2018教程之mvc+ef之五：Identity角色管理之新建角色

用户管理基本功能完毕，现在我们来看看如何建立角色。

当我们使用ASP.NET 4.5创建模板项目时，会发现模板只提供了ApplicationUserManager用于用户的登录注册、修改、设置等,而没有提供与用户角色相关的代码，对此就需要我们自己手动的添加

一、在IdentityConfig.cs文件里面添加一个与ApplicationUserManager类似的类：

//定义角色管理器
    public class ApplicationRoleManager : RoleManager<IdentityRole>
    {
        public ApplicationRoleManager(IRoleStore<IdentityRole, string> roleStore) : base(roleStore)
        {
            
        }

        public static ApplicationRoleManager Create(IdentityFactoryOptions<ApplicationRoleManager> options,
            IOwinContext context)
        {
            return new ApplicationRoleManager(new RoleStore<IdentityRole>(context.Get<ApplicationDbContext>()));
        }
    }

　　

二、在Startup.Auth.cs文件里面创建与ApplicationRoleManager相对应的上下文

 public partial class Startup
    {

        //...

        // 有关配置身份验证的详细信息，请访问 http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // 将数据库上下文和用户管理器配置为对每个请求使用单个实例
            app.CreatePerOwinContext(ApplicationDbContext.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationRoleManager>(ApplicationRoleManager.Create);//添加角色管理器

            //...
            
        }
    }

　三、第三步:可以在AccountController类里面封装成属性来使用：

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

　　四、开始我们的新建角色

1.新建个AddRoleViewModel的模型

　

using System.ComponentModel.DataAnnotations;

namespace MYtest2018.ViewModels
{
	public class AddRoleViewModel
	{
		[Required]
		[StringLength(20)]
		[Display(Name = "角色名称")]
		public string Name { get; set; }


	}
}

　五、后台

　

/// <summary>
		/// 添加角色
		/// </summary>
		/// <returns></returns>
		[HttpGet]
		//[Authorize(Roles = "Super")]
		public ActionResult AddRoles()
		{
			return View();
		}

		/// <summary>
		/// 添加角色
		/// </summary>
		/// <param name="model"></param>
		/// <returns></returns>
		[HttpPost]
		//[Authorize(Roles = "Super")]
		[ValidateAntiForgeryToken]
		public async Task<ActionResult> AddRoles(AddRoleViewModel model)
		{
			if (ModelState.IsValid)
			{
				var oneRole = await RoleManager.FindByNameAsync(model.Name);
				if (oneRole == null)
				{
					var result1 = await RoleManager.CreateAsync(new IdentityRole(model.Name));

					if (result1.Succeeded)
					{
						return RedirectToAction("ListUsers");
					}
					AddErrors(result1);
				}

				return View("角色已存在！！！！！");
			}
			return View();
		}

 

六、前台

@model MYtest2018.ViewModels.AddRoleViewModel
@{
    ViewBag.Title = "AddRoles";
    Layout = "~/Views/Shared/_Layoutadmin.cshtml";
}


<div class="wrapper wrapper-content">
	<div class="ibox float-e-margins">
		<div class="ibox-title">
			<h2>创建新用户</h2>
			<div class="ibox-tools">
				<a class="collapse-link">
					<i class="fa fa-chevron-up"></i>
				</a>
			</div>
		</div>

		<div class="ibox-content">
			@using (Html.BeginForm("AddRoles", "Account", FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
			{
				@Html.AntiForgeryToken()

				@Html.ValidationSummary("", new { @class = "text-danger" })



				<div class="form-group">
					@Html.LabelFor(m => m.Name, new { @class = "col-md-2 control-label" })
					<div class="col-md-10">
						@Html.TextBoxFor(m => m.Name, new { @class = "form-control" })
					</div>
				</div>
				<div class="form-group">
					<div class="col-md-offset-2 col-md-10">
						<input type="submit" class="btn btn-default" value="保存" />
					</div>
				</div>

			}


			</div>
		</div>
	</div>

 

@section Scripts {
	@Scripts.Render("~/bundles/jqueryval")
}

　　

七，效果