Add Post Creation Functionality with Validation and Database Persistence

.gitignore

@@ -5,3 +5,4 @@ riderModule.iml
 /_ReSharper.Caches/
 .fake
 .vscode
+.vs/

MyFirstBlog/Controllers/PostsController.cs

@@ -1,34 +1,66 @@
-namespace MyFirstBlog.Controllers;
-
 using Microsoft.AspNetCore.Mvc;
 using MyFirstBlog.Dtos;
 using MyFirstBlog.Services;
+using System.Collections.Generic;
 
-[ApiController]
-[Route("posts")]
+namespace MyFirstBlog.Controllers
+{
+    [ApiController]
+    [Route("posts")]
+    public class PostsController : ControllerBase
+    {
+        private readonly IPostService _postService;
 
-public class PostsController : ControllerBase {
-    private IPostService _postService;
+        public PostsController(IPostService postService)
+        {
+            _postService = postService;
+        }
 
-    public PostsController(IPostService postService) {
-        _postService = postService;
-    }
+        // GET /posts
+        [HttpGet]
+        public IEnumerable<PostDto> GetPosts()
+        {
+            return _postService.GetPosts();
+        }
 
-    // Get /posts
-    [HttpGet]
-    public IEnumerable<PostDto> GetPosts() {
-        return _postService.GetPosts();
-    }
+        // GET /posts/{slug}
+
+        [HttpGet("{slug}")]
+        public ActionResult<PostDto> GetPost(string slug)
+        {
+            var post = _postService.GetPost(slug);
+            if (post == null)
+            {
+                return NotFound();
+            }
+            return Ok(post);
+        }
+
+
+
+        [HttpPost]
+        public IActionResult CreatePost([FromBody] PostCreateRequest post)
+        {
+            var errors = new List<string>();
+
+            if (string.IsNullOrWhiteSpace(post.Title))
+                errors.Add("Title cannot be blank");
+
+            if (string.IsNullOrWhiteSpace(post.Description))
+                errors.Add("You cannot send a message with empty description");
+
+            if (errors.Any())
+                return BadRequest(new { errors });
 
-    // Get /posts/:slug
-    [HttpGet("{slug}")]
-    public ActionResult<PostDto> GetPost(string slug) {
-        var post = _postService.GetPost(slug);
+            var newPost = _postService.CreatePost(post);
 
-        if (post is null) {
-            return NotFound();
+            return CreatedAtAction(nameof(GetPost), new { slug = newPost.Slug }, new
+            {
+                title = newPost.Title,
+                description = newPost.Description
+            });
+            //return CreatedAtAction(nameof(GetPost), new { slug = newPost.Slug }, newPost);
         }
 
-        return post;
     }
 }

MyFirstBlog/Dtos/PostCreateRequest.cs

@@ -0,0 +1,8 @@
+namespace MyFirstBlog.Dtos
+{
+    public class PostCreateRequest
+    {
+        public string Title { get; set; }
+        public string Description { get; set; }
+    }
+}

MyFirstBlog/Dtos/PostDto.cs

@@ -5,5 +5,6 @@ public record PostDto {
     public string Title { get; init; } = default!;
     public string Slug { get; init; } = default!;
     public string Body { get; init; } = default!;
+    public string Description { get; set; } = default!;
     public DateTime CreatedDate { get; init; }
 }

MyFirstBlog/Entities/Post.cs

@@ -4,5 +4,6 @@ public record Post {
     public string Title { get; init; } = default!;
     public string Slug { get; init; } = default!;
     public string Body { get; init; } = default!;
+    public string Description { get; set; }
     public DateTime CreatedDate { get; init; }
 }

MyFirstBlog/Extensions.cs

@@ -10,6 +10,7 @@ public static PostDto AsDto(this Post post) {
                 Title = post.Title,
                 Slug = post.Slug,
                 Body = post.Body,
+                Description = post.Description,
                 CreatedDate = post.CreatedDate
             };
 

MyFirstBlog/Migrations/20250807001933_AddDescriptionToPost.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace MyFirstBlog.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddDescriptionToPost : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "Description",
+                table: "Posts",
+                type: "text",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "Description",
+                table: "Posts");
+        }
+    }
+}