Question

我需要在更新前调用方法来检查PayPal详细信息是否正确。

我在User.rb中添加了这个：

 before_update :verify

 private
  def verify
  require 'httpclient'
  require 'xmlsimple'
  clnt = HTTPClient.new
    ....
      if account_status == "VERIFIED" 
        current_user.verified = "verified"
        current_user.save
        flash[:notice] = "Your account is verified"
      else 
        redirect_to :back
        flash[:error] = "Sorry, your account is not verified or you entered wrong credentials"
      end
    else
      redirect_to :back
      flash[:error] = "Your account is not verified or you entered wrong credentials"
    ...
end

end

编辑：试过这个：

   class RegistrationsController < Devise::RegistrationsController

   before_filter :verify, :only => :update 
     def verify
          ...
     end
    end

但它没有打电话。

也许我应该从这里打电话（但我不知道如何以及在哪里）：

    class RegistrationsController < Devise::RegistrationsController

      def create
 build_resource

 if resource.save
  if resource.active_for_authentication?
    set_flash_message :notice, :signed_up if is_navigational_format?
    sign_in(resource_name, resource)
    respond_with resource, :location => after_sign_up_path_for(resource)
  else
    set_flash_message :notice, :"signed_up_but_#{resource.inactive_message}" if is_navigational_format?
    expire_session_data_after_sign_in!
    respond_with resource, :location => after_inactive_sign_up_path_for(resource)
  end
else
  redirect_to :back
  flash[:error] = "Your email has been already taken!"
 end
    end

      def update
    self.resource = resource_class.to_adapter.get!(send(:"current_#{resource_name}").to_key)

     params[:user].delete(:password) if params[:user][:password].blank?
     params[:user].delete(:password_confirmation) if params[:user][:password_confirmation].blank?

    if resource.update_attributes(params[resource_name]) 
      set_flash_message :notice, :updated if is_navigational_format?
      sign_in resource_name, resource, :bypass => true
      respond_with resource, :location => after_update_path_for(resource)
 else
       clean_up_passwords(resource)
      respond_with_navigational(resource){ render_with_scope :edit }
    end
  end

有人会注意到代码中的一些错误吗？

Answer 1

在User.rb中，使用before_save宏而不是before_update，因为before_update不存在

还有一件事，在您的用户模型中，flash无法访问，因为它只是在控制器中注入。你改为抛出验证错误或

class User < ActiveRecord::Base

    before_save :verify

    private
    def verify(record)

      #... do checking ... and on error
      record.errors ... #is accesable, set your error here if you want to read it in controller 
       # rise here   error if you want
    end

end

有关activerecord回调的更多信息

http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html

Answer 2

这是正确答案：

class RegistrationsController < Devise::RegistrationsController

  before_filter :verify, :only => :update 
  def verify
    ...
  end
end

感谢您的帮助

无法使before_update过滤器正常工作

2 个答案: