Use activerecord-import to re-save ServiceUser objects. We should do the same in ReceiveLocalBatch.

Gemfile

@@ -5,6 +5,7 @@ gem 'mysql2', '0.2.6'
 #gem 'sqlite3'
 gem 'rails', '3.0.3'
 gem 'foreigner', '0.9.1'
+gem 'activerecord-import'
 
 gem 'bundler', '>= 1.0.0'
 gem 'chef', '0.9.12', :require => false

Gemfile.lock

@@ -94,6 +94,8 @@ GEM
       activesupport (= 3.0.3)
       arel (~> 2.0.2)
       tzinfo (~> 0.3.23)
+    activerecord-import (0.2.7)
+      activerecord (~> 3.0.0)
     activeresource (3.0.3)
       activemodel (= 3.0.3)
       activesupport (= 3.0.3)
@@ -447,6 +449,7 @@ PLATFORMS
 
 DEPENDENCIES
   SystemTimer (= 1.2.1)
+  activerecord-import
   acts-as-taggable-on!
   addressable (= 2.2.4)
   aws (= 2.3.32)

app/models/services/facebook.rb

@@ -42,9 +42,10 @@ class Services::Facebook < Service
     url = "https://graph.facebook.com/me/friends?fields[]=name&fields[]=picture&access_token=#{URI.escape(self.access_token)}"
     response = Faraday.get(url)
     data = JSON.parse(response.body)['data']
-    data.each{ |p|
-      su = ServiceUser.find_or_initialize_by_service_id_and_uid(:service_id => self.id, :uid => p["id"])
-      su.update_attributes({:name => p["name"], :photo_url => p["picture"]})
+    ServiceUser.where(:service_id => self.id).delete_all
+    s_users = data.map{ |p|
+      ServiceUser.new(:service_id => self.id, :uid => p["id"], :photo_url => p["picture"], :name => p["name"])
     }
+    ServiceUser.import(s_users)
   end
 end