ruby-on-rails – rescue_from NoMethodError

试图做一个

rescue_from NoMethodError,:with => :try_some_options

但它不起作用.

编辑：
为了测试我正在做一个简单的重定向

def try_some_options
 redirect_to root_url
end

编辑2：
我的控制器样本.添加(例外),如下所示.

我知道我收到错误的原因.使用Authlogic和authlogic_facebook_connect插件.当从facebook插件创建用户时,如果用户在本地注册,则不创建与用户相关联的“MyCar”模型.因为我确实调用了用户模型并在网站的不同部分引用了用户汽车,所以我想做一些类似于你在下面看到的内容并最终将它放在我的application_controller中.

class UsersController < ApplicationController
 before_filter :login_required,:except => [:new,:create]
 rescue_from NoMethodError,:with => :try_some_options

 ...

 def show
    store_target_location
    @user = current_user
  end

 def create
  @user = User.new(params[:user])
  if @user.save
    MyCar.create!(:user => @user)
    flash[:notice] = "Successfully created profile."
    redirect_to profile_path
  else
    render :action => 'new'
  end
 end
 ...

 protected

 def try_some_options(exception)
    if logged_in? && current_user.my_car.blank?
       MyCar.create!(:user => current_user)
       redirect_to_target_or_default profile_path
    end
 end
 ...
end

编辑3：因为我知道错误出现的原因现在已经被黑了,但是想知道如何使用rescue_from NoMethodError

class UsersController < ApplicationController
 before_filter :login_required,:create]
 before_filter :add_car_if_missing

 def add_car_if_missing
   if logged_in? && current_user.my_car.blank?
     MyCar.create!(:user => current_user)
   end
 end
end