Application/CommentLink/CommentLinkCommand.cs

@@ -11,5 +11,16 @@ namespace HN.Application
 
     [Required]
     public string Content { get; set; }
+
+    // Constructeur vide nécessaire pour le model binding
+    public CommentLinkCommand()
+    {
+
+    }
+
+    public CommentLinkCommand(Guid linkId)
+    {
+      LinkId = linkId;
+    }
   }
 }

Apps/Website/Controllers/CommentsController.cs

@@ -0,0 +1,34 @@
+using HN.Application;
+using Website.Models;
+using Microsoft.AspNetCore.Mvc;
+using MediatR;
+using System.Threading.Tasks;
+
+namespace Website.Controllers
+{
+  public sealed class CommentsController : BaseController
+  {
+    private readonly IMediator _bus;
+
+    public CommentsController(IMediator bus)
+    {
+      _bus = bus;
+    }
+
+    [ValidateAntiForgeryToken]
+    [HttpPost]
+    public async Task<IActionResult> Create(CommentLinkCommand command)
+    {
+      if (!ModelState.IsValid)
+      {
+        return View("../Links/Show", new ShowLinkViewModel(await _bus.Send(new GetLinkQuery(command.LinkId)), command));
+      }
+
+      await _bus.Send(command);
+
+      SetFlash("Comment added!");
+
+      return RedirectToAction(nameof(LinksController.Show), "Links", new { id = command.LinkId });
+    }
+  }
+}

Apps/Website/Controllers/LinksController.cs

@@ -4,6 +4,7 @@ using MediatR;
 using System.Threading.Tasks;
 using System;
 using HN.Domain;
+using Website.Models;
 
 namespace Website.Controllers
 {
@@ -25,7 +26,7 @@ namespace Website.Controllers
     [HttpGet("{controller}/{id:guid}")]
     public async Task<IActionResult> Show(Guid id)
     {
-      return View(await _bus.Send(new GetLinkQuery(id)));
+      return View(new ShowLinkViewModel(await _bus.Send(new GetLinkQuery(id)), new CommentLinkCommand(id)));
     }
 
     public IActionResult Create()
@@ -35,12 +36,12 @@ namespace Website.Controllers
 
     [HttpPost("{controller}/{id:guid}/vote")]
     [ValidateAntiForgeryToken]
-    public async Task<IActionResult> Vote(Guid id, string url, VoteType type)
+    public async Task<IActionResult> Vote(Guid id, string url, VoteType type, string redirectTo)
     {
       await _bus.Send(new VoteForLinkCommand(id, type));
 
       SetFlash($"Successfuly {type} for {url}!");
-      return RedirectToAction(nameof(Index));
+      return Redirect(redirectTo);
     }
 
     [HttpPost]

Apps/Website/Models/ShowLinkViewModel.cs

@@ -0,0 +1,18 @@
+using HN.Application;
+
+namespace Website.Models
+{
+  public class ShowLinkViewModel
+  {
+    public LinkDto Link { get; set; }
+
+    public CommentLinkCommand CommentForm { get; set; }
+
+    public ShowLinkViewModel(LinkDto link, CommentLinkCommand commentForm)
+    {
+      Link = link;
+      CommentForm = commentForm;
+    }
+  }
+
+}

Apps/Website/Views/Links/Create.cshtml

@@ -5,9 +5,13 @@
 
 <form method="post">
   <div>
-    @Html.LabelFor(m => m.Url)
+    @* @Html.LabelFor(m => m.Url)
     @Html.EditorFor(m => m.Url)
-    @Html.ValidationMessageFor(m => m.Url)
+    @Html.ValidationMessageFor(m => m.Url) *@
+
+    <label asp-for="@Model.Url"></label>
+    <input asp-for="@Model.Url" />
+    <span asp-validation-for="@Model.Url"></span>
   </div>
   <button type="submit">Post!</button>
 </form>

Apps/Website/Views/Links/Show.cshtml

@@ -1,3 +1,4 @@
-@model HN.Application.LinkDto
+@model ShowLinkViewModel
 
-<partial name="_LinkItem" model="@Model" />
+<partial name="_LinkItem" model="@Model.Link" />
+<partial name="_CommentForm" model="@Model.CommentForm" />

Apps/Website/Views/Shared/_CommentForm.cshtml

@@ -0,0 +1,12 @@
+@model HN.Application.CommentLinkCommand
+
+<div>
+  <h2>Add a comment</h2>
+  <form asp-action="Create" asp-controller="Comments" method="post">
+    <input type="hidden" asp-for="@Model.LinkId" />
+    <textarea asp-for="@Model.Content"></textarea>
+    <span asp-validation-for="@Model.Content"></span>
+    
+    <button type="submit">Post a comment</button>
+  </form>
+</div>

Apps/Website/Views/Shared/_LinkItem.cshtml

@@ -3,6 +3,7 @@
 <a asp-action="Show" asp-controller="Links" asp-route-id="@Model.Id">@Model.Url - created at @Model.CreatedAt.ToLocalTime() (👍: @Model.UpVotes / 👎: @Model.DownVotes)</a>
 
 <form asp-controller="Links" asp-action="Vote" asp-route-id="@Model.Id" asp-route-url="@Model.Url" method="post">
+  <input type="hidden" name="redirectTo" value="@Context.Request.Path" />
   <input type="submit" name="type" value="up">👍</button>
   <input type="submit" name="type" value="down">👎</button>
 </form>

Domain/Link.cs

@@ -9,7 +9,7 @@ namespace HN.Domain
     public string Url { get; }
     public DateTime CreatedAt { get; }
     private List<Vote> _votes;
-    public IReadOnlyList<Vote> Votes { get { return _votes; } }
+    public IReadOnlyList<Vote> Votes => _votes;
 
     private Link(string url)
     {