Edit and create blog posts

Website/Controllers/BlogController.cs

@@ -3,13 +3,14 @@ using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Website.Data;
+using Website.Models;
 using Website.ViewModels;
 
 namespace Website.Controllers
 {
 	public class BlogController : Controller
 	{
-		const int MaxPostsPerPage = 10;
+		private const int MaxPostsPerPage = 10;
 		private readonly BlogRepository _repo;
 
 		public BlogController(BlogRepository repo)
@@ -36,5 +37,35 @@ namespace Website.Controllers
 				return NotFound();
 			}
 		}
+
+		public async Task<IActionResult> Edit(int? id) {
+			if (!id.HasValue)
+				return View();
+
+			try {
+				var post = await _repo.GetPostByIdAsync(id.Value);
+				var model = new BlogPostSubmission {
+					Id = post.Id,
+					Title = post.Title,
+					Content = post.Draft
+				};
+				return View(model);
+			}
+			catch (InvalidOperationException) {
+				return NotFound();
+			}
+		}
+
+		[HttpPost]
+		public async Task<IActionResult> Save(BlogPostSubmission submission) {
+			var post = submission.Id.HasValue ? await _repo.GetPostByIdAsync(submission.Id.Value) : new BlogPost();
+
+			post.UpdateTitle(submission.Title);
+			post.UpdateDraft(submission.Content);
+
+			var savedPost = await _repo.SavePost(post);
+
+			return RedirectToAction(nameof(Edit), new{savedPost.Id});
+		}
 	}
 }