Question

我有这一管制人员守则:

  def update

    super
    respond_to do |format|
      format.html{redirect_to session[:redirect_to]}
    end
  end

我的阶级继承了设计。类似的话:

class Mobile::PasswordsController < Devise::PasswordsController

我发现这一错误:

AbstractController::DoubleRenderError in Mobile::PasswordsController#update

    Render and/or redirect were called multiple times in this action. 
Please note that you may only call render OR redirect, and at most once per action. 
Also note that neither redirect nor render terminate execution of the action, so 
if you want to exit an action after redirecting, you need to do something like 
"redirect_to(...) and return".

任何想法是怎样做的? 我知道这一方向,但我不知道如何正确。

感谢!

Answer 1

The update method of the Devise gem already has a redirect. Then you call your redirect and this causes the error. If you want to do a custom redirect you need to override a Devise method without a super call like this:

def update
    self.resource = resource_class.reset_password_by_token(params[resource_name])

    if resource.errors.empty?
      flash_message = resource.active_for_authentication? ? :updated : :updated_not_active
      set_flash_message(:notice, flash_message) if is_navigational_format?
      sign_in(resource_name, resource)
      respond_with resource, :location => #your_path_on_success
    else
      flash[:error] = resource.errors.full_messages
      redirect_to #your_path_on_failure
    end
  end

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