是activeuuid和rails 4.1.1兼容還是有問題？

Question

這裏是我想用來實現寶石activeuuid一點的代碼片段：

的Gemfile

source 'https://rubygems.org' 
gem 'rails', '4.1.1' 
gem 'pg' 
gem 'sass-rails', '~> 4.0.3' 
gem 'uglifier', '>= 1.3.0' 
gem 'coffee-rails', '~> 4.0.0' 
gem 'jquery-rails' 
gem 'turbolinks' 
gem 'jbuilder', '~> 2.0' 
gem 'sdoc', '~> 0.4.0',   group: :doc 
gem 'spring',  group: :development 
gem 'activeuuid' 

User.rb

class User < ActiveRecord::Base 
    include ActiveUUID::UUID 
end 

遷移xxxxxxxxx_create_users.rb

class CreateUsers < ActiveRecord::Migration 
    def self.up 
    create_table :users, :id => false do |t| 
     t.uuid :id, :primary_key => true 
     t.string :email 

     t.timestamps 
    end 
    end 

    def self.down 
    drop_table :users 
    end 

end 

Tyring一個簡單的查詢是不是證明是捆綁甚至或控制檯重新開始之後fisible這裏..

2.1.1 :016 > User.all 
    NoMethodError: undefined method `set_primary_key' for User (call 'User.connection' to establish a connection):Class 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activerecord-4.1.1/lib/active_record/dynamic_matchers.rb:26:in `method_missing' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activeuuid-ps-0.1.2/lib/activeuuid/uuid.rb:54:in `block in <module:UUID>' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/concern.rb:120:in `class_eval' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/concern.rb:120:in `append_features' 
     from /home/sahil/projects/test_projects/myapp/app/models/user.rb:3:in `include' 
     from /home/sahil/projects/test_projects/myapp/app/models/user.rb:3:in `<class:User>' 
     from /home/sahil/projects/test_projects/myapp/app/models/user.rb:1:in `<top (required)>' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:443:in `load' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:443:in `block in load_file' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:633:in `new_constants_in' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:442:in `load_file' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:342:in `require_or_load' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:480:in `load_missing_constant' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activesupport-4.1.1/lib/active_support/dependencies.rb:180:in `const_missing' 
     from (irb):16 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/railties-4.1.1/lib/rails/commands/console.rb:90:in `start' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/railties-4.1.1/lib/rails/commands/console.rb:9:in `start' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:69:in `console' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/railties-4.1.1/lib/rails/commands/commands_tasks.rb:40:in `run_command!' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/railties-4.1.1/lib/rails/commands.rb:17:in `<top (required)>' 
     from bin/rails:4:in `require' 
     from bin/rails:4:in `<main>' 

甚至

2.1.1 :029 > User.count 
    NoMethodError: undefined method `set_primary_key' for User (call 'User.connection' to establish a connection):Class 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activerecord-4.1.1/lib/active_record/dynamic_matchers.rb:26:in `method_missing' 
     from /home/sahil/.rvm/gems/ruby-2.1.1@myapp/gems/activeuuid-ps-0.1.2/lib/activeuuid/uuid.rb:54:in `block in <module:UUID>' 
     .......... 
     .......... 
     from bin/rails:4:in `require' 
     from bin/rails:4:in `<main>' 

請告訴我發生了什麼錯在這裏。我是否缺少一些所需的依賴關係？

Answer 1

找到了一個更好的解決方案，並按照展示實施：http://www.codesapling.com/blog/2014/05/24/using-uuid-as-primary-key-in-rails4-with-postgres/