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救助 NoMethodError
原标题:rescue_from NoMethodError

存在这些问题。

试图

rescue_from NoMethodError, :with => :try_some_options

但它没有工作。

EDITED: For testing I m doing a simple redirect

def try_some_options
 redirect_to root_url
end

EDITED 2: Sample of my controller. Added (exception) as recommended below.

我知道错误的原因。 利用Austhlogic and authlogic_facebook_joint plugin。 当用户来自面板的“MyCar”模式时,与用户有关的“MyCar”模式并不像通常在用户在当地登记时那样创建。 自2006年以来 我确实呼吁使用模型,并在网站的不同部分提及用户汽车,我想做如下文所述,并最终把它列入我的申请——控制器。

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

EDITED 3: Hacked it for now since 我请我知道为何出现这一错误,但想说明如何从NoMethodError中解救。

class UsersController < ApplicationController
 before_filter :login_required, :except => [:new, :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
最佳回答

我在试图找到解决同一问题的办法时刚刚读过你的职位。 最后,我做了以下工作:

class ExampleController < ApplicationController
  rescue_from Exception, :with => :render_404
  ...

private

  def render_404(exception = nil)
    logger.info "Exception, redirecting: #{exception.message}" if exception
    render(:action => :index)
  end
end

这对我来说是好的。 这是一种 catch然的局面,但是它的确可以帮助你。 一切最好。

问题回答

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