c# - ASP.NET MVC 向扩展的 IdentityRole 添加必需的注释

Question

我刚刚像这样扩展了我的 AspNetRoles 表:

public class AspApplicationRoles : IdentityRole
{
    public AspApplicationRoles() : base() { }
    public AspApplicationRoles(String Name) : base(Name) { }
    [Required]
    public String ApplicationId { get; set; }
    public AspNetApplications Application { get; set; }
}

如何使 Name 属性成为必填项？是否可以？到目前为止，我只能将它添加到我的 ApplicationId。另外，如何添加新角色？到目前为止，如果我使用 RoleManager 添加它，它只会询问名称。

Answer 1

作为一个选项，您可以为角色创建创建一个新的 View 模型。这类似于启用个人用户身份验证时在默认 MVC 项目模板中为用户所做的事情。如果您查看 AccountViewModels.cs，您会看到几个 View 模型。

例如，您可以创建以下类:

public class ApplicationRoleCreateModel
{
    [Required]
    public string Name { get; set; }
    [Required]
    [Display(Name = "Application Id")]
    public string ApplicationId { get; set; }
}

假设您创建了包含自定义属性的 ApplicationRole 类 described here ，然后可以创建如下角色 Controller 类:

[Authorize]
public class RoleController : Controller
{
    private ApplicationRoleManager _roleManager;

    public RoleController() { }

    public RoleController(ApplicationRoleManager roleManager)
    {
        RoleManager = roleManager;
    }

    public ApplicationRoleManager RoleManager
    {
        get
        {
            return _roleManager ?? 
                HttpContext.GetOwinContext().Get<ApplicationRoleManager>();
        }
        private set { _roleManager = value; }
    }

    public ActionResult Index()
    {
        var model = RoleManager.Roles.ToList();
        return View(model);
    }

    public ActionResult Create()
    {
        return View();
    }

    [HttpPost]
    public async Task<ActionResult> Create(ApplicationRoleCreateModel model)
    {
        if (ModelState.IsValid)
        {
            var result = await RoleManager.CreateAsync(new ApplicationRole()
            {
                Name = model.Name,
                ApplicationId = model.ApplicationId
            });
            if (result.Succeeded)
                return RedirectToAction("Index");
            else
                foreach (var error in result.Errors)
                    ModelState.AddModelError("", error);
        }
        return View();
    }
}