everything/EveryThing/Pages/Projects/Create.cshtml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using EveryThing.Data;
using EveryThing.Models;
using EveryThing.Models.Project;
using Microsoft.AspNetCore.Authorization;

namespace EveryThing.Pages.Projects
{
    [Authorize(Roles = "Administrator,ProjecThingUser")]
    public class CreateModel : PageModel
    {
        private readonly ApplicationDbContext _context;
        private readonly UserManager<IdentityApplicationUser> _userManager;
        private readonly SignInManager<IdentityApplicationUser> _loginManager;
        private readonly RoleManager<IdentityApplicationRole> _roleManager;

        public CreateModel(ApplicationDbContext context, UserManager<IdentityApplicationUser> userManager, SignInManager<IdentityApplicationUser> loginManager, RoleManager<IdentityApplicationRole> roleManager)
        {
            _context = context;
            _userManager = userManager;
            _loginManager = loginManager;
            _roleManager = roleManager;
        }

        public IActionResult OnGet()
        {
            var user = _userManager.GetUserAsync(User).Result;

            ViewData["IdPartnerFk"] = new SelectList(_context.CodeTablePartners.Where(x => x.IdCompanyFk == user.IdCompanyFk && x.Active), "IdPartner", "Title");

            return Page();
        }

        [BindProperty]
        public Models.Project.Project Project { get; set; }

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

            var user = _userManager.GetUserAsync(User).Result;

            Project.IdCompanyFk = user.IdCompanyFk;
            Project.Status = ProjectStatus.Opened;

            Project.ProjectYear = DateTime.Now.Year;
            var items = _context.Projects
                .Where(x => x.IdCompanyFk == user.IdCompanyFk
                            && x.ProjectYear == Project.ProjectYear).ToList();

            Project.ProjectNumber = items.Count <= 0 ? 1 : items.Max(x => x.ProjectNumber) + 1;

            _context.Projects.Add(Project);
            await _context.SaveChangesAsync();

            return RedirectToPage("./Edit", new { id = Project.IdProject });
        }
    }
}