Rails 3.1 Ajax 问题

问题描述

我有一个名为 post 的脚手架，它有一个标题和一个描述.在我的布局上，我有一个链接可以创建一个具有 :remote => true 的新帖子.当我单击该远程链接以更改 div 的内容以便创建新帖子时，我将如何做到这一点?

I have a scaffold called post which has a title and a description. On my layout I have a link to create a new post that has :remote => true. How would I make it when I click on that remote link to change the content of a div so that I can create a new post?

推荐答案

假设您将使用的操作名为 new.您应该在视图/帖子中创建一个名为 new.js.erb 的文件，该文件将在您远程发布表单时呈现.该文件必须包含将新帖子放入要填充的 div 的 javascript.例如，它可能包含

Let's suppose the action you will use is called new. You should create a file called new.js.erb into views/posts that will be rendered when you post remotely your form. That file must include the javascript that places the new post into the div you want to fill. As an example, it could contain

# new.js.erb
$('div#container').html("<p><%= escape_javascript(@post.title) %></p>").append("<p><%= escape_javascript(@post.content) %></p>"); 

ajax 帖子完成并创建新帖子后，javascript 将立即执行.请记住以下内容:- 你必须包括 jQuery- 您必须在 posts_controller 中指定呈现 .js 格式的能力，例如

The javascript will be executed immediately after the ajax post is finished and the new post is created. Remember the following: - You have to include jQuery - You have to specify in posts_controller the ability to render .js format, something like

# posts_controller.erb
def create
    @post = Post.new(params[:post])

    respond_to do |format|
      if @post.save
        format.html { redirect_to(@post, :notice => 'Post created via non AJAX.') }
        format.js # the actual ajax call
      else
        format.html { render :action => "new" }
      end
    end
end

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