intro-to-dotnet-web-dev/3-razor-pages/1-complete/RazorPagesPizza/RazorPagesPizza/Pages/Delete.cshtml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.EntityFrameworkCore;
using RazorPagesPizza.Data;
using RazorPagesPizza.Models;

namespace RazorPagesPizza.Pages
{
    public class DeleteModel : PageModel
    {
        private readonly RazorPagesPizza.Data.RazorPagesPizzaContext _context;

        public DeleteModel(RazorPagesPizza.Data.RazorPagesPizzaContext context)
        {
            _context = context;
        }

        [BindProperty]
        public Pizza Pizza { get; set; } = default!;

        public async Task<IActionResult> OnGetAsync(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var pizza = await _context.Pizza.FirstOrDefaultAsync(m => m.Id == id);

            if (pizza is not null)
            {
                Pizza = pizza;

                return Page();
            }

            return NotFound();
        }

        public async Task<IActionResult> OnPostAsync(int? id)
        {
            if (id == null)
            {
                return NotFound();
            }

            var pizza = await _context.Pizza.FindAsync(id);
            if (pizza != null)
            {
                Pizza = pizza;
                _context.Pizza.Remove(Pizza);
                await _context.SaveChangesAsync();
            }

            return RedirectToPage("./Index");
        }
    }
}