Ruby w/Sinatra:我可以举一个 jQuery AJAX 请求的例子吗?

问题描述：

%a{:href => "/new_game?human_is_first=true", :remote => "true"}
            %span Yes

以上是我的链接.只是想知道如何处理这个.我需要能够执行一些 javascript.下面是我使用 Rails 时后面的 .js.erb 文件.

Above is my link. Just wondering how to handle this. I need to be able to execute some javascript. Below is a .js.erb file from back when I using rails.

$('.welcome_container').fadeOut(500, function(){
  $( '.shell' ).html( "<%= escape_javascript( render( :partial => "board/board" ) ) %>" );
  $('.board_container').fadeIn(500);
});

所以，我的问题是，一旦/new_game 在 app.rb 中被调用，我希望能够将一些 javascript 发送到当前页面(无需离开页面，并呈现部分)

So, my question is, Once /new_game is called in app.rb, I want to be able to send some javascript to the current page (without leaving the page, and have the partial rendered)

答

参见我对您最近的另一个问题的回答用于在生产 Sinatra 应用中发送和接收 HTML 部分的全面设置.

See my answer to your other recent question for a comprehensive setup for sending and receiving HTML partials in a production Sinatra app.

由于 Sinatra 是一个不错的轻量级框架，您可以*地(*?)提出自己的工作流程和代码来实现部分和处理此类调用.您可以选择定义一个基于正则表达式的路由，而不是我的显式每部分路由，该路由根据传递的 URL 或参数查找正确的数据.

As Sinatra is a nice lightweight framework, you are free (forced?) to come up with your own workflow and code for implementing partials and handling such calls. Instead of my explicit route-per-partial, you might choose to define a single regex-based route that looks up the correct data based on the URL or param passed.

一般来说，如果你想让 Sinatra 响应一个路径，你需要添加一个路由.所以:

In general, if you want Sinatra to respond to a path, you need to add a route. So:

get "/new_game" do
  # This block should return a string, either directly,
  # by calling haml(:foo), erb(:foo), or such to render a template,
  # or perhaps by calling ...to_json on some object.
end

如果您想返回一个没有布局的部分并且您正在使用视图，请确保将 layout:false 作为选项传递给帮助程序.例如:

If you want to return a partial without a layout and you're using a view, be sure to pass layout:false as an option to the helper. For example:

get "/new_game" do
  # Will render views/new_game.erb to a string
  erb :new_game, :layout => false
end

如果你想返回一个 JSON 响应，你应该设置适当的头数据:

If you want to return a JSON response, you should set the appropriate header data:

get "/new_game" do
  content_type :json
  { :foo => "bar" }.to_json
end

如果您真的想从处理程序返回原始 JavaScript 代码，然后执行该代码...那么，返回 JS 的方法如下:

If you really want to return raw JavaScript code from your handler and then execute that...well, here's how you return the JS:

get "/new_game" do
  content_type 'text/javascript'
  # Turns views/new_game.erb into a string
  erb :new_game, :layout => false
end

由你来接收 JS 并*不寒而栗* eval() 它.

It's up to you to receive the JS and *shudder* eval() it.

Ruby w/Sinatra:我可以举一个 jQuery AJAX 请求的例子吗?

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