Rails 3.2 ActionMailerデモ失敗

Question

かなり長い間レール3を使用していましたが、今までActionMailerを使用する必要はありませんでした。私はguideに続き、すぐに使えると期待しています。しかし、内部レールのコードの中に深くあるエラーが発生したようです。残念ながら、私はこのエラーについては言及していません。

マイメーラークラスがある：私はレール3.2.1を使用してい

UserMailer.welcome_email 
NoMethodError: undefined method `protected_instance_variables=' for ActionController::Base:Class 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_controller/metal/compatibility.rb:22:in `block in <module:Compatibility>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/concern.rb:117:in `class_eval' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/concern.rb:117:in `append_features' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_controller/base.rb:232:in `include' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_controller/base.rb:232:in `<class:Base>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_controller/base.rb:171:in `<module:ActionController>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_controller/base.rb:3:in `<top (required)>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_view/test_case.rb:11:in `<class:TestCase>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_view/test_case.rb:10:in `<module:ActionView>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/actionpack-3.2.1/lib/action_view/test_case.rb:8:in `<top (required)>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/prototype-rails-3.2.1/lib/prototype-rails/on_load_action_view.rb:17:in `<top (required)>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `require' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:251:in `block in require' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:234:in `block in load_dependency' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:639:in `new_constants_in' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:234:in `load_dependency' 
... 23 levels... 
    from /users/user/Documents/element/app/mailers/user_mailer.rb:1:in `<top (required)>' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:469:in `load' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:469:in `block in load_file' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:639:in `new_constants_in' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:468:in `load_file' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:353:in `require_or_load' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:502:in `load_missing_constant' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:192:in `block in const_missing' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:190:in `each' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.2.1/lib/active_support/dependencies.rb:190:in `const_missing' 
    from (irb):1 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.2.1/lib/rails/commands/console.rb:47:in `start' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.2.1/lib/rails/commands/console.rb:8:in `start' 
    from /Users/user/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.2.1/lib/rails/commands.rb:41:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>' 

：

class UserMailer < ActionMailer::Base 
    default :from => "notifications@example.com" 

    def welcome_email 
    @url = "http://example.com/login" 
    mail(:to => "test@example.com", :subject => "Welcome to My Awesome Site") 
    end 
end 

私は私が手メーラーを使用しようとします。私は、protected_instance_variables = deprecatedのいくつかの言及を見ました。なぜなら、なぜそれがActionController :: Baseのために定義されていないのかを説明できるかもしれません。しかし、それはレールのバグであるように思え、ActionMailerが十分にテストされていると思います。誰にでもアイデアはありますか？私は3.2.1アプリケーション私のレールを開始するには、同様のエラーを経験した

おかげ

Answer 1

- プロトタイプレールの宝石を削除するには、私のためにそれを解決しました。

もちろん、私はプロトタイプを使用しているので、ここでは別の問題に対処しています。