使用ajax请求在同一页面中显示部分 [英] Show partial in the same page using ajax request

问题描述

我是Rails的新手，我正在尝试为学校做一个简单的项目.

I'm new to rails and i'm trying to do a simple project for school.

我已经开始制作了如下的脚手架.

I have generated a scaffold as follows to begin.

rails generate scaffold Book title:string content:text code:string

我想做的是，当我单击链接时，在同一页面上的div中显示一个图书ID的列表(localhost:3000/books).我尝试遵循此过程，但似乎没有要正常工作，当我单击/books页面末尾的链接

What I'm trying to do, is to display a list of the books id's in a div on the same page (localhost:3000/books) when I click on a link. I tried to follow this procedure but it doesn't seem to work, nothing is visibly rendered on the page when I click the link at the end of the /books page

这是我的books/index.html.erb

Here is my books/index.html.erb

<p id="notice"><%= notice %></p>

<h1>Books</h1>

<table>
  <thead>
    <tr>
      <th>Title</th>
      <th>Content</th>
      <th>Code</th>
      <th colspan="3"></th>
    </tr>
  </thead>

  <tbody>
    <% @books.each do |book| %>
      <tr>
        <td><%= book.title %></td>
        <td><%= book.content %></td>
        <td><%= book.code %></td>
        <td><%= link_to 'Show', book %></td>
        <td><%= link_to 'Edit', edit_book_path(book) %></td>
        <td><%= link_to 'Destroy', book, method: :delete, data: { confirm: 'Are you sure?' } %></td>
      </tr>
    <% end %>
  </tbody>
</table>

<br>

<%= link_to 'New Book', new_book_path %>

<br>

<%= link_to 'All books', books_path, remote: true %>
<br>
<br>
<div id="content" >
</div>

我的books_controller的索引方法

my books_controller's index method

def index
    @books = Book.all

    respond_to do |format|
      format.html
      format.js
    end
  end

部分_books

<% @books.each do |book| %>
    <div class="book">
      <%= book.id %>
    </div>
<% end %>

和books/index.js.erb

and the books/index.js.erb

$("#content").html("<%= j (render 'books') %>");

当我单击应该呈现部分内容的链接时，我在终端中得到了此内容，页面上没有任何显示.

When I click on the link that should render the partial, I get this in the terminal and nothing is displayed on the page.

Started GET "/books" for 127.0.0.1 at 2017-05-12 17:35:02 +0200
Processing by BooksController#index as JS
  Rendering books/index.js.erb
  Book Load (0.3ms)  SELECT "books".* FROM "books"
  Rendered books/_books.html.erb (2.4ms) [cache miss]
  Rendered books/index.js.erb (3.9ms)
Completed 200 OK in 8ms (Views: 6.0ms | ActiveRecord: 0.3ms)

我想我缺少了一些东西，但是我真的不知道为什么.有任何想法吗?谢谢

I imagine I am missing something, but I really can't figure out why. Any ideas? thank you

PS:Rails版本:5.1.0和ruby 2.4.0

PS: Rails version: 5.1.0 and ruby 2.4.0

推荐答案

Rails 5.1对jQuery没有依赖性.这段代码:

Rails 5.1 doesn't have a dependency on jQuery. This code:

$('#content').html("<%= j (render 'books') %>");

是jQuery代码.如果您添加jquery-rails gem并遵循文档，则您的代码应该可以使用.

is jQuery code. If you add the jquery-rails gem and follow the documentation, your code should work.

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