Blogging module null check

modules/blogging/src/Volo.Blogging.Application/Volo/Blogging/Posts/PostAppService.cs

@@ -5,7 +5,9 @@ using Volo.Abp.Application.Dtos;
 using Volo.Abp.Application.Services;
 using System.Collections.Generic;
 using Microsoft.AspNetCore.Authorization;
+using Volo.Abp.Domain.Entities;
 using Volo.Abp.Users;
+using Volo.Blogging.Blogs;
 
 namespace Volo.Blogging.Posts
 {

modules/blogging/src/Volo.Blogging.EntityFrameworkCore/Volo/Blogging/Posts/EfCorePostRepository.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
+using Volo.Abp.Domain.Entities;
 using Volo.Abp.Domain.Repositories.EntityFrameworkCore;
 using Volo.Abp.EntityFrameworkCore;
 using Volo.Blogging.Blogs;
@@ -26,7 +27,14 @@ namespace Volo.Blogging.Posts
 
         public async Task<Post> GetPostByUrl(Guid blogId, string url)
         {
-            return await DbSet.FirstOrDefaultAsync(p => p.BlogId == blogId && p.Url == url);
+            var post = await DbSet.FirstOrDefaultAsync(p => p.BlogId == blogId && p.Url == url);
+
+            if (post == null)
+            {
+                throw new EntityNotFoundException(typeof(Post), nameof(post));
+            }
+
+            return post;
         }
     }
 }

modules/blogging/src/Volo.Blogging.Web/Pages/Blog/Posts/Detail.cshtml.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using Volo.Abp.Domain.Entities;
 using Volo.Blogging.Blogs;
 using Volo.Blogging.Posts;
 
@@ -32,10 +33,8 @@ namespace Volo.Blogging.Pages.Blog.Posts
 
         public async void OnGet()
         {
-            var blog = await _blogAppService.GetByShortNameAsync(BlogShortName);
-
-            Post = await _postAppService.GetByUrlAsync(new GetPostInput {BlogId = blog.Id , Url = PostUrl});
-            Blog = blog;
+            Blog = await _blogAppService.GetByShortNameAsync(BlogShortName);
+            Post = await _postAppService.GetByUrlAsync(new GetPostInput {BlogId = Blog.Id , Url = PostUrl});
         }
     }
 }