使用 jquery 将数据发送到 MVC 控制器

Question

我有一个 ASP.NET MVC3 应用程序，当用户单击我的锚标记时，我想向一个操作发送 3 条数据：

 <a onclick='editDescription(<#= DocID,FileName,Description #>)'></a>

这是调用我的操作的 javascript：

   function editDescription(docId,fileName,description) {
     var url = "@Url.Content("~/OrderDetail/_EditDescription/")" + docId+'/'+
     fileName + '/' + description;
    //do the rest}

我的行动：

  public ActionResult _EditDescription(string id,string filename, string descritpion)

我关心的部分是文件名和描述，因为它们可能很长，我不希望 url 看起来像这样：

 http://localhost/OrderDetail/_EditDescription/123/some long filename.pdf/this is a    long description for the name

如何将我的数据发送到我的操作，而不必像查询字符串一样发送它？谢谢

Answer 1

您可以使用 jQuery $.ajax 方法：

<div id="what-I-want-updated">

  <input id="whatever-the-id-is" type="text" value="@Model.ID" />
  <br /> 
  <input id="whatever-the-filename" type="text" value="@Model.Filename" />
  <br />
  <input id="whatever-the-description" type="text" value="@Model.Description" />
  <br />
  <button id="whatIsClicked">Update!</button>

</div> <!-- /#what-I-want-updated -->

<script>

    // You're probably clicking something to initiate update 
    var $whatIsClicked = $('#whatIsClicked');

    // .live persists on the page even after other ajax calls
    // So when the thing is clicked
    $whatIsClicked.live('click', function() {

       // Grab the information needed to update
       var theId = $('#whatever-the-id-is').val(); //Or it could be .text()
       var theFilename = $('#whatever-the-filename').val();
       var theDescript = $('#whatever-the-description').val();

       // Let's edit the description!
       $.ajax({
         type: "POST",
         url: "OrderDetail/_EditDescription", // the method we are calling
         contentType: "application/json; charset=utf-8",
         data: {id: theId, filename: theFilename, description: theDescript},
         dataType: "json",
         success: function (result) {
             alert('Yay! It worked!');
             // Or if you are returning something
             alert('I returned... ' + result.WhateverIsReturning);                    
         },
         error: function (result) {
             alert('Oh no :(');
         }
     });
    });
</script>

即使它仍然可以工作，请确保将控制器方法更改为：

[HttpPost]
public ActionResult _EditDescription(string id, string filename, string descritpion)

Answer 2

将您的操作声明为 POST

[HttpPost]
public ActionResult _EditDescription(string docId, string filename, string description)

创建一个不可见的 HTML 表单：

<form action="@Url.Content("~/OrderDetail/_EditDescription/")" method="post" name="editDescriptionForm">
   <input type="hidden" name="docId" />
   <input type="hidden" name="fileName" />
   <input type="hidden" name="description" />
</form>

填写表格并用JS提交：

function editDescription(docId, fileName, description) {
    document.editDescriptionForm.docId = docId;
    ...

    document.editDescriptionForm.submit();
}

Answer 3

如果您愿意，可以通过 ajax $.post 或通过 [HttpPost] 属性执行操作来完成表单的完整发布。