1 files changed, 21 insertions, 20 deletions
diff --git a/app/models/favorite.rb b/app/models/favorite.rb
index 701b8ca..5962f1c 100644
--- a/app/models/favorite.rb
+++ b/app/models/favorite.rb
@@ -2,30 +2,31 @@ class Favorite < ActiveRecord::Base
   belongs_to :tweet
   belongs_to :user
 
-  # Registers favorite event in bulk from an array of Streaming API events.
-  # This method doesn't update Tweet#reactions_count.
-  #
-  # @param [Array] array An array of Streaming API events.
-  def self.create_bulk_from_json(array)
-    return if array.empty?
+  class << self
+    # Registers favorite event in bulk from an array of Streaming API events.
+    # This method doesn't update Tweet#reactions_count.
+    #
+    # @param [Array] array An array of Streaming API events.
+    def create_bulk_from_json(array)
+      return if array.empty?
 
-    objects = array.map do |json|
-      {
-        user_id: json[:source][:id],
-        tweet_id: json[:target_object][:id]
+      keys = [:user_id, :tweet_id]
+      objects = array.map {|json|
+        [json[:source][:id], json[:target_object][:id]]
       }
-    end
 
-    self.import(objects.first.keys, objects.map(&:values), ignore: true)
-  end
+      import(keys, objects, ignore: true)
+    end
 
-  # Unregisters favorite event in bulk from an array of Streaming API 'unfavorite' events.
-  # This method doesn't update Tweet#reactions_count.
-  #
-  # @param [Array] array An array of Streaming API events.
-  def self.delete_bulk_from_json(array)
-    array.each do |json|
-      self.delete_all(user_id: json[:source][:id], tweet_id: json[:target_object][:id])
+    # Unregisters favorite event in bulk from an array of Streaming API 'unfavorite' events.
+    # This method doesn't update Tweet#reactions_count.
+    #
+    # @param [Array] array An array of Streaming API events.
+    def delete_bulk_from_json(array)
+      array.each do |json|
+        delete_all(user_id: json[:source][:id],
+                   tweet_id: json[:target_object][:id])
+      end
     end
   end
 end