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ZpcBulletinBoard/Pages/BoardsLinks/Index.cshtml.cs

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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.EntityFrameworkCore;
+using Microsoft.AspNetCore.Authorization;
+using ZpcBulletinBoard.Data;
+using ZpcBulletinBoard.Models.Editor;
+
+namespace ZpcBulletinBoard.Pages.BoardsLinks
+{
+    [Authorize]
+    public class IndexModel(ApplicationDbContext context) : PageModel
+    {
+        public IList<BulletinBoardPage> Pages { get;set; }
+
+        public async Task OnGetAsync()
+        {
+            Pages = await context.BulletinBoardPage.OrderBy(x => x.Name).ToListAsync();
+        }
+
+        //Get
+        public IActionResult OnGetBoards()
+        {
+            var boards = context.BulletinBoards
+                .Include(x => x.Links.OrderBy(y => y.Order))
+                .ThenInclude(x => x.BulletinBoardPage)
+                .ToList();
+
+            foreach (var board in boards)
+            {
+                foreach (var link in board.Links)
+                {
+                    link.BulletinBoardPage.Links = null;
+                    link.BulletinBoard = null;
+                }
+            }
+
+            return  new JsonResult(new { successful = true, error = $"", boards });
+        }
+
+
+        //Post
+        public IActionResult OnPostAddLink(int idBoard, int idPage)
+        {
+            var order = 1;
+            var links = context.BulletinBoardPageLinks.Where(x => x.IdBulletinBoardFk == idBoard).ToList();
+            if (links.Any())
+                order = links.Max(x => x.IdLink) + 1;
+
+            var link = new BulletinBoardPageLink
+            {
+                Duration = 30,
+                IdBulletinBoardFk = idBoard,
+                IdBulletinBoardPageFk = idPage,
+                Order = order
+            };
+
+            context.BulletinBoardPageLinks.Add(link);
+
+            context.SaveChanges();
+
+            link = context.BulletinBoardPageLinks.Include(x => x.BulletinBoardPage).First(x => x.IdLink == link.IdLink);
+
+            link.BulletinBoardPage.Links = null;
+
+            return new JsonResult(new { successful = true, error = $"", link });
+        }
+    }
+}