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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using CoreWiki.Models;
namespace CoreWiki.Pages
{
public class EditModel : PageModel
{
private readonly CoreWiki.Models.ApplicationDbContext _context;
public EditModel(CoreWiki.Models.ApplicationDbContext context)
{
_context = context;
}
[BindProperty]
public Article Article { get; set; } = default!;
public async Task<IActionResult> OnGetAsync(string id)
{
if (id == null || _context.Articles == null)
{
return NotFound();
}
var article = await _context.Articles.FirstOrDefaultAsync(m => m.Topic == id);
if (article == null)
{
return NotFound();
}
Article = article;
return Page();
}
// To protect from overposting attacks, enable the specific properties you want to bind to.
// For more details, see https://aka.ms/RazorPagesCRUD.
public async Task<IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return Page();
}
_context.Attach(Article).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!ArticleExists(Article.Topic))
{
return NotFound();
}
else
{
throw;
}
}
return Redirect($"./{(Article.Topic == "HomePage" ? "" : Article.Topic)}");
}
private bool ArticleExists(string id)
{
return (_context.Articles?.Any(e => e.Topic == id)).GetValueOrDefault();
}
}
}
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