(未定义的方法`receipts_for'代表零:NilClass - MailBoxer Gem Rails

时间:2018-05-28 17:58:58

标签: ruby-on-rails ruby ruby-on-rails-4 rubygems mailboxer

我正在使用mailboxer gem在我的rails应用程序的用户之间构建消息传递系统。出于某种原因,我收到了这个错误:

(未定义的方法`receipts_for'代表nil:NilClass)

也许是因为我应该在我的控制器或mailboxer.rb中的某处定义'receipts_for'?我试了几件......但不幸的是,他们都没有成功。

这是我的routes.rb:

Rails.application.routes.draw do
  root   'static_pages#home'
  get    '/help',    to: 'static_pages#help'
  get    '/about',   to: 'static_pages#about'
  get    '/contact', to: 'static_pages#contact'
  get    '/signup',  to: 'users#new'
  get    '/login',   to: 'sessions#new'
  get    'search/index'
  post   '/login',   to: 'sessions#create'
  delete '/logout',  to: 'sessions#destroy'
  resources :users do
    member do
      get :following, :followers
    end
  end
  resources :conversations do
    resources :messages
  end
  resources :account_activations, only: [:edit]
  resources :password_resets,     only: [:new, :create, :edit, :update]
  resources :microposts,          only: [:create, :destroy]
  resources :relationships,       only: [:create, :destroy]
  resources :searches
end

这是我的对话控制器:

class ConversationsController < ApplicationController

  def show
    @conversation = current_user.mailbox.conversation.find(params[:id])
  end


  def new
    @recipients = User.find(params[:user_id])
  end

  def create
    recipient = User.find(params[:user_id])
    receipt = current_user.send_message(recipient, params[:body])
    redirect_to conversation_path(receipt.conversation)
  end

end

这是我的messages_controller:

class MessagesController < ApplicationController
  before_action :set_conversation

  def create
    receipt = current_user.send_message(@conversation, body)
    redirect_to receipt.conversation
  end

  private

  def set_conversation
    @conversation = current_user.mailbox.conversations.find(params[:conversation_id])
  end

end

我正在构建的消息传递系统是一个消息传递系统,其中'current_user'可以转到应用程序上任何用户的配置文件页面,并通过配置文件页面向他/她发送消息。所以这意味着我在我的用户模型的show.html.erb中渲染了对话模型的show.html.erb。以下是两种观点的代码:

show.html.erb - 用户模型:

<% provide(:title, @user.name) %>
<div class="row">
  <aside class="col-md-4">
    <section>
      <h1>
        <%= gravatar_for @user %>
        <%= @user.name %>
      </h1>
    </section>
    <section class="stats">
      <%= render 'shared/stats' %>
    </section>
      <h6>
        <%= @user.gender %>
      </h6>
    <%= render "conversations/conversation" %>
  </aside>
  <div class="col-md-8">
    <%= render 'follow_form' if logged_in? %>
    <% if @user.microposts.any? %>
      <h3>Microposts (<%= @user.microposts.count %>)</h3>
      <ol class="microposts">
        <%= render @microposts %>
      </ol>
      <%= will_paginate @microposts %>
    <% end %>
  </div>
</div>

_conversation.html.erb - 显示会话模型的视图。

<% @conversation.receipts_for(current_user).each do |receipt| %>
    <div>
        <%= receipt.message.body %>
    </div>
<% end %>


<%= form_tag conversation_messages_path(@conversation), method: post do  %>
    <div>
        <%= text_area_tag :body %>
    </div>

    <%= submit_tag %>
<% end %>

那么我怎么能为我的邮箱定义'receipts_for'方法呢?或者我的代码还有其他问题?

非常感谢任何帮助!

谢谢!

1 个答案:

答案 0 :(得分:2)

我会捎带@mu is too short所说的话。注意整个错误消息很重要。 “未定义的方法receipts_for for nil:NilClass”告诉你receipts_for方法的接收者是零。 @conversation.receipts_for(current_user)看起来是唯一使用receipts_for的地方,所以我会通过确保为@conversation分配现有ActiveRecord支持的会话对象的值来开始调试。

似乎有很多事情发生,所以我不知道如何为您提供快速解决方案。 ConversationsController#show方法@conversation= current_user.mailbox.conversation.find(params[:id])中的值分配看起来很麻烦。这告诉我,您正在寻找基于属于conversation的{​​{1}}的{​​{1}},这可能是您想要的(在这种情况下,您需要拥有相应的mailbox您的模型中定义了associations

但是,由于链以current_user结尾,我猜测不需要conversation.find(params[:id])。或者,如果您的current_user.mailbox实际上没有会话ID,那么也许这就是您需要关注的内容。

好消息是,如果你坚持byebug(或binding.pry,取决于你已经安装的内容),你可以找出如何定义params @conversation show 1}}方法并在您的视图中部分:

# In the controller:

  def show
    binding.pry
    @conversation = current_user.mailbox.conversation.find(params[:id])
  end


# in the view
<% binding.pry %>