MVC 4 Javascript表单提交问题 [英] MVC 4 Javascript form Submit issue

问题描述

大家好



我有一个问题，我在完成javascript函数时提交表单。



提交有效，但它丢失了我模型中的值。

< script type =text / javascript> 
函数changeSubjectPhaseForStudent（subjectID，studentID）{
 var theForm = document.getElementById（frmStudent）; 
 
 theForm.submit（）; 
} 
< / script> 
 
 @model StudentController.StudentMetrics 
 
 @using（Html.BeginForm（Student，Student，Model，FormMethod.Get，new {id =frmStudent} ））
 {
 @ Html.DropDownListFor（x => x.PhaseID，（List< SelectListItem>）ViewBag.Phases，new {onchange = string.Format（changeSubjectPhaseForStudent（{0}，{ 1}），Model.SubjectID，Model.StudentID），id =cmbPhase}）
} 

Under正常情况下，模型在提交回控制器时会保留其值。只有当表单通过上面的jscript提交时，它才会返回几个值，而不是全部。



谁能看到我做错了什么？ ??



提前谢谢。

解决方案

在表单中，你应该添加模型值，就像这样：

 @ Html.HiddenFor（m => m.SubjectID）
 @ Html.HiddenFor（m => m.StudentID）

Hi guys

I have an issue where I submit my form on completion of a javascript function.

The submit works, but it loses the values in my model.

<script type="text/javascript">
    function changeSubjectPhaseForStudent(subjectID, studentID) {
        var theForm = document.getElementById("frmStudent");

        theForm.submit();
    }
</script>

@model StudentController.StudentMetrics 
    
@using (Html.BeginForm("Student", "Student", Model,FormMethod.Get, new { id = "frmStudent" }))
{
@Html.DropDownListFor(x => x.PhaseID, (List<SelectListItem>)ViewBag.Phases, new { onchange = string.Format("changeSubjectPhaseForStudent({0},{1})", Model.SubjectID, Model.StudentID), id = "cmbPhase" })
}

Under normal circumstances, the model retains its values when it submits back into the controller. It''s only when the form is submitted via the above jscript that it returns only a few values, not all.

Can anyone see what I am doing wrong???

Thanks in advance.

解决方案

Inside your form, you should add the model values, like this:

@Html.HiddenFor(m => m.SubjectID)
@Html.HiddenFor(m => m.StudentID)

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