Add external logins to register page

HaoK · HaoK · commit fe3068bc2097 · 2019-01-25T14:38:38.000-08:00
diff --git a/src/Identity/UI/src/Areas/Identity/Pages/V3/Account/Register.cshtml b/src/Identity/UI/src/Areas/Identity/Pages/V3/Account/Register.cshtml
@@ -30,6 +30,36 @@
             <button type="submit" class="btn btn-default">Register</button>
         </form>
     </div>
+    <div class="col-md-6 col-md-offset-2">
+        <section>
+            <h4>Use another service to register.</h4>
+            <hr />
+            @{
+                if ((Model.ExternalLogins?.Count ?? 0) == 0)
+                {
+                    <div>
+                        <p>
+                            There are no external authentication services configured. See <a href="https://go.microsoft.com/fwlink/?LinkID=532715">this article</a>
+                            for details on setting up this ASP.NET application to support logging in via external services.
+                        </p>
+                    </div>
+                }
+                else
+                {
+                    <form id="external-account" asp-page="./ExternalLogin" asp-route-returnUrl="@Model.ReturnUrl" method="post" class="form-horizontal">
+                        <div>
+                            <p>
+                                @foreach (var provider in Model.ExternalLogins)
+                                {
+                                    <button type="submit" class="btn btn-default" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">@provider.DisplayName</button>
+                                }
+                            </p>
+                        </div>
+                    </form>
+                }
+            }
+        </section>
+    </div>
 </div>
 
 @section Scripts {
diff --git a/src/Identity/UI/src/Areas/Identity/Pages/V3/Account/Register.cshtml.cs b/src/Identity/UI/src/Areas/Identity/Pages/V3/Account/Register.cshtml.cs
@@ -2,10 +2,13 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
 using System.Text.Encodings.Web;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Identity.UI.Services;
 using Microsoft.AspNetCore.Mvc;
@@ -36,6 +39,12 @@ public abstract class RegisterModel : PageModel
         /// </summary>
         public string ReturnUrl { get; set; }
 
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public IList<AuthenticationScheme> ExternalLogins { get; set; }
+
         /// <summary>
         ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
         ///     directly from your code. This API may change or be removed in future releases.
@@ -75,7 +84,7 @@ public class InputModel
         ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
         ///     directly from your code. This API may change or be removed in future releases.
         /// </summary>
-        public virtual void OnGet(string returnUrl = null) => throw new NotImplementedException();
+        public virtual Task OnGetAsync(string returnUrl = null) => throw new NotImplementedException();
 
         /// <summary>
         ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
@@ -108,14 +117,16 @@ public RegisterModel(
             _emailSender = emailSender;
         }
 
-        public override void OnGet(string returnUrl = null)
+        public override async Task OnGetAsync(string returnUrl = null)
         {
             ReturnUrl = returnUrl;
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
         }
 
         public override async Task<IActionResult> OnPostAsync(string returnUrl = null)
         {
             returnUrl = returnUrl ?? Url.Content("~/");
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
             if (ModelState.IsValid)
             {
                 var user = CreateUser();
diff --git a/src/Identity/UI/src/Areas/Identity/Pages/V4/Account/Register.cshtml b/src/Identity/UI/src/Areas/Identity/Pages/V4/Account/Register.cshtml
@@ -30,6 +30,36 @@
             <button type="submit" class="btn btn-primary">Register</button>
         </form>
     </div>
+    <div class="col-md-6 col-md-offset-2">
+        <section>
+            <h4>Use another service to register.</h4>
+            <hr />
+            @{
+                if ((Model.ExternalLogins?.Count ?? 0) == 0)
+                {
+                    <div>
+                        <p>
+                            There are no external authentication services configured. See <a href="https://go.microsoft.com/fwlink/?LinkID=532715">this article</a>
+                            for details on setting up this ASP.NET application to support logging in via external services.
+                        </p>
+                    </div>
+                }
+                else
+                {
+                    <form id="external-account" asp-page="./ExternalLogin" asp-route-returnUrl="@Model.ReturnUrl" method="post" class="form-horizontal">
+                        <div>
+                            <p>
+                                @foreach (var provider in Model.ExternalLogins)
+                                {
+                                    <button type="submit" class="btn btn-primary" name="provider" value="@provider.Name" title="Log in using your @provider.DisplayName account">@provider.DisplayName</button>
+                                }
+                            </p>
+                        </div>
+                    </form>
+                }
+            }
+        </section>
+    </div>
 </div>
 
