use info_updated_at instead of updated_at

db/migrate/20140717085945_add_info_updated_at_to_projects.rb

@@ -0,0 +1,5 @@
+class AddInfoUpdatedAtToProjects < ActiveRecord::Migration
+  def change
+    add_column :projects, :info_updated_at, :timestamp
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20140620124628) do
+ActiveRecord::Schema.define(version: 20140717085945) do
 
   create_table "collaborators", force: true do |t|
     t.integer  "project_id"
@@ -52,6 +52,7 @@
     t.string   "github_id"
     t.string   "host",                   default: "github"
     t.boolean  "hold_tips",              default: false
+    t.datetime "info_updated_at"
   end
 
   add_index "projects", ["full_name"], name: "index_projects_on_full_name", unique: true

lib/bitcoin_tipper.rb

@@ -15,10 +15,10 @@ def self.work withdraw = true
     end
 
     Rails.logger.info "Updating projects info..."
-    Project.order(:updated_at => :desc).last(20).each do |project|
+    Project.order(:info_updated_at => :desc).last(20).each do |project|
       Rails.logger.info " Project #{project.id} #{project.full_name}"
       project.update_info
-      project.touch
+      project.touch(:info_updated_at)
     end
 
     if withdraw