Add post, fix delete forum, fix null pointer exceptions, min max limist

on database strings

DAL/Domain/Foorum.cs

@@ -8,10 +8,23 @@ namespace DAL.Domain
     {
         [Key]
         public int FoorumId { get; set; }
+
+        [MaxLength(length: 128)]
+        [MinLength(length: 1)]
         public string Title { get; set; }
+
+        [MaxLength(length: 256)]
+        [MinLength(length: 1)]
         public string Description { get; set; }
+
+
+        [MaxLength(length: 1024)]
+        [MinLength(length: 1)]
         public string Body { get; set; }
         public DateTime CreationTime { get; set; }
+
+        [MaxLength(length: 128)]
+        [MinLength(length: 1)]
         public string Author { get; set; }
 
         public bool Visible { get; set; } = true;

DAL/Domain/Post.cs

@@ -1,5 +1,6 @@
 using System;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace DAL.Domain
 {
@@ -7,13 +8,22 @@ namespace DAL.Domain
     {
         [Key]
         public int PostId { get; set; }
+
+        [MaxLength(length: 128)]
+        [MinLength(length: 1)]
         public string Title { get; set; }
+
+        [MaxLength(length: 1024)]
+        [MinLength(length: 1)]
         public string Body { get; set; }
         public DateTime CreationTime { get; set; }
+
+        [MaxLength(length: 128)]
+        [MinLength(length: 1)]
         public string Author { get; set; }
 
+
         public int ForumId { get; set; }
-        public Foorum Foorum { get; set; }
 
     }
 }

DAL/Helpers/DbInitializer.cs

@@ -21,6 +21,7 @@ namespace DAL.Helpers
 
             };
             ctx.Foorums.Add(foorum);
+            ctx.SaveChanges();
 
 
             for (int i = 0; i < 3; i++)
@@ -30,7 +31,8 @@ namespace DAL.Helpers
                     Title = $"Post {i}",
                     Author = "Karu",
                     Body =  $"Pikk sisu {i}",
-                    CreationTime = DateTime.Now
+                    CreationTime = DateTime.Now,
+                    ForumId = foorum.FoorumId
                 };
                 ctx.Posts.Add(post);
                 foorum.Posts.Add(post);