Implements iChain authentication

db/migrate/20141104131625_generate_username.rb

@@ -0,0 +1,18 @@
+class GenerateUsername < ActiveRecord::Migration
+  class TempUser < ActiveRecord::Base
+    self.table_name = 'users'
+    attr_accessible :username, :email
+  end
+
+  def change
+    TempUser.all.each do |user|
+      if user.username.blank?
+        username = user.email.split('@')[0]
+        if TempUser.find_by(username: username)
+          username = username + user.id.to_s
+        end
+        user.update_attributes(username: username)
+      end
+    end
+  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: 20141103132913) do
+ActiveRecord::Schema.define(version: 20141104131625) do
 
   create_table "ahoy_events", force: true do |t|
     t.uuid     "visit_id"