Mailboxer Gem使用多个模型

Question

我有两个模型User和employee，它们需要相互交互。这是一个基于示例应用程序(controller)的控制器。我需要它对两个模型都有效，但是为def添加if/else语句来确定是否有员工或用户登录，会显示“堆栈级别太深”的错误。我是rails的新手，在多次谷歌搜索之后，我不能理解我的错误是什么。消息传递应该在这两个模型之间进行，发起者应该是用户。(更新:我找到了一个Mailboxer Gem--Restrict messaging的帖子)非常感谢！

class ConversationsController < ApplicationController
  before_filter :authenticate_employee! or authenticate_user!
  helper_method :mailbox, :conversation

  def create
    recipient_emails = conversation_params(:recipients).split(',')
    recipients = User.where(email: recipient_emails).all
if(user_signed_in?)
    conversation = current_user.send_message(recipients, *conversation_params(:body, :subject)).conversation
else
  conversation = current_employee.send_message(recipients, *conversation_params(:body, :subject)).conversation
end
    redirect_to conversation_path(conversation)

end

  def reply
    current_user.reply_to_conversation(conversation, *message_params(:body, :subject))
    redirect_to conversation_path(conversation)
  end

  def trash
    conversation.move_to_trash(current_user)
    redirect_to :conversations
  end

  def untrash
    conversation.untrash(current_user)
    redirect_to :conversations
  end

  private

  def mailbox
    if(user_signed_in?)
    @mailbox ||= current_user.mailbox
else
    @mailbox ||= current_employee.mailbox
end
    redirect_to conversation_path(conversation)  
end


  def conversation
    @conversation ||= mailbox.conversations.find(params[:id])
  end

  def conversation_params(*keys)
    fetch_params(:conversation, *keys)
  end

  def message_params(*keys)
    fetch_params(:message, *keys)
  end

  def fetch_params(key, *subkeys)
    params[key].instance_eval do
      case subkeys.size
      when 0 then self
      when 1 then self[subkeys.first]
      else subkeys.map{|k| self[k] }
      end
    end
  end
end`

Answer 1

“堆栈级别太深”错误通常是由于无限循环/递归/重定向而出现的。看一下上面的代码，我没有看到任何明显的罪魁祸首，但是使用pry进行调试可能会帮助您找到它。