我有一个包含两个字段的简单表格 当我使用jQuery ajax函数提交表单时,服务器仅接收第一个字段数据,而不接收第二个字段数据?
第一个字段:下拉列表(选择单个值。)
第二个字段:下拉列表(选择多个值)
这是我的代码:
表格:
<form id="formId">
<div class="form-group">
<label>Customer</label>
@Html.DropDownListFor(m => m.Customers, new SelectList(Model.Customers, "id", "name"), "Select Customer", new { @class = "form-control", id = "customer_Id" })
</div>
<div class="form-group">
<label>Book</label>
@Html.DropDownListFor(m => m.Books, new MultiSelectList(Model.Books, "id", "name"), "Select Books", new { multiple = "true", @class = "form-control", id = "Book_Ids" })
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
jQuery代码:
@section scripts{
@Scripts.Render("~/bundles/jquery");
<script type="text/javascript">
jQuery(document).ready(function () {
var viewModel = {
Customers: "",
Books: []
};
// Loading data to viewModel.
$("#btn_Test").on("click", function () {
var selectedCustomerId = $("#customer_Id").val();
var selectedBooksIds = $("#Books_Ids").val();
viewModel.Customers = selectedCustomerId;
for (var i = 0; i < selectedBooksIds .length; i++) {
viewModel.Books.push(parseInt(selectedBooksIds[i]));//Added parseInt to parse value to int
}
});
// Submit Form.
$("#formId").submit(function (e) {
e.preventDefault();
jQuery.ajax({
url: "/RecordCustomerAndBooksIds/Create",
method: "post",
data: viewModel,
success: function () { alert("Done."); },
fail: function () { alert("Failed."); }
});
})
});
</script>
}
ViewModel:(当用户单击提交表单时,目标viewModel将接收适当的ID。)
public class CustomerIdAndBooksIdsViewModel
{
public int Customers { get; set; }
public List<int> Books { get; set; }
}
操作方法:
提交表单时:仅接收客户(客户ID)和书籍(书ID)的CustomerIdAndBooksIdsViewModel对象为null吗?
public ActionResult Create(CustomerIdAndBooksIdsViewModel ids) //
{
//...
}
如何解决?我将非常感谢。
答案 0 :(得分:1)
这里发生的事情是在viewModel.Books
中,您将其作为字符串推送,但是在控制器的Action上它期望一个int列表。
在发布值之前尝试将值解析为INT,例如:
for (var i = 0; i < selectedBooksIds.length; i++)
{
//Added parseInt to parse value to int
viewModel.Books.push(parseInt(selectedBooksIds[i]));
}
答案 1 :(得分:0)
尝试使用select2
<script>
$(document).ready(function () {
//The url we will send our get request to
var booksUrl = '@Url.Action("GetBooks", "Home")';
$('#books').select2(
{
placeholder: 'Select Books',
multiple: true,
ajax: {
//The url of the json service
url: booksUrl,
dataType: 'jsonp'
}
}
});
</script>
<form id="formId">
<div class="form-group">
<label>Customer</label>
@Html.DropDownListFor(m => m.Customers, new SelectList(Model.Customers, "id", "name"), "Select Customer", new { @class = "form-control", id = "customer_Id" })
</div>
<div class="form-group">
<label>Book</label>
@Html.TextBoxFor(m => m.Books, new { id = "Book_Ids" })
</div>
<button type="submit" class="btn btn-primary">Submit</button>