Добавить загрузку изображения телефона.

***
- Добавил поле в таблицу телефонов для хранения пути к изображению.
- Добавил возможность добавления изображения телефона. Если файл не добавлен пользователем, то устанавливается изображение по умолчанию.
***

#1

PhoneStore/Controllers/ErrorsController.cs

@@ -6,6 +6,7 @@ namespace PhoneStore.Controllers
 {
     public class ErrorsController : Controller
     {
+        private const string OppsMessage = "Oops... Ошибка";
         private readonly Dictionary<int, ErrorViewModel> _errorResolver;
 
         public ErrorsController()
@@ -15,25 +16,31 @@ namespace PhoneStore.Controllers
             {
                 StatusCode = 404,
                 Message = "Ресурс не найден",
-                Title = "Oops... Страница не найдена"
+                Title = OppsMessage
             });
             _errorResolver.Add(400, new ErrorViewModel
             {
                 StatusCode = 400,
                 Message = "Сервер не смог обработать запрос",
-                Title = "Oops... Ошибка"
+                Title = OppsMessage
             });
             _errorResolver.Add(500, new ErrorViewModel
             {
                 StatusCode = 500,
                 Message = "Сервер не смог обработать запрос",
-                Title = "Oops... Ошибка"
+                Title = OppsMessage
             });
             _errorResolver.Add(777, new ErrorViewModel
             {
                 StatusCode = 777,
                 Message = "Сущность не найдена",
-                Title = "Oops... Ошибка"
+                Title = OppsMessage
+            });
+            _errorResolver.Add(666, new ErrorViewModel
+            {
+                StatusCode = 666,
+                Message = "Такой файл уже существует. Возможно вы добавляете смартфон, который уже есть в базе данных.",
+                Title = OppsMessage
             });
         }
 

PhoneStore/Controllers/PhonesController.cs

 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -9,6 +8,7 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Hosting;
 using PhoneStore.Models;
 using PhoneStore.Services;
+using PhoneStore.Services.Abstractions;
 using PhoneStore.ViewModels;
 
 namespace PhoneStore.Controllers
@@ -18,14 +18,18 @@ namespace PhoneStore.Controllers
         private readonly MobileContext _db;
         private readonly IHostEnvironment _environment;
         private readonly UploadService _uploadService;
+        private readonly IDefaultPhoneImagePathProvider _imagePathProvider;
 
         public PhonesController(
             MobileContext db, 
-            IHostEnvironment environment, UploadService uploadService)
+            IHostEnvironment environment, 
+            UploadService uploadService, 
+            IDefaultPhoneImagePathProvider imagePathProvider)
         {
             _db = db;
             _environment = environment;
             _uploadService = uploadService;
+            _imagePathProvider = imagePathProvider;
         }
        
         [HttpGet]
@@ -56,19 +60,40 @@ namespace PhoneStore.Controllers
         }
         
         [HttpPost]
-        public IActionResult Create(PhoneCreateViewModel model)
+        public async Task<IActionResult> Create(PhoneCreateViewModel model)
         {
-            if (ModelState.IsValid)
+            try
             {
-                _db.Phones.Add(new Phone
+                if (ModelState.IsValid)
                 {
-                    Name = model.Name,
-                    Price = (decimal)model.Price!,
-                    BrandId = model.BrandId
-                });
-                _db.SaveChanges();
+                    string imagePath;
+                    if (model.File is null)
+                        imagePath = _imagePathProvider.GetPathToDefaultImage();
+                    else
+                    {
+                        var brand = _db.Brands.FirstOrDefault(b => b.Id == model.BrandId);
+                        string dirPath = Path.Combine(_environment.ContentRootPath, $"wwwroot\\images\\phoneImages\\{brand!.Name}");
+                        string fileName = $"{model.File.FileName}";
+                        await _uploadService.UploadAsync(dirPath, fileName, model.File);
+                        imagePath = $"images\\phoneImages\\{brand!.Name}\\{fileName}";
+                    }
+                
+                    _db.Phones.Add(new Phone
+                    {
+                        Image = imagePath,
+                        Name = model.Name,
+                        Price = (decimal)model.Price!,
+                        BrandId = model.BrandId
+                    });
+                    await _db.SaveChangesAsync();
             
-                return RedirectToAction("Index");
+                    return RedirectToAction("Index");
+                }
+            }
+            //TODO: Добавить кастомный exception
+            catch (FileNotFoundException e)
+            {
+                return RedirectToAction("Error", "Errors", new {statusCode = 666});
             }
 
             model.Brands = _db.Brands.ToList();

