MVC模型属性发布表单上无效 [英] MVC model property null on posting form
问题描述
我正在开发一个MVC 4应用程序,我在submiting使用强大的视图模型形式问题。
我打电话的地方在GET的ActionResult我宣布一个模型实例,并把它传递给局部视图和存储在隐藏字段的字段的局部视图。
调试时我看到所有的领域越来越价值观和正常工作。
在用户提交表单后,我用用户填写这个模特属性加的属性。
问题是,调用POST操作的结果时,要列出越来越空。
该控制器:
[HTTPGET]
公众的ActionResult MessageDetails(字符串ID)
{
MessageModel米;
字符串userfullname =的String.Empty; ServiceReference2.WebService1Soap WS =新ServiceReference2.WebService1SoapClient();
数据表DT = ws.GetMessageDetails(bcce7f7ad7596f963f4adb23d713e0d4,329392de8a55edf86c0881a57381cbe6,编号User.Identity.Name).Tables [0]; 如果(会话[用户]!= NULL)
userfullname = ((HaifanetMobile.Models.LoginModel)Session[\"user\"]).LoginDS.Tables[0].Rows[0][((HaifanetMobile.Models.LoginModel)Session[\"user\"]).LoginDS.Tables[0].Columns[\"fullname\"].Ordinal].ToString(); M =新MessageModel(DT,User.Identity.Name,userfullname); 返回PartialView(MessageDetails,米);
}
[HttpPost]
公众的ActionResult ReplyMessage(MessageModel模型)
{ //这里的地方列出越来越空
变种误差= ModelState.Values.SelectMany(V => v.Errors);
如果(ModelState.IsValid)
{ model.Send();
返回的内容(成功);
}
返回PartialView(MessageDetails模型);
}
视图:
@model HaifanetMobile.Models.MessageModel<脚本类型=文/ JavaScript的>
功能showMessagesPanel1(){ $('#messagedetails_panel')切换()。
$(#messages_panel)显示()。
}
$(函数(){
$('形式')。提交(函数(){ $ .validator.unobtrusive.parse($('形式')); //添加 如果($(本).valid()){
$阿贾克斯({
网址:this.action,
类型:this.method,
数据:$(本).serialize()
成功:函数(结果){
警报(信息已发出); },
错误:函数(){
警报(错误);
}
});
}
返回false;
});
});
< / SCRIPT>
<表ID =messages_panel_mbar的cellpadding =0CELLSPACING =0> &所述; TR>
< TD类=left_mbar> < / TD>
< TD类=main_mbar>
< / TD>
< TD ID =back_msg_details级=right_mbar>< / TD>
< / TR>
< /表>
< DIV的风格=高度:10%;宽度:100%;字体:黑体;字体大小:20像素;文本对齐:权利;> @ Html.Raw(Model.Subject)LT; / DIV>
< DIV ID =msg_chat的风格=文本对齐:权利;宽度:100%;高度:汽车;最大高度:80%;溢出-Y:滚动;>
@ Html.Raw(Model.MsgHistory)
< / DIV>
< DIV ID =reply_msg的风格=高度:5%>答复和LT; / DIV> < DIV ID =reply_msg_block级=看得见的风格=宽度:100%;高:45%;> @using(Ajax.BeginForm(ReplyMessage,SettingsMenu,空,新AjaxOptions {},{新@class =center_form}))
{
@ Html.ValidationSummary(真的,);
<字段集的风格=高度:75%> @ Html.Hidden(主题,Model.Subject)
@ Html.Hidden(的ParentId,Model.ParentId)
@ Html.Hidden(发件人,Model.From)
@ Html.Hidden(fullnamesender,Model.fullnamesender)
@ Html.Hidden(收件人,Model.To)
< DIV ID =textarea_msg_reply>
@ Html.TextAreaFor(M = GT; m.Content,新{@class =})
@ Html.ValidationMessageFor(M = GT; m.Content)
< / DIV> < /字段集> <输入类型=提交值=发送/>
} < / DIV>
模型:
公共类MessageModel
{
公共字符串从{搞定;组; } [必需(的ErrorMessage =输入到)]
公开名单<联系与GT;要得到;组; } [必需(的ErrorMessage =输入主题)]
[StringLength(100的ErrorMessage =最大1000字符)]
公共字符串主题{搞定;组;} [StringLength(1000,的ErrorMessage =最大1000字符)]
公共字符串内容{搞定;组; } 公共字符串MsgHistory {搞定;组; } 公共字符串fullnamesender {搞定;组; } 公共字符串的ParentId {搞定;组; } 公众的DateTime LastMsgDate {搞定;组; } 公共BOOL readed = FALSE;
} //我省略了构造....
