从视图将字符串传递给控制器​​/动作

Question

I am trying to lower the role of a user by clicking a link in my view.

When I click the link, it doesn't go to the action, but it just gives 404 error and links the resource that is not found with the string I am trying to pass to the action( referred to as "stringparameter")

In this case, the link is /Admin/Disable/stringparameter

I think I am not using the correct overload, so could someone help me out? Thanks

This is the action in the AdminController

 [HttpPost]
    public ActionResult Disable(string id)
    {
        Role rol = new UserRepository().GetRole("Disabled");             
        new UserRepository().UpdateUser(id,rol.RoleId);
        return RedirectToAction("Users");
    }

this is the viewmodel

public class UserSuperUserPM
{
    public UserClass User { get; set; }
    public List<UserClass> Users { get; set; }

    public UserClass SuperUser { get; set; }
    public List<UserClass> SuperUsers { get; set; }

    public UserClass Disabled { get; set; }
    public List<UserClass> Disableds { get; set; }

    public UserClass Inactive { get; set; }
    public List<UserClass> Inactives { get; set; }
}

this is the userclass

public class UserClass
{
    public string UserId { get; set; }
    public string Username { get; set; }
    public string Role { get; set; }
}

and this is the view(1 of the 4 similar tables in the view)

@foreach (var item in Model.Users)
{
    <tr>
        <td class="col-md-4">
            @Html.DisplayFor(modelItem => item.Username, Model.Users)
        </td>
        <td class="col-md-4">
            @Html.DisplayFor(modelItem => item.Role, Model.Users)
        </td>
        <td calss="col-md-4">
--------Commented attempted links(none of them work correct)
            @*@Html.ActionLink("Disable", "Disable", new { Controller = "Admin", action = "Disable", id = item.UserId })*@
            @*<a href="~/Controllers/AdminController/Disable?id=@item.UserId">Disable</a>*@
            @*@Html.ActionLink("Disable","Admin", new { id = item.UserId },null)*@
            @*@Html.ActionLink("Disable", "Disable","Admin", item.UserId)*@

-------original attempted link
            @Html.ActionLink("Disable", "Disable", new { id = item.UserId})




        </td>
    </tr>
}

Answer 1

It's because href attr in a a element just do GET dont POST , so to it works change the Action to :

[HttpGet]
public ActionResult Disable(string id)
{
    Role rol = new UserRepository().GetRole("Disabled");             
    new UserRepository().UpdateUser(id,rol.RoleId);
    return RedirectToAction("Users");
}

But I suggest to you do this with JS.

Answer 2

只需删除[HttpPost]，它说该控制器只能通过POST方法访问，而您正尝试通过GET访问，则应让它发布并使用AJAx进行调用