Rails JavaScript数据库查询 [英] Rails javascript database queries

问题描述

如何通过javascript进行PUT，POST或DELETE调用?

How do I do a PUT, POST or DELETE call from javascript?

我已经使用jquery拖放收集了一些数据.然后如何将其发送到数据库?我想我也许可以使用jQuery.ajax，但无法确定其精确程度.

I've collected some data using jquery drag and drop. How do I then send this to the database? I think I might be able to use jQuery.ajax but can't work out how exactly.

任何指针都表示赞赏.

解决方案:

这是有效的javascript

This is the javascript that works

$(document).ready(function() {
  $.ajax({
        type: "PUT",
        url:    "/articles/8", // should be mapped in routes.rb
        data: {articles:{name:"New Name"}}
      });
});

但是它不会将第8条的名称更改为新名称". Firebug没有显示任何错误，但是我仍然无法将数据传递给编辑.

But it doesn't change the name of article 8 to New Name. Firebug shows no errors, but I still can't pass data to the edit.

该网址是使用put网址的标准更新，它存在于路由中.

The url is the standard update using put url, it exists in the routes.

推荐答案

您可以为此使用jQuery ajax:这是一种使用服务器端代码动态处理浏览器请求的好方法.

You can use jQuery ajax for this: It is a very good way to handle browser requests dynamically with server side code.

jQuery('#element_id').on('click change',function(){ // use event as per your need
       $.ajax({
              type: "GET",
              url:    "/edit_comment", // should be mapped in routes.rb
              data: {comment:"new comment"},
              datatype:"html", // check more option
              success: function(data) {
                       // handle response data
                       },
              async:   true
            });    

});

有关更多详细信息，请检查以下链接:

For more details check these links:

http://api.jquery.com/jQuery.ajax/

http://api.jquery.com/category/ajax/

RAILs代码:

def edit_comment
@comment = params[:comment]
// store to database
  response_to do |format|
  render :html 'comment.html'
  end
end

routes.rb

map.edit_comment "edit_comment", :controller => 'comment', :action => 'edit_comment'

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