Daniel J. Summers
7e5e693008
Building it in-place for now; will move it to its own assembly before going live
68 lines
2.9 KiB
C#
68 lines
2.9 KiB
C#
using Microsoft.EntityFrameworkCore;
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namespace MyWebLog.Data;
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public static class PageExtensions
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{
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/// <summary>
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/// Count the number of pages
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/// </summary>
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/// <returns>The number of pages</returns>
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public static async Task<int> CountAll(this DbSet<Page> db) =>
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await db.CountAsync().ConfigureAwait(false);
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/// <summary>
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/// Count the number of pages in the page list
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/// </summary>
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/// <returns>The number of pages in the page list</returns>
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public static async Task<int> CountListed(this DbSet<Page> db) =>
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await db.CountAsync(p => p.ShowInPageList).ConfigureAwait(false);
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/// <summary>
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/// Retrieve all pages (non-tracked)
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/// </summary>
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/// <returns>A list of all pages</returns>
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public static async Task<List<Page>> FindAll(this DbSet<Page> db) =>
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await db.OrderBy(p => p.Title).ToListAsync().ConfigureAwait(false);
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/// <summary>
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/// Retrieve a page by its ID (non-tracked)
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/// </summary>
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/// <param name="id">The ID of the page to retrieve</param>
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/// <returns>The requested page (or null if it is not found)</returns>
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public static async Task<Page?> FindById(this DbSet<Page> db, string id) =>
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await db.SingleOrDefaultAsync(p => p.Id == id).ConfigureAwait(false);
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/// <summary>
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/// Retrieve a page by its ID, including its revisions (non-tracked)
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/// </summary>
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/// <param name="id">The ID of the page to retrieve</param>
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/// <returns>The requested page (or null if it is not found)</returns>
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public static async Task<Page?> FindByIdWithRevisions(this DbSet<Page> db, string id) =>
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await db.Include(p => p.Revisions).SingleOrDefaultAsync(p => p.Id == id).ConfigureAwait(false);
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/// <summary>
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/// Retrieve a page by its permalink (non-tracked)
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/// </summary>
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/// <param name="permalink">The permalink</param>
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/// <returns>The requested page (or null if it is not found)</returns>
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public static async Task<Page?> FindByPermalink(this DbSet<Page> db, string permalink) =>
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await db.SingleOrDefaultAsync(p => p.Permalink == permalink).ConfigureAwait(false);
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/// <summary>
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/// Retrieve a page of pages (non-tracked)
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/// </summary>
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/// <param name="pageNbr">The page number to retrieve</param>
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/// <returns>The pages</returns>
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public static async Task<List<Page>> FindPageOfPages(this DbSet<Page> db, int pageNbr) =>
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await db.OrderBy(p => p.Title).Skip((pageNbr - 1) * 25).Take(25).ToListAsync().ConfigureAwait(false);
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/// <summary>
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/// Retrieve a page by its ID (tracked)
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/// </summary>
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/// <param name="id">The ID of the page to retrieve</param>
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/// <returns>The requested page (or null if it is not found)</returns>
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public static async Task<Page?> GetById(this DbSet<Page> db, string id) =>
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await db.AsTracking().Include(p => p.Revisions).SingleOrDefaultAsync(p => p.Id == id).ConfigureAwait(false);
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}
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