change count>0 to exists

app/controllers/directory_items_controller.rb

@@ -26,7 +26,7 @@ class DirectoryItemsController < ApplicationController
       user_ids = UserSearch.new(params[:name]).search.pluck(:id)
       if user_ids.present?
         # Add the current user if we have at least one other match
-        if current_user && result.dup.where(user_id: user_ids).count > 0
+        if current_user && result.dup.where(user_id: user_ids).exists?
           user_ids << current_user.id
         end
         result = result.where(user_id: user_ids)

app/models/post_analyzer.rb

@@ -32,7 +32,7 @@ class PostAnalyzer
 
     cooked_stripped.css("img").reject do |t|
       if dom_class = t["class"]
-        (Post.white_listed_image_classes & dom_class.split).count > 0
+        (Post.white_listed_image_classes & dom_class.split).exists?
       end
     end.count
   end

app/serializers/post_serializer.rb

@@ -243,7 +243,7 @@ class PostSerializer < BasicPostSerializer
         summary[:can_defer_flags] = true if scope.is_staff? &&
                                                    PostActionType.flag_types.values.include?(id) &&
                                                    active_flags.present? && active_flags.has_key?(id) &&
-                                                   active_flags[id].count > 0
+                                                   active_flags[id].exists?
       end
 
       if actions.present? && actions.has_key?(id)

app/serializers/user_serializer.rb

@@ -369,7 +369,7 @@ class UserSerializer < BasicUserSerializer
   end
 
   def has_title_badges
-    object.badges.where(allow_title: true).count > 0
+    object.badges.where(allow_title: true).exists?
   end
 
   def user_fields