Question

我必须在我的控制器中使用它来列出所有用户：

public IActionResult ListUsers(){

    var users = _application.Users.ToList();

    return View(users);
}

但我似乎无法从aspnetroles表中添加ROLE字段..它应该是一个简单的连接，但我尝试过的每次尝试都失败了，就像这样：

public async Task<IActionResult> Edit(string id)
    {

        var applicationUser = await _context.ApplicationUser.SingleOrDefaultAsync(m => m.Id == id);
        var model = new UsuariosViewModel
        {
            CC = applicationUser.CC,
            Apellido = applicationUser.Apellido,
            Nombre = applicationUser.Nombre,
            Rol = await _userManager.GetRolesAsync(applicationUser)
        };

        return View(model);
    }

该方法应该如何？

此外，加入后视图应该如何？

Answer 1

用户可能有多个角色

这是行动：

public async Task<IActionResult> UsersRolesList()
    {

        var AllUsers = _application.Users.ToList();

        UsersAndRolesViewModel UserAndRoleViewModel = new UsersAndRolesViewModel();

        List<UserAndRoleViewModel> AllUsersAndRoles = new List<UserAndRoleViewModel>();

        foreach (var usr in AllUsers)
        {
            var model = new UserAndRoleViewModel
            {
                UserName = usr.UserName,

                Roles = await userManager.GetRolesAsync(usr)
            };

            AllUsersAndRoles.Add(model);
        }

        UserAndRoleViewModel.UserAndRole = AllUsersAndRoles;

        return View(UserAndRoleViewModel);
    }

和这个观点：

@model UsersAndRolesViewModel

<table style="width:100%">
    @foreach (var usr in Model.UserAndRole)
    {
       <tr>
            <td>
                UserName:
                @usr.UserName
            </td>
            <td>
                Roles:
                <table>
                    <tr>
                        @foreach (var role in usr.Roles)
                        {
                            <td>
                                 Role Name: @role
                            </td>
                        }
                    </tr>
               </table>
            </td>
       </tr>
   }
</table>

这是ViewModel

public class UserAndRoleViewModel
{
    public string UserName { get; set; }

    public IList<string> Roles { get; set; }

}

public class UsersAndRolesViewModel
{
    public List<UserAndRoleViewModel> UserAndRole { get; set; }
}

如何在asp.net core 2.0中列出用户及其角色？

1 个答案: