FIX: only show 'defer flags' when there are active flags on the post

app/models/post_action.rb

@@ -73,6 +73,23 @@ class PostAction < ActiveRecord::Base
     user_actions
   end
 
+  def self.active_flags_counts_for(collection)
+    return {} if collection.blank?
+
+    collection_ids = collection.map(&:id)
+
+    post_actions = PostAction.active.flags.where(post_id: collection_ids)
+
+    user_actions = {}
+    post_actions.each do |post_action|
+      user_actions[post_action.post_id] ||= {}
+      user_actions[post_action.post_id][post_action.post_action_type_id] ||= []
+      user_actions[post_action.post_id][post_action.post_action_type_id] << post_action
+    end
+
+    user_actions
+  end
+
   def self.count_per_day_for_type(post_action_type, since_days_ago=30)
     unscoped.where(post_action_type_id: post_action_type)
             .where('created_at > ?', since_days_ago.days.ago)

app/serializers/post_serializer.rb

@@ -154,10 +154,12 @@ class PostSerializer < BasicPostSerializer
 
       count = object.send(count_col) if object.respond_to?(count_col)
       count ||= 0
-      action_summary = {id: id,
+      action_summary = {
+        id: id,
         count: count,
         hidden: (sym == :vote),
-                        can_act: scope.post_can_act?(object, sym, taken_actions: post_actions)}
+        can_act: scope.post_can_act?(object, sym, taken_actions: post_actions)
+      }
 
       if sym == :notify_user && scope.current_user.present? && scope.current_user == object.user
         action_summary[:can_act] = false # Don't send a pm to yourself about your own post, silly
@@ -165,7 +167,10 @@ class PostSerializer < BasicPostSerializer
 
       # The following only applies if you're logged in
       if action_summary[:can_act] && scope.current_user.present?
-        action_summary[:can_defer_flags] = scope.is_staff? && PostActionType.flag_types.values.include?(id)
+        action_summary[:can_defer_flags] = scope.is_staff? &&
+                                           PostActionType.flag_types.values.include?(id) &&
+                                           active_flags.present? &&
+                                           active_flags.count > 0
       end
 
       if post_actions.present? && post_actions.has_key?(id)
@@ -245,4 +250,9 @@ class PostSerializer < BasicPostSerializer
     def post_actions
       @post_actions ||= (@topic_view.present? && @topic_view.all_post_actions.present?) ? @topic_view.all_post_actions[object.id] : nil
     end
+
+    def active_flags
+      @active_flags ||= (@topic_view.present? && @topic_view.all_active_flags.present?) ? @topic_view.all_active_flags[object.id] : nil
+    end
+
 end

lib/topic_view.rb

@@ -188,7 +188,9 @@ class TopicView
   end
 
   def has_deleted?
-    @predelete_filtered_posts.with_deleted.where("deleted_at IS NOT NULL").exists?
+    @predelete_filtered_posts.with_deleted
+                             .where("posts.deleted_at IS NOT NULL")
+                             .exists?
   end
 
   def topic_user
@@ -199,7 +201,11 @@ class TopicView
   end
 
   def post_counts_by_user
-    @post_counts_by_user ||= Post.where(topic_id: @topic.id).group(:user_id).order('count_all desc').limit(24).count
+    @post_counts_by_user ||= Post.where(topic_id: @topic.id)
+                                 .group(:user_id)
+                                 .order("count_all DESC")
+                                 .limit(24)
+                                 .count
   end
 
   def participants
@@ -214,6 +220,10 @@ class TopicView
     @all_post_actions ||= PostAction.counts_for(@posts, @user)
   end
 
+  def all_active_flags
+    @all_active_flags ||= PostAction.active_flags_counts_for(@posts)
+  end
+
   def links
     @links ||= TopicLink.topic_map(guardian, @topic.id)
   end
@@ -282,8 +292,7 @@ class TopicView
   def filter_posts_by_ids(post_ids)
     # TODO: Sort might be off
     @posts = Post.where(id: post_ids, topic_id: @topic.id)
-                 .includes(:user)
-                 .includes(:reply_to_user)
+                 .includes(:user, :reply_to_user)
                  .order('sort_order')
     @posts = @posts.with_deleted if @guardian.can_see_deleted_posts?
     @posts
@@ -316,7 +325,6 @@ class TopicView
   end
 
   def setup_filtered_posts
-
     # Certain filters might leave gaps between posts. If that's true, we can return a gap structure
     @contains_gaps = false
     @filtered_posts = unfiltered_posts
@@ -335,7 +343,7 @@ class TopicView
     # Username filters
     if @username_filters.present?
       usernames = @username_filters.map{|u| u.downcase}
-      @filtered_posts = @filtered_posts.where('post_number = 1 or user_id in (select u.id from users u where username_lower in (?))', usernames)
+      @filtered_posts = @filtered_posts.where('post_number = 1 OR posts.user_id IN (SELECT u.id FROM users u WHERE username_lower IN (?))', usernames)
       @contains_gaps = true
     end
 

spec/components/topic_view_spec.rb

@@ -167,6 +167,29 @@ describe TopicView do
       end
     end
 
+    context '.all_active_flags' do
+      it 'is blank at first' do
+        topic_view.all_active_flags.should be_blank
+      end
+
+      it 'returns the active flags' do
+        PostAction.act(moderator, p1, PostActionType.types[:off_topic])
+        PostAction.act(coding_horror, p1, PostActionType.types[:off_topic])
+
+        topic_view.all_active_flags[p1.id][PostActionType.types[:off_topic]].count.should == 2
+      end
+
+      it 'returns only the active flags' do
+        PostAction.act(moderator, p1, PostActionType.types[:off_topic])
+        PostAction.act(coding_horror, p1, PostActionType.types[:off_topic])
+
+        PostAction.defer_flags!(p1, moderator)
+
+        topic_view.all_active_flags[p1.id].should == nil
+      end
+    end
+
+
     context '.read?' do
       it 'tracks correctly' do
         # anon is assumed to have read everything