我遇到了以下问题。我正在为网站开发一个表单,这个表单应该有验证。我想使用本机ASP.NET MVC 2验证功能,但对它很顽固。我有一个通过$ .get加载的表单,并使用jQuery UI模式对话框显示。我找到的所有示例都解释了如何使用简单形式使用MVC验证并避免使用Ajax表单。
我可以为此表单启用客户端验证,但我需要正确处理服务器端验证。如何处理ajax表单的服务器端验证模型错误?
答案 0 :(得分:1)
将对象传递回控制器时,必须将代码包装在If ModelState.IsValid
以下是我编辑用户的简化版本。第一个“EDIT”将User对象发送给View。第二个“编辑”处理视图中的帖子。
Function Edit() As ActionResult
''# do stuff to populate your User
Return View(User)
End Function
<AcceptVerbs(HttpVerbs.Post)> _
Function Edit(ByVal user as User)
If ModelState.IsValid Then
''# do your valid stuff
Else
''# The posted form was not valid, send the user back
Return View(user)
End If
End Function
C#
中的情况与此相同public ActionResult Edit()
{
// do stuff to populate your User
return View(User);
}
[AcceptVerbs(HttpVerbs.Post)]
public object Edit(User user)
{
if (ModelState.IsValid) {
// do your valid stuff
} else {
//'# The posted form was not valid, send the user back
return View(user);
}
}
在您的视图中,如果您想添加AJAX验证,只需添加以下内容。
<%
Html.EnableClientValidation() ''# This is where all the magic happens. It will build your clientside validation for you out of your MetaData.
Using Html.BeginForm("Edit", "Users")
%>
<!-- all your markup crap -->
<tr>
<td>
<%: Html.LabelFor(Function(model) model.UserName)%></td>
<td>
<%: Html.TextBoxFor(Function(model) model.UserName) %>
<%: Html.ValidationMessage("UserName", "*")%><br />
</td>
</tr>
<!-- somewhere you'll want to add a Validation Summary of all your errors -->
<%= Html.ValidationSummary("Oops!, please correct the errors...") %>
<% End Using%>
<!-- bottom of the page -->
<script src="../../Assets/Scripts/MicrosoftAjax.js" type="text/javascript"></script>
<script src="../../Assets/Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script>
<script src="../../Assets/Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script>
以下是使用Ajax.BeginForm
进行渲染的一些信息
http://singulartechnologies.com/asp-net-mvc-ajax-beginform-sample-code
http://msdn.microsoft.com/en-us/library/dd381533.aspx
http://weblogs.asp.net/mikebosch/archive/2008/02/15/asp-net-mvc-submitting-ajax-form-with-jquery.aspx