 @section Scripts {
diff --git a/src/Identity/UI/src/Areas/Identity/Pages/V4/Account/Register.cshtml.cs b/src/Identity/UI/src/Areas/Identity/Pages/V4/Account/Register.cshtml.cs
@@ -2,10 +2,13 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
 using System.Text.Encodings.Web;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Identity.UI.Services;
 using Microsoft.AspNetCore.Mvc;
@@ -35,6 +38,12 @@ public abstract class RegisterModel : PageModel
         /// </summary>
         public string ReturnUrl { get; set; }
 
+        /// <summary>
+        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public IList<AuthenticationScheme> ExternalLogins { get; set; }
+
         /// <summary>
         ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
         ///     directly from your code. This API may change or be removed in future releases.
@@ -74,7 +83,7 @@ public class InputModel
         ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
         ///     directly from your code. This API may change or be removed in future releases.
         /// </summary>
-        public virtual void OnGet(string returnUrl = null) => throw new NotImplementedException();
+        public virtual Task OnGetAsync(string returnUrl = null) => throw new NotImplementedException();
 
         /// <summary>
         ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
@@ -107,14 +116,16 @@ public RegisterModel(
             _emailSender = emailSender;
         }
 
-        public override void OnGet(string returnUrl = null)
+        public override async Task OnGetAsync(string returnUrl = null)
         {
             ReturnUrl = returnUrl;
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
         }
 
         public override async Task<IActionResult> OnPostAsync(string returnUrl = null)
         {
             returnUrl = returnUrl ?? Url.Content("~/");
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
             if (ModelState.IsValid)
             {
                 var user = CreateUser();
diff --git a/src/Identity/samples/IdentitySample.DefaultUI/Areas/Identity/Pages/Account/Register.cshtml.cs b/src/Identity/samples/IdentitySample.DefaultUI/Areas/Identity/Pages/Account/Register.cshtml.cs
@@ -2,10 +2,13 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
 using System.Text.Encodings.Web;
 using System.Threading.Tasks;
 using IdentitySample.DefaultUI.Data;
+using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Identity.UI.Services;
 using Microsoft.AspNetCore.Mvc;
@@ -38,6 +41,8 @@ public RegisterModel(
 
         public string ReturnUrl { get; set; }
 
+        public IList<AuthenticationScheme> ExternalLogins { get; set; }
+
         public class InputModel
         {
             [Required]
@@ -67,14 +72,16 @@ public class InputModel
             public int Age { get; set; }
         }
 
-        public void OnGet(string returnUrl = null)
+        public async Task OnGetAsync(string returnUrl = null)
         {
             ReturnUrl = returnUrl;
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
         }
 
         public async Task<IActionResult> OnPostAsync(string returnUrl = null)
         {
             returnUrl = returnUrl ?? Url.Content("~/");
+            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
             if (ModelState.IsValid)
             {
                 var user = new ApplicationUser {

Original file line number	Diff line number	Diff line change
`@@ -2,10 +2,13 @@`
`2`	`2`	`// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.`
`3`	`3`
`4`	`4`	`using System;`
	`5`	`+using System.Collections.Generic;`
`5`	`6`	`using System.ComponentModel.DataAnnotations;`
	`7`	`+using System.Linq;`
`6`	`8`	`using System.Text.Encodings.Web;`
`7`	`9`	`using System.Threading.Tasks;`
`8`	`10`	`using IdentitySample.DefaultUI.Data;`
	`11`	`+using Microsoft.AspNetCore.Authentication;`
`9`	`12`	`using Microsoft.AspNetCore.Identity;`
`10`	`13`	`using Microsoft.AspNetCore.Identity.UI.Services;`
`11`	`14`	`using Microsoft.AspNetCore.Mvc;`
`@@ -38,6 +41,8 @@ public RegisterModel(`
`38`	`41`
`39`	`42`	`public string ReturnUrl { get; set; }`
`40`	`43`
	`44`	`+ public IList<AuthenticationScheme> ExternalLogins { get; set; }`
	`45`	`+`
`41`	`46`	`public class InputModel`
`42`	`47`	`{`
`43`	`48`	`[Required]`
`@@ -67,14 +72,16 @@ public class InputModel`
`67`	`72`	`public int Age { get; set; }`
`68`	`73`	`}`
`69`	`74`
`70`		`- public void OnGet(string returnUrl = null)`
	`75`	`+ public async Task OnGetAsync(string returnUrl = null)`
`71`	`76`	`{`
`72`	`77`	`ReturnUrl = returnUrl;`
	`78`	`+ ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();`
`73`	`79`	`}`
`74`	`80`
`75`	`81`	`public async Task<IActionResult> OnPostAsync(string returnUrl = null)`
`76`	`82`	`{`
`77`	`83`	`returnUrl = returnUrl ?? Url.Content("~/");`
	`84`	`+ ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();`
`78`	`85`	`if (ModelState.IsValid)`
`79`	`86`	`{`
`80`	`87`	`var user = new ApplicationUser {`