看看这个问题,答案。
<一个href=\"http://stackoverflow.com/questions/10400551/using-asp-net-and-mvc-3-how-can-i-create-hidden-fields-so-that-a-list-with-an-a\">Using ASP.NET MVC和3,我怎样才能创建隐藏字段,以便使用数组作为列表中的每个项目的值列表正确结合?
HiddenFor通常更易于使用,但它不会自己解决问题。您应该将隐藏你想回发后使用每个列表项的每个属性。
然而,我不建议这种方法。您应该只把一个隐藏字段的原始邮件的标识,并回传后,查看收件人列表。
I'm developing a MVC 4 application and I'm having problem submiting a form using strong view model.
I'm calling a partial view where in the GET actionResult I declare a model instance and passing it to the partial view and store the fields in hidden fields. When debugging I see that all field are getting values and it works fine.
After the user submits the form, I use this model properties plus the properties filled by the user.
The problem is that the To list is getting null when calling the post action result.
The controllers:
[HttpGet]
public ActionResult MessageDetails(string id)
{
MessageModel m;
string userfullname = String.Empty;
ServiceReference2.WebService1Soap ws = new ServiceReference2.WebService1SoapClient();
DataTable dt = ws.GetMessageDetails("bcce7f7ad7596f963f4adb23d713e0d4", "329392de8a55edf86c0881a57381cbe6",id,User.Identity.Name).Tables[0];
if (Session["user"] != null)
userfullname = ((HaifanetMobile.Models.LoginModel)Session["user"]).LoginDS.Tables[0].Rows[0][((HaifanetMobile.Models.LoginModel)Session["user"]).LoginDS.Tables[0].Columns["fullname"].Ordinal].ToString();
m = new MessageModel(dt, User.Identity.Name, userfullname);
return PartialView("MessageDetails",m);
}
[HttpPost]
public ActionResult ReplyMessage(MessageModel model)
{
// here's where the To list is getting empty
var errors = ModelState.Values.SelectMany(v => v.Errors);
if (ModelState.IsValid)
{
model.Send();
return Content("Success");
}
return PartialView("MessageDetails",model);
}
The view:
@model HaifanetMobile.Models.MessageModel
<script type="text/javascript">
function showMessagesPanel1() {
$('#messagedetails_panel').toggle();
$("#messages_panel").show();
}
$(function () {
$('form').submit(function () {
$.validator.unobtrusive.parse($('form')); //added
if ($(this).valid()) {
$.ajax({
url: this.action,
type: this.method,
data: $(this).serialize(),
success: function (result) {
alert("Message Sent");
},
error: function () {
alert("Error");
}
});
}
return false;
});
});
</script>
<table id="messages_panel_mbar" cellpadding="0" cellspacing="0">
<tr>
<td class="left_mbar">
</td>
<td class="main_mbar">
</td>
<td id="back_msg_details" class="right_mbar"></td>
</tr>
</table>
<div style="height:10%; width:100%; font: bold; font-size: 20px; text-align:right;"> @Html.Raw(Model.Subject)</div>
<div id="msg_chat" style="text-align:right; width:100%; height:auto; max-height:80%; overflow-y:scroll;">
@Html.Raw(Model.MsgHistory)
</div>
<div id="reply_msg" style="height: 5%">reply</div>
<div id="reply_msg_block" class="visible" style="width:100%; height:45%;">
@using (Ajax.BeginForm("ReplyMessage", "SettingsMenu", null, new AjaxOptions { }, new { @class = "center_form" }))
{
@Html.ValidationSummary(true, "");
<fieldset style="height:75%">
@Html.Hidden("Subject", Model.Subject)
@Html.Hidden("ParentId", Model.ParentId)
@Html.Hidden("From", Model.From)
@Html.Hidden("fullnamesender", Model.fullnamesender)
@Html.Hidden("To", Model.To)
<div id="textarea_msg_reply">
@Html.TextAreaFor(m => m.Content, new { @class = "" })
@Html.ValidationMessageFor(m => m.Content)
</div>
</fieldset>
<input type="submit" value="send" />
}
</div>
The model:
public class MessageModel
{
public string From { get; set; }
[Required(ErrorMessage = "Enter To")]
public List<Contact> To { get; set; }
[Required(ErrorMessage = "Enter Subject")]
[StringLength(100, ErrorMessage = "Max 1000 chars")]
public string Subject {get; set;}
[StringLength(1000, ErrorMessage = "Max 1000 chars")]
public string Content { get; set; }
public string MsgHistory { get; set; }
public string fullnamesender { get; set; }
public string ParentId { get; set; }
public DateTime LastMsgDate { get; set; }
public bool readed = false;
} // I omitted the constructors....
Take a look at this question and the answer.
HiddenFor is generally easier to use, but it won't solve your problem by itself. You should place a hidden for every property of every list item you want to use after postback.
However, I would not recommend this approach. You should only place a hidden field for the identifier of the original message, and look up the recipient list after postback.
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