无法发送表格数据&文件通过AJAX上传到控制器

时间:2015-05-12 15:46:17

标签: javascript jquery asp.net-mvc ajaxform form-data

我正在尝试从我的视图中发送一堆表单数据并将其映射到我的控制器中的ViewModel参数。另外,我正在尝试发送一个带有此请求的文件,该文件将映射到一个单独的参数。

formData被发送到控制器时,它会正确地将文件上载映射到file参数,但是,model参数属性都是null / defaults。

总之,我的问题是:如何在发送文件时将我的表单元素值映射到控制器中的MyViewModel参数?

型号:

public class MyViewModel
{
    public int AsssumptionSetId { get; set; }
    public int BuildingBlockId { get; set; }
    public string ReplacementCode { get; set; }
    public decimal Rounding { get; set; }
    public string DataSource { get; set; }
    public bool AER { get; set; }
    public int Term { get; set; }
}

查看:

此视图强烈输入MyViewModel:

<form id="buildingBlockForm">

    @Html.HiddenFor(model => model.AsssumptionSetId)
    @Html.HiddenFor(model => model.BuildingBlockId)

    @Html.TextBoxFor(m => m.ReplacementCode)

    @Html.TextBoxFor(m => m.Rounding)

    @Html.DropDownListFor(m => m.DataSource, (SelectList)ViewBag.DataSources)

    @Html.DropDownListFor(m => m.Term, (SelectList)ViewBag.Terms)

    @Html.CheckBoxFor(m => m.AER)

    <input type="file" id="file" name="file" />

    <input class="button green-button" type="submit" value="Create" />

</form>

控制器:

  public ActionResult CreateBuildingBlock(MyViewModel model, HttpPostedFileBase file)
        {
            // all of the 'model' properties = null instead of the form values
            // file = the file I chose to upload and works as expected
        }

JS:

var formData = new FormData($('#buildingBlockForm'));

// Get file and append to form data (Should only be 1)
$.each(Files["csv"], function (key, value) {
    formData .append("file", value);
});

// Send file
$.ajax({
    url: '/Assumptions/CreateBuildingBlock',
    type: 'POST',
    data: formData,
    cache: false,
    dataType: "json",
    contentType: false,
    processData: false,

    success: function (response) {
        // Handle success
    },
    error: function (xhr, status, errorThrown) {
        // Handle errors
    }
});

2 个答案:

答案 0 :(得分:1)

当抓取需要序列化的表单时,我错过了一个索引。

#ifdef DEBUG

这解决了我的问题。

答案 1 :(得分:0)

由于您的表单包含文件输入类型,因此您需要使用表单来处理此提交(enctype)。

<form id="buildingBlockForm" enctype="multipart/form-data"> 

另外,如果你想坚持使用MVC的表单助手,它可以缓解你在基于脚本的ajax帖子中可能遇到的问题。

@using (Ajax.BeginForm("CreateBuildingBlock", "Assumptions", null, new AjaxOptions { HttpMethod = "POST", OnSuccess = "postSuccess", OnFailure = "postFailed" }, new { enctype = "multipart/form-data" }))
{
  // your form fields here
}

<script>
  function postSuccess() {
    // handle success here
  }

  function postfailed() {
    // handle failed post here
  }
</script>