code folding fix

app/models/concerns/issuable.rb

@@ -134,9 +134,9 @@ module Issuable
   end
 
   def subscribe_status(user)
-    sub = subscribes.find_by_user_id(user.id)
-    if sub
-      return sub.subscribed
+    subscribe = subscribes.find_by_user_id(user.id)
+    if subscribe
+      return subscribe.subscribed
     end
 
     participants.include?(user)

app/models/subscribe.rb

@@ -1,3 +1,6 @@
 class Subscribe < ActiveRecord::Base
   belongs_to :user
+
+  validates :issue_id, uniqueness: { scope: :user_id, allow_nil: true }
+  validates :merge_request_id, uniqueness: { scope: :user_id, allow_nil: true }
 end

app/services/notification_service.rb

@@ -368,16 +368,16 @@ class NotificationService
 
     recipients = reject_muted_users(recipients, project)
     recipients = reject_mention_users(recipients, project)
-    recipients = add_subscribers(recipients, project)
+    recipients = add_subscribed_users(recipients, project)
     recipients = recipients.concat(project_watchers(project)).uniq
     recipients = reject_unsubscribed_users(recipients, target)
     recipients
   end
 
-  def add_subscribers(recipients, target)
-    subs = target.subscribes
-    if subs.any?
-      recipients.merge(subs.where("subscribed is true").map(&:user))
+  def add_subscribed_users(recipients, target)
+    subscribes = target.subscribes
+    if subscribes.any?
+      recipients.merge(subscribes.where("subscribed is true").map(&:user))
     else
       recipients
     end

db/migrate/20150313012111_create_subscribes_table.rb

@@ -8,5 +8,9 @@ class CreateSubscribesTable < ActiveRecord::Migration
       
       t.timestamps
     end
+
+    add_index :subscribes, :user_id
+    add_index :subscribes, :issue_id
+    add_index :subscribes, :merge_request_id
   end
 end

db/schema.rb

@@ -406,6 +406,10 @@ ActiveRecord::Schema.define(version: 20150313012111) do
     t.datetime "updated_at"
   end
 
+  add_index "subscribes", ["issue_id"], name: "index_subscribes_on_issue_id", using: :btree
+  add_index "subscribes", ["merge_request_id"], name: "index_subscribes_on_merge_request_id", using: :btree
+  add_index "subscribes", ["user_id"], name: "index_subscribes_on_user_id", using: :btree
+
   create_table "taggings", force: true do |t|
     t.integer  "tag_id"
     t.integer  "taggable_id"