abzarasadi/Pages/Admin/Products/Create.cshtml.cs

using AsadiTools.Data;
using AsadiTools.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using System.ComponentModel.DataAnnotations;

namespace AsadiTools.Pages.Admin.Products;

[Authorize(AuthenticationSchemes = "AdminCookie")]
public class CreateModel(AppDbContext db) : PageModel
{
    [BindProperty] public ProductInput Input { get; set; } = new();

    public void OnGet() { }

    public async Task<IActionResult> OnPostAsync()
    {
        if (!ModelState.IsValid) return Page();
        db.Products.Add(new Product
        {
            NameFa        = Input.NameFa,
            NameEn        = Input.NameEn,
            Description   = Input.Description,
            Price         = Input.Price,
            DiscountPrice = Input.DiscountPrice,
            Category      = Input.Category,
            Brand         = string.IsNullOrEmpty(Input.Brand) ? null : Input.Brand,
            Sku           = Input.Sku,
            Stock         = Input.Stock,
            IsActive      = Input.IsActive,
            ImageUrl      = string.IsNullOrWhiteSpace(Input.ImageUrl) ? null : Input.ImageUrl,
        });
        await db.SaveChangesAsync();
        return RedirectToPage("/Admin/Products/Index");
    }
}

public class ProductInput
{
    [Required] public string NameFa { get; set; } = string.Empty;
    public string? NameEn { get; set; }
    public string? Description { get; set; }
    [Required, Range(1, int.MaxValue)] public decimal Price { get; set; }
    public decimal? DiscountPrice { get; set; }
    [Required] public string Category { get; set; } = "carbon";
    public string? Brand { get; set; }
    public string? Sku { get; set; }
    public int Stock { get; set; }
    public bool IsActive { get; set; } = true;
    public string? ImageUrl { get; set; }
}