Question

我遇到了从Heroku本地开发到生产的问题。除了我的“留言簿”控制器中的一个“新”动作之外，一切都很好。当我尝试导航到https://allbugsaside.herokuapp.com/guestbooks/new时，我收到一个错误，告诉我查看日志。当我运行Heroku日志时，除了发起请求之外，它并没有告诉我多少。

我有一种感觉，我可能会遇到这个问题，因为在我的“新”行动中，我打电话给。来自留言簿目前没有任何数据？只是一个理论。

任何人都可以协助解决这个问题吗？感谢。

class GuestbooksController < ApplicationController
    def index
        @guestbooks = Guestbook.all
    end

    def new
        @guestbook = Guestbook.new
        @guestbooks = Guestbook.all
        @guestbooks = Kaminari.paginate_array(@guestbooks).page(params[:page]).per(5)
    end

    def create
        @guestbook = Guestbook.new(guestbook_params)
        # @guestbooks = Guestbook.all.limit(1).page(params[:page])

        if @guestbook.save
            flash.now[:notice] = "Thanks for taking the time to write us! We greatly appreciate it!"
            render :new
        else
            flash.now[:notice] = "Your message failed to post, please try again"
            render :new
        end
    end

    private
    def guestbook_params
        params.require(:guestbook).permit(:name, :email, :message)
    end
end

这是我的new.html.erb

<h1 class="guestbook_head">Guestbook</h1><br/>

<div class="guestbook_text">
    <p>
        It is our goal to provide our customers with the best possible Pest Control Services and Solutions in the industry.

        Your comments and feedback are important to us.  They are a tool we use in order to keep on improving our experience, with you ….the customer. <br/><br/>
    </p>
</div>

<div class="paginate">
    <%= paginate @guestbooks %>
</div>

<div class="span1">
    <% @guestbooks.each do |g| %>
        <br/>
        <h4><%= g.name %>, <%= g.created_at %><br/></h4>
        <%= g.message %><br/>
        <p>-----------------------------------------------------------------------------------------------------------------------</p>
    <% end %>
</div>

<%= simple_form_for @guestbook, url: guestbooks_path, method: :post do |f| %>
    <div class="span2"><%= f.input :name %></div>
    <div class="span2"><%= f.input :email %></div>
    <div class="span3"><%= f.input :message %></div>
    <div class="span4"><%= f.button :submit %></div><br/><br/><br/>
<% end %>

这些是我的路线;

Rails.application.routes.draw do
  resources :pages, only: [:index] 
  get "/pages/home", to: "pages#home"
  get "/pages/about", to: "pages#about"
  get "/pages/pest_info", to: "pages#pest_info"
  get "/pages/annual_contracts", to: "pages#annual_contracts"
  get "/pages/monthly_info", to: "pages#monthly_info"
  get "/pages/snowplow", to: "pages#snowplow"
  get "/pages/gallery", to: "pages#gallery"
  resources :contact_form, only: [:new, :create]
  resources :guestbooks, only: [:new, :create]
  get "/guestbooks/index", to: "guestbooks#index"
  root "pages#home"
end

当我尝试访问该页面时，我收到500内部服务器错误。

2015-12-06T18:42:33.507953+00:00 heroku[router]: at=info method=GET path="/pages/about" host=allbugsaside.herokuapp.com request_id=e07095da-734c-4fe3-aaa8-6f68d86a8e20 fwd="96.248.110.224" dyno=web.1 connect=0ms service=7ms status=200 bytes=5022
2015-12-06T18:42:40.331424+00:00 heroku[router]: at=info method=GET path="/guestbooks/new" host=allbugsaside.herokuapp.com request_id=134c9aab-f559-4e95-bad5-c1037dd38291 fwd="96.248.110.224" dyno=web.1 connect=0ms service=8ms status=500 bytes=1754
2015-12-06T18:42:40.390097+00:00 heroku[router]: at=info method=GET path="/guestbooks/new" host=allbugsaside.herokuapp.com request_id=d552b372-80fa-4e76-83a3-371aa4f994ab fwd="96.248.110.224" dyno=web.1 connect=0ms service=7ms status=500 bytes=1754

Answer 1

您是否已完成heroku run rake db:migrate以更新数据库？当然，只有在本地环境中进行了新的迁移。如果这不能解决您的问题，请发布heroku的日志。

请记住，Rails约定使用index（在控制器中查看和def）来显示某些模型所需的所有对象。

在这里，您希望在new - 对象视图中显示它们。这是可能的，请小心。您的观点是new.html.erb吗？

另请注意，def new不是一个操作，它只是您的new.html.erb的控制器，它为视图提供数据，变量，重定向和其他内容。

Answer 2

我注意到您的页面/留言簿没有响应索引操作。你可以发布routes.rb

Ruby技术上是动态的：

<div class="container">
  <div class="header">
    <h1>Summary</h1></div>
  <table class="table">
    <caption>Use inline rows.</caption>
    <tbody>
      <tr>
        <th scope="row">Account Name: </th>
        <td>my_acc </td>
        <td style="font-weight: bold">Last Payment: </td>
        <td>100USD</td>
      </tr>
      <tr>
        <th scope="row">Account Balance: </th>
        <td>$10</td>
        <td style="font-weight: bold">Last Payment Date: </td>
        <td>11/25/2434</td>
      </tr>
      <tr>
        <th scope="row">Last Invoice: </th>
        <td>Larry</td>
      </tr>
    </tbody>
  </table>
</div>

但我不会这样做。重新定义变量并将其用作声明的引用与该句子一样难以阅读。

 @guestbooks = Guestbook.all
 @guestbooks = Kaminari.paginate_array(@guestbooks).page(params[:page]).per(5)

如果问题存在于生产中而不是dev中，则发布的代码不存在问题。这不是数据库中缺少数据的问题，但它可能是架构的问题。

从开发到生产时，Heroku路由/控制器问题？

2 个答案: