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模型未传递给控制器(MVC核心)

asp.net-core-mvc asp.net-mvc

MC9000 · 技术社区 · 6 年前

我在视图中得到了一个表单,其中按钮返回到控制器。除了传递的模型是空的(它没有将模型传递给控制器)之外,其他一切都正常。我在这里查看了其他一些答案,我的代码应该可以工作,但它不能。我做错了什么?

查看代码段:

@model LogModel

@using (Html.BeginForm("IPblocking", "Log", FormMethod.Post, @Model))
    {
        <button type="submit" class="btn btn-primary" name="btnIPblocking" value="block">
            @T("Admin.Custom.IPblocking.BlacklistButton")
        </button>
        <button type="submit" class="btn btn-primary" name="btnIPblocking" value="unblock">
            @T("Admin.Custom.IPblocking.WhitelistButton")
        </button>
    }

控制器代码段:

    //IPblocking
    [HttpPost]
    public virtual IActionResult IPblocking(LogModel model,string btnIPblocking)
    {
        if (!_permissionService.Authorize(StandardPermissionProvider.ManageSystemLog))
            return AccessDeniedView();

        //TODO: code to call IP block or unblock routine depending on button value

        return RedirectToAction("List");
    }

问题是模型对象基本上是空的!将视图的模型恢复到控制器的技巧是什么?

0 回复 | 直到 6 年前

Brando Zhang 6 年前

根据您的代码,我发现您没有将模型属性作为表单数据发布到控制器操作:

如果您不想在客户端修改模型值,我建议您可以尝试将其添加为hiddenfield,然后将其发布到操作中。

像这样:

@Html.HiddenFor(x=>x.Id);

更多详细信息,请参考以下代码:

@model LogModel

@using (Html.BeginForm("IPblocking", "Log", FormMethod.Post))
    {
        @Html.HiddenFor(x=>x.Id);
        <button type="submit" class="btn btn-primary" name="btnIPblocking" value="block">
            @T("Admin.Custom.IPblocking.BlacklistButton")
        </button>
        <button type="submit" class="btn btn-primary" name="btnIPblocking" value="unblock">
            @T("Admin.Custom.IPblocking.WhitelistButton")
        </button>
    }

我的日志模型:

public class LogModel {
    public int Id { get; set; }
}

结果:

MC9000 6 年前

我最终使用的是: 查看:

@model LogModel
<form asp-controller="Log" asp-action="IPblocking" method="post">
    <input type="hidden" name="ipblocking_IpAddress" value="@Model.IpAddress" />
    <div class="content">
        <div class="form-group">
            <div class="col-md-12">
                <button type="submit" class="btn btn-primary" name="btnIPblocking" value="block">
                    @T("Admin.Custom.IPblocking.BlacklistButton")
                </button>
                <button type="submit" class="btn btn-primary" name="btnIPblocking" value="unblock">
                    @T("Admin.Custom.IPblocking.WhitelistButton")
                </button>
            </div>
        </div>
    </div>
</form>

控制器:

//IPblocking
[HttpPost]
public virtual IActionResult IPblocking(string ipblocking_IpAddress,string btnIPblocking)
{
    if (!_permissionService.Authorize(StandardPermissionProvider.ManageSystemLog))
        return AccessDeniedView();

    //TODO: code to call IP block or unblock routine depending on button value
    if (btnIPblocking != null && ipblocking_IpAddress != null)
    {
        try
        {
            //block or unblock ip address here
            bool result = false;
            if (btnIPblocking == "block")
            {
                result = Nop.Web.Custom.MyData.IPAddress_BlackList_Insert(ipblocking_IpAddress);
                if (result)
                {
                    _notificationService.SuccessNotification(_localizationService.GetResource("Admin.Custom.IPblocking.Success"));
                }
                else
                {
                    _notificationService.SuccessNotification(_localizationService.GetResource("Admin.Custom.IPblocking.Fail"));
                }
            }
            else
            {
                result = Nop.Web.Custom.MyData.IPAddress_BlackList_Delete(ipblocking_IpAddress);
                if (result)
                {
                    _notificationService.SuccessNotification(_localizationService.GetResource("Admin.Custom.IPblocking.Unblock.Success"));
                }
                else
                {
                    _notificationService.SuccessNotification(_localizationService.GetResource("Admin.Custom.IPblocking.Unblock.Fail"));
                }
            }
        }
        catch (Exception exc)
        {
            _notificationService.ErrorNotification(exc.Message);
        }
    }

    return RedirectToAction("List");
}

还有模型(我之前没有发布,但这里有):

using System;
using Nop.Web.Framework.Mvc.ModelBinding;
using Nop.Web.Framework.Models;

namespace Nop.Web.Areas.Admin.Models.Logging
{
    /// <summary>
    /// Represents a log model
    /// </summary>
    public partial class LogModel : BaseNopEntityModel
    {
        #region Properties

        [NopResourceDisplayName("Admin.System.Log.Fields.LogLevel")]
        public string LogLevel { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.ShortMessage")]
        public string ShortMessage { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.FullMessage")]
        public string FullMessage { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.IPAddress")]
        public string IpAddress { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.Customer")]
        public int? CustomerId { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.Customer")]
        public string CustomerEmail { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.PageURL")]
        public string PageUrl { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.ReferrerURL")]
        public string ReferrerUrl { get; set; }

        [NopResourceDisplayName("Admin.System.Log.Fields.CreatedOn")]
        public DateTime CreatedOn { get; set; }

        #endregion
    }
}

仍然不确定如何传递整个模型,但这只适用于模型中的一个值。(所以这并不是我最初问题的答案)。使用ASP。净核心2.2