_get_anonymous_name)
 User.add_to_class('update_has_custom_avatar', user_update_has_custom_avatar)
+User.add_to_class('update_has_valid_gravatar', user_update_has_valid_gravatar)
 User.add_to_class('post_question', user_post_question)
 User.add_to_class('edit_question', user_edit_question)
 User.add_to_class('retag_question', user_retag_question)
@@ -2555,6 +2569,9 @@ def set_user_has_custom_avatar_flag(instance, created, **kwargs):
 def update_user_has_custom_avatar_flag(instance, **kwargs):
     instance.user.update_has_custom_avatar()
 
+def set_user_has_valid_gravatar_flag(instance, created, **kwargs):
+    instance.user.update_has_valid_gravatar()
+
 #signal for User model save changes
 django_signals.pre_save.connect(calculate_gravatar_hash, sender=User)
 django_signals.post_save.connect(add_missing_subscriptions, sender=User)
@@ -2566,6 +2583,8 @@ django_signals.post_save.connect(
                             record_favorite_question,
                             sender=FavoriteQuestion
                         )
+django_signals.post_save.connect(set_user_has_valid_gravatar_flag, sender=User)
+
 if 'avatar' in django_settings.INSTALLED_APPS:
     from avatar.models import Avatar
     django_signals.post_save.connect(
diff --git a/askbot/models/question.py b/askbot/models/question.py
index 330d3fdb..9f4eb769 100644
--- a/askbot/models/question.py
+++ b/askbot/models/question.py
@@ -373,7 +373,10 @@ class QuestionQuerySet(models.query.QuerySet):
         u_id = u_id.union(
                     set(Answer.objects.filter(id__in=a_id).values_list('author', flat=True))
                 )
-        contributors = User.objects.filter(id__in=u_id).order_by('?')
+
+        from askbot.conf import settings as askbot_settings
+        avatar_limit = askbot_settings.SIDEBAR_MAIN_AVATAR_LIMIT
+        contributors = User.objects.filter(id__in=u_id).order_by('-has_valid_gravatar', '?')[:avatar_limit]
         #print contributors
         #could not optimize this query with indices so it was split into what's now above
         #contributors = User.objects.filter(