我的模特:
public class ViewRequestModel
{
[Required(ErrorMessage = "some")]
[Display(Name = "some")]
public int RequestType { get; set; }
}
我的控制员:
[HttpPost]
[Authorize(Roles = "P")]
public PartialViewResult ViewRequests(ViewRequestModel model)
{
string vn = "";
switch (model.RequestType)
{
...
}
return PartialView(vn);
}
我的观点:
@{
var reqTypes = new List<ListItem> { new ListItem { Text = "t1", Value = "1" },
new ListItem { Text = "t2", Value = "2" },
new ListItem { Text = "t3", Value = "3" } };
}
@Html.DropDownListFor(model => model.RequestType, new SelectList(reqTypes), new { id = "ddlType" })
@Html.ValidationMessageFor(model => model.RequestType)
当我尝试发布表单时,jquery验证会阻止它并显示错误The field RequestType must be a number
哪里是我的错?
答案 0 :(得分:4)
我的错误在哪里?
您正在将一些经典WebForms类(ListItem
)与ASP.NET MVC混合使用。这样做的结果是下拉列表中的<option>
元素没有值属性。因此,没有任何内容提交到表单,验证显然会失败。
以下是填充下拉列表的正确方法:
var reqTypes = new[]
{
new SelectListItem { Text = "t1", Value = "1" },
new SelectListItem { Text = "t2", Value = "2" },
new SelectListItem { Text = "t3", Value = "3" }
};
@Html.DropDownListFor(
model => model.RequestType,
reqTypes,
new { id = "ddlType" }
)
从这个例子中可以看出,我使用的是专门用于ASP.NET MVC的SelectListItem
类。这会产生:
<select data-val="true" data-val-number="The field some must be a number." data-val-required="some" id="ddlType" name="RequestType">
<option selected="selected" value="1">t1</option>
<option value="2">t2</option>
<option value="3">t3</option>
</select>
你的代码生成:
<select data-val="true" data-val-number="The field some must be a number." data-val-required="some" id="ddlType" name="RequestType">
<option>t1</option>
<option>t2</option>
<option>t3</option>
</select>
差异很明显。