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February 11, 2024 13:40
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using System.Diagnostics; | |
using Microsoft.AspNetCore.Mvc; | |
using Microsoft.EntityFrameworkCore; | |
using WebApplication1.Models; | |
namespace WebApplication1.Controllers; | |
public class HomeController : Controller | |
{ | |
private readonly ILogger<HomeController> _logger; | |
private readonly BlogDbContext _blogDbContext; | |
public HomeController(ILogger<HomeController> logger, BlogDbContext blogDbContext) | |
{ | |
_logger = logger; | |
_blogDbContext = blogDbContext; | |
_blogDbContext.Database.EnsureCreated(); | |
} | |
public IActionResult Index() | |
{ | |
var movies = _blogDbContext.Posts.AsNoTracking().ToList(); | |
return View(movies); | |
} | |
[HttpPost] | |
[Route("/create")] | |
public IActionResult Create(string title) | |
{ | |
var movie = new Post | |
{ | |
Id = Guid.NewGuid(), | |
Title = title, | |
ReleaseDate = DateTime.Now | |
}; | |
_blogDbContext.Posts.Add(movie); | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit")] | |
public IActionResult Edit(Guid id, string title) | |
{ | |
var m = _blogDbContext.Posts.Single(x => x.Id == id); | |
m.UpdateDate = DateTime.Now; | |
m.Title = title; | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/update")] | |
public IActionResult EditUpdate(Guid id, string title) | |
{ | |
var m = new Post | |
{ | |
Id = id, | |
Title = title, | |
UpdateDate = DateTime.Now | |
}; | |
_blogDbContext.Update(m); // This will mark the entity as modified | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/attach")] | |
public IActionResult EditAttach(Guid id, string title) | |
{ | |
var m = new Post | |
{ | |
Id = id, | |
}; | |
_blogDbContext.Posts.Attach(m); | |
m.Title = title; | |
m.UpdateDate = DateTime.Now; | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/attach-v2")] | |
public IActionResult EditAttachV2(Guid id, string title) | |
{ | |
var m = new Post | |
{ | |
Id = id, | |
Title = $"{title}-v2", | |
UpdateDate = DateTime.Now | |
}; | |
_blogDbContext.Posts.Attach(m); | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/notrack-edit")] | |
public IActionResult NoTrackEdit(Guid id, string title) | |
{ | |
var m = _blogDbContext.Posts.AsNoTracking().Single(x => x.Id == id); | |
m.UpdateDate = DateTime.Now; | |
m.Title = title; | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/notrack-update")] | |
public IActionResult NoTrackUpdate(Guid id, string title) | |
{ | |
var m = _blogDbContext.Posts.AsNoTracking().Single(x => x.Id == id); | |
m.UpdateDate = DateTime.Now; | |
m.Title = title; | |
_blogDbContext.Update(m); // This will mark the entity as modified | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/notrack-attach")] | |
public IActionResult NoTrackAttach(Guid id, string title) | |
{ | |
var m = _blogDbContext.Posts.AsNoTracking().Single(x => x.Id == id); | |
m.UpdateDate = DateTime.Now; | |
m.Title = title; | |
_blogDbContext.Posts.Attach(m); | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/notrack-attach-v2")] | |
public IActionResult NoTrackAttachV2(Guid id, string title) | |
{ | |
var m = _blogDbContext.Posts.AsNoTracking().Single(x => x.Id == id); | |
_blogDbContext.Posts.Attach(m); | |
m.UpdateDate = DateTime.Now; | |
m.Title = $"{title}-v2"; | |
_blogDbContext.Entry(m).State = EntityState.Modified; | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/edit/notrack-attach-update")] | |
public IActionResult NoTrackAttachUpdate(Guid id, string title) | |
{ | |
var m = _blogDbContext.Posts.AsNoTracking().Single(x => x.Id == id); | |
m.UpdateDate = DateTime.Now; | |
m.Title = title; | |
_blogDbContext.Posts.Attach(m); | |
_blogDbContext.Posts.Update(m); | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
[HttpPost] | |
[Route("/delete")] | |
public IActionResult NoTrackAttachUpdate(Guid id) | |
{ | |
var m = _blogDbContext.Posts.Single(x => x.Id == id); | |
_blogDbContext.Posts.Remove(m); | |
_blogDbContext.SaveChanges(); | |
return RedirectToAction("Index"); | |
} | |
public IActionResult Privacy() | |
{ | |
return View(); | |
} | |
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)] | |
public IActionResult Error() | |
{ | |
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier }); | |
} | |
} | |
public class BlogDbContext : DbContext | |
{ | |
public BlogDbContext(DbContextOptions<BlogDbContext> options) : base(options) | |
{ | |
} | |
public override int SaveChanges() | |
{ | |
return base.SaveChanges(); | |
} | |
public DbSet<Post> Posts { get; set; } | |
} | |
public class Post | |
{ | |
public Guid Id { get; set; } | |
public string Title { get; set; } | |
public DateTime ReleaseDate { get; set; } | |
public DateTime? UpdateDate { get; set; } | |
} |
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