abzarasadi/Pages/Admin/Blog/Edit.cshtml.cs

using AsadiTools.Data;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace AsadiTools.Pages.Admin.Blog;

[Authorize(AuthenticationSchemes = "AdminCookie")]
public class AdminBlogEditModel(AppDbContext db) : PageModel
{
    [BindProperty] public BlogPostInput Input { get; set; } = new();
    public int PostId { get; private set; }

    public async Task<IActionResult> OnGetAsync(int id)
    {
        var post = await db.BlogPosts.FindAsync(id);
        if (post is null) return NotFound();
        PostId = id;
        Input = new BlogPostInput
        {
            Title           = post.Title,
            Slug            = post.Slug,
            Content         = post.Content,
            Excerpt         = post.Excerpt,
            MetaDescription = post.MetaDescription,
            FeaturedImage   = post.FeaturedImage,
            Tags            = post.Tags,
            IsPublished     = post.IsPublished,
        };
        ViewData["Title"] = "ویرایش: " + post.Title;
        return Page();
    }

    public async Task<IActionResult> OnPostAsync(int id)
    {
        if (!ModelState.IsValid) { PostId = id; return Page(); }

        var post = await db.BlogPosts.FindAsync(id);
        if (post is null) return NotFound();

        var wasUnpublished = !post.IsPublished;
        post.Title           = Input.Title;
        post.Slug            = string.IsNullOrWhiteSpace(Input.Slug) ? post.Slug : Input.Slug.Trim();
        post.Content         = Input.Content;
        post.Excerpt         = Input.Excerpt;
        post.MetaDescription = Input.MetaDescription;
        post.FeaturedImage   = string.IsNullOrWhiteSpace(Input.FeaturedImage) ? null : Input.FeaturedImage;
        post.Tags            = Input.Tags;
        post.IsPublished     = Input.IsPublished;
        post.UpdatedAt       = DateTime.Now;
        if (Input.IsPublished && wasUnpublished)
            post.PublishedAt = DateTime.Now;

        await db.SaveChangesAsync();
        return RedirectToPage("/Admin/Blog/Index");
    }
}