Init data, single home page, multi-tenant

src/MyWebLog.Data/Extensions/PageExtensions.cs

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+using Microsoft.EntityFrameworkCore;
+
+namespace MyWebLog.Data;
+
+public static class PageExtensions
+{
+    /// <summary>
+    /// Retrieve a page by its ID (non-tracked)
+    /// </summary>
+    /// <param name="id">The ID of the page to retrieve</param>
+    /// <returns>The requested page (or null if it is not found)</returns>
+    public static async Task<Page?> FindById(this DbSet<Page> db, string id) =>
+        await db.FirstOrDefaultAsync(p => p.Id == id).ConfigureAwait(false);
+}

src/MyWebLog.Data/Extensions/PostExtensions.cs

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+using Microsoft.EntityFrameworkCore;
+
+namespace MyWebLog.Data;
+
+public static class PostExtensions
+{
+    /// <summary>
+    /// Retrieve a page of published posts (non-tracked)
+    /// </summary>
+    /// <param name="pageNbr">The page number to retrieve</param>
+    /// <param name="postsPerPage">The number of posts per page</param>
+    /// <returns>A list of posts representing the posts for the given page</returns>
+    public static async Task<List<Post>> FindPageOfPublishedPosts(this DbSet<Post> db, int pageNbr, int postsPerPage) =>
+        await db.Where(p => p.Status == PostStatus.Published)
+            .Skip((pageNbr - 1) * postsPerPage).Take(postsPerPage)
+            .ToListAsync();
+}

src/MyWebLog.Data/Extensions/WebLogDetailsExtensions.cs

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+using Microsoft.EntityFrameworkCore;
+
+namespace MyWebLog.Data;
+
+public static class WebLogDetailsExtensions
+{
+    /// <summary>
+    /// Find the details of a web log by its host
+    /// </summary>
+    /// <param name="host">The host</param>
+    /// <returns>The web log (or null if not found)</returns>
+    public static async Task<WebLogDetails?> FindByHost(this DbSet<WebLogDetails> db, string host) =>
+        await db.FirstOrDefaultAsync(wld => wld.UrlBase == host).ConfigureAwait(false);
+}