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[英]How to pass a formData object and another object inside array with Axios JS
[英]Pass array object inside formdata
我有一个数组里面的数组每个 object 都有文件 object 例如 [ { file:fileObject, Description:string }, { file:fileObject, Description: string } ] 我如何在 formdata 和 Z594C103F2C6E04C4B66Z 中传递这个数组表单数据
如果您通过 ajax发布数据,您首先需要了解以下两件事:
1.对于复杂类型的每个属性,model 绑定在源中查找名称模式prefix.property_name
。 如果没有找到,它只查找不带prefix
的property_name
。对于model
您在后端收到的是一个列表,您需要给出如下名称: [index].FormFile
或model[index].FormFile
。
2.Your model has a IFormFile
and your action receives a list model,if you only pass the IFormFile you need remove FromForm
attribute and be sure do not have [ApiController]
is a known github issue and this has been moved to Next sprint planning
里程碑。
这是一个完整的工作演示:
Model:
public class FileModels
{
public string Description { get; set; }
public IFormFile FormFile { get; set; }
}
看法:
<input type="file" multiple onchange="saveDocuments(this.files)"/>
<div class="form-group">
<input type="button" value="Submit" id="submit" class="btn btn-primary" />
</div>
@section Scripts
{
<script>
function saveDocuments(documentList) {
if (documentList.length > 0) {
var form = new FormData();
for (var i = 0; i < documentList.length; i++) {
var file = documentList[i];
form.append('model['+i+'].FormFile', file);
}
savePhysicalFile(form);
}
}
function savePhysicalFile(formData) {
if (formData != null) {
$.ajax({
url: "/Home/Save",
type: 'POST',
dataType: "json",
contentType: "multipart/form-data",
data: formData,
processData: false,
contentType: false,
success: function (result) {
console.log("Success", result);
},
error: function (data) {
console.log(data);
}
});
}
}
</script>
}
Controller:
[HttpPost]
public void Save(List<FileModels> model)
{
//...
}
如果您通过表单提交发布数据,这是一个完整的工作演示:
@model FileModels
<form asp-action="Save" method="post" enctype="multipart/form-data">
@for (int i = 0; i < 3; i++)
{
<div>
<input type="text" asp-for="Description" name="[@i].Description" />
</div>
<div>
<input type="file" asp-for="FormFile" name="[@i].FormFile" />
</div>
}
<div class="form-group">
<input type="submit" value="Submit" id="submit" class="btn btn-primary" />
</div>
</form>
Controller:
[HttpPost]
public void Save(List<FileModels> model)
{
//...
}
结果2:
我在 formdata 键中有绑定索引 Like Formdata[0][file]= file object Formdata[0][description]= Description
但 controller 没有从 formdata 中获取价值
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