PhoneStore/Migrations/20220630161925_AddImageField.cs

@@ -33,7 +33,7 @@ namespace PhoneStore.Migrations
                 onDelete: ReferentialAction.Restrict);
             
             migrationBuilder.Sql(@$"UPDATE ""Phones""
-            SET ""Image"" = '~/Files/Phone/Images/DefaultImage.jpg'
+            SET ""Image"" = 'images\phoneImages\default.jpg'
             WHERE ""Image"" IS NULL;");
         }
 

PhoneStore/PhoneStore.csproj

@@ -18,7 +18,6 @@
 
     <ItemGroup>
       <Folder Include="Migrations" />
-      <Folder Include="Pages" />
     </ItemGroup>
 
 </Project>

PhoneStore/Services/Abstractions/IDefaultPhoneImagePathProvider.cs

+namespace PhoneStore.Services.Abstractions
+{
+    public interface IDefaultPhoneImagePathProvider
+    {
+        string GetPathToDefaultImage();
+    }
+}
\ No newline at end of file

PhoneStore/Services/DefaultPhoneImagePathProvider.cs

+using PhoneStore.Services.Abstractions;
+
+namespace PhoneStore.Services
+{
+    public class DefaultPhoneImagePathProvider : IDefaultPhoneImagePathProvider
+    {
+        private readonly string _path;
+
+        public DefaultPhoneImagePathProvider(string path)
+        {
+            _path = path;
+        }
+
+        public string GetPathToDefaultImage() => _path;
+    }
+}
\ No newline at end of file

PhoneStore/Services/UploadService.cs

@@ -8,6 +8,11 @@ namespace PhoneStore.Services
     {
         public async Task UploadAsync(string dirPath, string fileName, IFormFile file)
         {
+            if (!Directory.Exists(dirPath))
+                Directory.CreateDirectory(dirPath);
+            var absolutePath = Path.Combine(dirPath, fileName);
+            if (File.Exists(absolutePath))
+                throw new FileNotFoundException();
             await using var stream = new FileStream(Path.Combine(dirPath, fileName), FileMode.Create);
             await file.CopyToAsync(stream);
         }

PhoneStore/Startup.cs

@@ -29,6 +29,8 @@ namespace PhoneStore
             services.AddControllersWithViews();
             services.AddScoped<IBasketService, BasketService>();
             services.AddTransient<UploadService>();
+            services.AddTransient<IDefaultPhoneImagePathProvider>(_ =>
+                new DefaultPhoneImagePathProvider(Configuration["PathToDefaultAvatar:Path"]));
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.

PhoneStore/ViewModels/PhoneCreateViewModel.cs

 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using PhoneStore.Models;
 
@@ -17,5 +18,6 @@ namespace PhoneStore.ViewModels
         public decimal? Price { get; set; }
         public int BrandId { get; set; }
         public List<Brand> Brands { get; set; }
+        public IFormFile File { get; set; }
     }
 }
\ No newline at end of file

PhoneStore/Views/Phones/Create.cshtml

@@ -8,7 +8,7 @@
 <h2>Заполните форму для добавления устройства</h2>
 <div class="row">
     <div class="phone_add_form col-md-6">
-        <form asp-action="Create" asp-controller="Phones" method="post">
+        <form asp-action="Create" asp-controller="Phones" method="post" enctype="multipart/form-data">
             @{
                 await Html.RenderPartialAsync("PartialViews/PhoneFormPartialView", Model);
             }

PhoneStore/Views/Phones/Edit.cshtml

@@ -6,7 +6,7 @@
 }
 <div class="row">
     <div class="col-md-6">
-        <form asp-action="Edit" method="post">
+        <form asp-action="Edit" asp-controller="Phones" method="post" enctype="multipart/form-data">
             @{
                 await Html.RenderPartialAsync("PartialViews/PhoneFormPartialView");
             }

PhoneStore/Views/Phones/Index.cshtml

@@ -33,7 +33,7 @@ else
         @foreach (var phone in Model.Phones)
         {
             <tr>
-                <td><img class="phone_img" src="" alt="картинка паламатая"/></td>
+                <td><img class="phone_img" src="@phone.Image" alt="картинка паламатая"/></td>
                 <td>@phone.Name</td>
                 <td>@phone.Brand.Name</td>
                 <td>@phone.Price</td>

PhoneStore/Views/Phones/PartialViews/PhoneFormPartialView.cshtml

@@ -22,4 +22,11 @@
         }
     </select>
 </div>
+<div class="mb-3">
+  <label asp-for="File" class="form-label">Добавьте изображение</label>
+    <input class="form-control" type="file" asp-for="File">
+    <div class="form-text">
+        <span asp-validation-for="File" class="text-danger"></span>
+    </div>
+</div>
 

PhoneStore/appsettings.json

@@ -9,5 +9,8 @@
       "Microsoft.Hosting.Lifetime": "Information"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "PathToDefaultAvatar": {
+    "Path": "images\\phoneImages\\default.jpg"
+  }
 }