建立角色

AuthSample/Controllers/AdminController.cs

@@ -0,0 +1,55 @@
+using AuthSample.ViewModels.Admin;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using System.Threading.Tasks;
+
+namespace AuthSample.Controllers
+{
+    [Authorize]
+    public class AdminController : Controller
+    {
+        private readonly RoleManager<IdentityRole> _roleManager;
+
+        public AdminController(RoleManager<IdentityRole> roleManager)
+        {
+            _roleManager = roleManager;
+        }
+        public IActionResult Index()
+        {
+            return View();
+        }
+
+        [HttpGet]
+        public IActionResult CreateRole()
+        {
+            return View();
+        }
+
+        [HttpPost]
+        public async Task<IActionResult> CreateRoleAsync(CreateRoleViewModel model)
+        {
+            if (ModelState.IsValid)
+            {
+                //角色 Name 不能重覆
+                var identityRole = new IdentityRole
+                {
+                    Name = model.RoleName,   
+                };
+
+                IdentityResult result = await _roleManager.CreateAsync(identityRole);
+
+                if (result.Succeeded)
+                {
+                    return RedirectToAction("index", "home");
+                }
+
+                foreach(IdentityError error in result.Errors)
+                {
+                    ModelState.AddModelError("", error.Description);
+                }
+            }
+            return View(model);
+        }
+    }
+}

AuthSample/ViewModels/Admin/CreateRoleViewModel.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace AuthSample.ViewModels.Admin
+{
+    public class CreateRoleViewModel
+    {
+        [Required]
+        [Display(Name = "角色")]
+        public string RoleName { get; set; }
+    }
+}

AuthSample/Views/Admin/CreateRole.cshtml

@@ -0,0 +1,18 @@
+@using AuthSample.ViewModels.Admin
+@*
+    For more information on enabling MVC for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860
+*@
+@{
+    ViewBag.Title = "建立角色";
+}
+@model CreateRoleViewModel
+<form asp-action="CreateRole" method="post">
+ <div>
+     <label asp-for="RoleName"></label>
+     <input asp-for="RoleName" />
+     <span asp-validation-for="RoleName"></span>
+ </div>
+ <div>
+     <button>創建角色</button>
+ </div>
+</form>

AuthSample/Views/Home/Index.cshtml

@@ -28,4 +28,7 @@ else
         <a asp-controller="account" asp-action="login">登入</a>
     </div>
 }
+<div>
+    <a asp-controller="admin" asp-action="createrole">建立角色</a>
+</div>
     Index