Add author name in blog post (#428)

* Add author name in blog post entity

* Add IsMultiModeEnabled config

* Add author name in the claim at the time of login, if multi mode is enabled

* Save author name in the db at the time of blog post create and update

* Show author name in the top menu if multi mode is enabled

* Update tests

* Rename config (address review comments)

* Remove if else from tests (address review comments)

* Add if in the razor view (address review comments)

* Add ef migration for author name (address review comments)

* Use bootstrap 5x (address review comments)

* add test for RavenDb (i forgot this before)

* Address review comments

* Address review comments

* Update config doc

* Show author name in blog preview

* Show author name in read blog post page

* Show author name in top menu

* Add icon

Author: Arnab-Developer

docs/Migrations/Readme.md

@@ -6,4 +6,8 @@ This is contrasted by Minor changes. These are things where the user does not ne
 
 Breaking changes are recorded in the [MIGRATION.md](../../MIGRATION.md). Since version 9 of the blog, “Entity Framework Migrations” has been introduced for all SQL providers. You can read more in the [documentation](../Storage/Readme.md). In a nutshell, this means that database migration can be carried out easily via the “ef migration” CLI tool. More on this in the documentation linked above.
 
-Changes for the appsettings.json must currently still be made manually. The exact changes that need to be made here can be found in MIGRATION.md.
+Changes for the appsettings.json must currently still be made manually. The exact changes that need to be made here can be found in MIGRATION.md.
+
+## UNRELEASED
+
+A new config has been added `UseMultiAuthorMode` in `appsettings.json`. The default value of this config is `false`. If set to `true` then author name will be associated with blog posts at the time of creation.

docs/Setup/Configuration.md

@@ -65,7 +65,8 @@ The appsettings.json file has a lot of options to customize the content of the b
 		"ServiceUrl": "",
 		"ContainerName": "",
 		"CdnEndpoint": ""
-	}
+	},
+	"UseMultiAuthorMode": false
 }
 ```
 
@@ -109,3 +110,4 @@ The appsettings.json file has a lot of options to customize the content of the b
 | ServiceUrl                                    | string         | The host url of the Azure blob storage. Only used if `AuthenticationMode` is set to `Default`                                                                                    |
 | ContainerName                                 | string         | The container name for the image storage provider                                                                                                                                |
 | CdnEndpoint                                   | string         | Optional CDN endpoint to use for uploaded images. If set, the blog will return this URL instead of the storage account URL for uploaded assets.                                  |
+| UseMultiAuthorMode                            | boolean        | The default value is `false`. If set to `true` then author name will be associated with blog posts at the time of creation. This author name will be fetched from the identity provider's `name` or `nickname` or `preferred_username` claim property. |

src/LinkDotNet.Blog.Domain/BlogPost.cs

@@ -38,6 +38,8 @@ public sealed partial class BlogPost : Entity
 
     public string Slug => GenerateSlug();
 
+    public string? AuthorName { get; private set; }
+
     private string GenerateSlug()
     {
         if (string.IsNullOrWhiteSpace(Title))
@@ -92,7 +94,8 @@ public static BlogPost Create(
         DateTime? updatedDate = null,
         DateTime? scheduledPublishDate = null,
         IEnumerable<string>? tags = null,
-        string? previewImageUrlFallback = null)
+        string? previewImageUrlFallback = null,
+        string? authorName = null)
     {
         if (scheduledPublishDate is not null && isPublished)
         {
@@ -113,6 +116,7 @@ public static BlogPost Create(
             IsPublished = isPublished,
             Tags = tags?.Select(t => t.Trim()).ToImmutableArray() ?? [],
             ReadingTimeInMinutes = ReadingTimeCalculator.CalculateReadingTime(content),
+            AuthorName = authorName
         };
 
         return blogPost;
@@ -143,5 +147,6 @@ public void Update(BlogPost from)
         IsPublished = from.IsPublished;
         Tags = from.Tags;
         ReadingTimeInMinutes = from.ReadingTimeInMinutes;
+        AuthorName = from.AuthorName;
     }
 }

src/LinkDotNet.Blog.Infrastructure/Migrations/20250830110439_AddAuthorNameInBlogPost.Designer.cs

@@ -0,0 +1,33 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace LinkDotNet.Blog.Web.Migrations;
+
+/// <inheritdoc />
+public partial class AddAuthorNameInBlogPost : Migration
+{
+    /// <inheritdoc />
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        ArgumentNullException.ThrowIfNull(migrationBuilder);
+
+        migrationBuilder.AddColumn<string>(
+            name: "AuthorName",
+            table: "BlogPosts",
+            type: "nvarchar(256)",
+            maxLength: 256,
+            nullable: true);
+    }
+
+    /// <inheritdoc />
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        ArgumentNullException.ThrowIfNull(migrationBuilder);
+
+        migrationBuilder.DropColumn(
+            name: "AuthorName",
+            table: "BlogPosts");
+    }
+}

src/LinkDotNet.Blog.Infrastructure/Migrations/20250830110439_AddAuthorNameInBlogPost.cs

@@ -1,4 +1,4 @@
-// <auto-generated />
+// <auto-generated />
 using System;
 using LinkDotNet.Blog.Infrastructure.Persistence.Sql;
 using Microsoft.EntityFrameworkCore;
@@ -24,6 +24,10 @@ protected override void BuildModel(ModelBuilder modelBuilder)
                         .IsUnicode(false)
                         .HasColumnType("TEXT");
 
+                    b.Property<string>("AuthorName")
+                        .HasMaxLength(256)
+                        .HasColumnType("nvarchar(256)");
+
                     b.Property<string>("Content")
                         .IsRequired()
                         .HasColumnType("TEXT");

src/LinkDotNet.Blog.Infrastructure/Migrations/BlogDbContextModelSnapshot.cs

@@ -21,6 +21,7 @@ public void Configure(EntityTypeBuilder<BlogPost> builder)
         builder.Property(x => x.IsPublished).IsRequired();
 
         builder.Property(x => x.Tags).HasMaxLength(2048);
+        builder.Property(x => x.AuthorName).HasMaxLength(256).IsRequired(false);
 
         builder.HasIndex(x => new { x.IsPublished, x.UpdatedDate })
             .HasDatabaseName("IX_BlogPosts_IsPublished_UpdatedDate")

src/LinkDotNet.Blog.Infrastructure/Persistence/Sql/Mapping/BlogPostConfiguration.cs

@@ -23,4 +23,6 @@ public sealed record ApplicationConfiguration
     public bool ShowReadingIndicator { get; init; }
 
     public bool ShowSimilarPosts { get; init; }
+
+    public bool UseMultiAuthorMode { get; init; }
 }

src/LinkDotNet.Blog.Web/ApplicationConfiguration.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Security.Claims;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Authentication;
@@ -27,6 +27,7 @@ public async Task SignInAsync(string redirectUri)
         var claims = new[]
         {
             new Claim(ClaimTypes.Name, "Dummy user"),
+            new Claim("name", "Dummy user"),
             new Claim(ClaimTypes.NameIdentifier, Guid.NewGuid().ToString()),
         };
         var identity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);