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GuzzterGuzzter
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Added image upload
1 parent 4f6c3c9 commit 7328db0

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11 files changed

+282
-22
lines changed

11 files changed

+282
-22
lines changed

‎BookCollection/BookCollection.csproj‎

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@@ -213,6 +213,8 @@
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<Compile Include="Helpers\BC.cs" />
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<Compile Include="Helpers\Converters.cs" />
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<Compile Include="Helpers\DownloadFileActionResult.cs" />
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<Compile Include="Helpers\ImageResult.cs" />
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<Compile Include="Helpers\ImageUpload.cs" />
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<Compile Include="Helpers\Validators.cs" />
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<Compile Include="Logging\ILogger.cs" />
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<Compile Include="Logging\TraceLogger.cs" />
@@ -559,9 +561,12 @@
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<Content Include="Views\NewBooks\Details.cshtml" />
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<Content Include="Views\NewBooks\Edit.cshtml" />
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<Content Include="Views\NewBooks\Index.cshtml" />
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<Content Include="Views\Books\UploadCover.cshtml" />
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<Content Include="Views\Books\UploadCompleted.cshtml" />
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</ItemGroup>
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<ItemGroup>
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<Folder Include="App_Data\" />
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<Folder Include="Images\Uploaded\" />
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</ItemGroup>
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<ItemGroup>
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<Content Include="packages.config" />

‎BookCollection/Controllers/BooksController.cs‎

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@@ -9,6 +9,7 @@
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using BookCollection.DAL;
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using BookCollection.Models;
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using PagedList;
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using BookCollection.Helpers;
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namespace BookCollection.Controllers
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{
@@ -288,5 +289,75 @@ protected override void Dispose(bool disposing)
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}
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base.Dispose(disposing);
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}
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public ActionResult UploadCover(int? id)
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{
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if (id == null)
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{
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return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
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}
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Book book = _db.Query<Book>().FirstOrDefault(b => b.BookID == id);
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if (book == null)
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{
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return HttpNotFound();
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}
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return View(book);
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}
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public ActionResult UploadCompleted()
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{
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return View();
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}
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[HttpPost]
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public ActionResult UploadCover(FormCollection formCollection)
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{
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int id = Convert.ToInt32(formCollection["ID"]);
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if (id == null)
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{
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return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
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}
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Book book = _db.Query<Book>().FirstOrDefault(b => b.BookID == id);
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if (book == null)
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{
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return HttpNotFound();
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}
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foreach (string item in Request.Files)
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{
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HttpPostedFileBase file = Request.Files[item] as HttpPostedFileBase;
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if (file.ContentLength == 0)
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continue;
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if (file.ContentLength > 0)
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{
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// width + height will force size, care for distortion
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//Exmaple: ImageUpload imageUpload = new ImageUpload { Width = 800, Height = 700 };
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// height will increase the width proportionally
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//Example: ImageUpload imageUpload = new ImageUpload { Height= 600 };
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// width will increase the height proportionally
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ImageUpload imageUpload = new ImageUpload { Width = 300 };
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// rename, resize, and upload
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//return object that contains {bool Success,string ErrorMessage,string ImageName}
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ImageResult imageResult = imageUpload.RenameUploadFile(file);
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if (imageResult.Success)
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{
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//TODO: write the filename to the db
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Console.WriteLine(imageResult.ImageName);
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return RedirectToAction("UploadCompleted");
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}
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else
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{
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// use imageResult.ErrorMessage to show the error
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ViewBag.Error = imageResult.ErrorMessage;
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}
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}
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}
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return View();
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}
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}
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}

‎BookCollection/Helpers/ImageResult.cs‎

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@@ -0,0 +1,14 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Web;
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namespace BookCollection.Helpers
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{
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public class ImageResult
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{
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public bool Success { get; set; }
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public string ImageName { get; set; }
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public string ErrorMessage { get; set; }
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}
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}

‎BookCollection/Helpers/ImageUpload.cs‎

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@@ -0,0 +1,144 @@
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Linq;
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using System.Web;
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namespace BookCollection.Helpers
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{
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public class ImageUpload
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{
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// set default size here
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public int Width { get; set; }
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public int Height { get; set; }
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// folder for the upload, you can put this in the web.config
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private readonly string UploadPath = "~/Images/Uploaded/";
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public ImageResult RenameUploadFile(HttpPostedFileBase file, Int32 counter = 0)
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{
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var fileName = Path.GetFileName(file.FileName);
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string prepend = "item_";
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string finalFileName = prepend + ((counter).ToString()) + "_" + fileName;
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if (System.IO.File.Exists
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(HttpContext.Current.Request.MapPath(UploadPath + finalFileName)))
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{
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//file exists => add country try again
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return RenameUploadFile(file, ++counter);
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}
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//file doesn't exist, upload item but validate first
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return UploadFile(file, finalFileName);
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}
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private ImageResult UploadFile(HttpPostedFileBase file, string fileName)
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{
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ImageResult imageResult = new ImageResult { Success = true, ErrorMessage = null };
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var path = Path.Combine(HttpContext.Current.Request.MapPath(UploadPath), fileName);
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string extension = Path.GetExtension(file.FileName);
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//make sure the file is valid
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if (!ValidateExtension(extension))
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{
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imageResult.Success = false;
49+
imageResult.ErrorMessage = "Invalid Extension";
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return imageResult;
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}
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try
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{
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file.SaveAs(path);
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Image imgOriginal = Image.FromFile(path);
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//pass in whatever value you want
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Image imgActual = Scale(imgOriginal);
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imgOriginal.Dispose();
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imgActual.Save(path);
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imgActual.Dispose();
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imageResult.ImageName = fileName;
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return imageResult;
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}
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catch (Exception ex)
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{
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// you might NOT want to show the exception error for the user
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// this is generally logging or testing
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imageResult.Success = false;
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imageResult.ErrorMessage = ex.Message;
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return imageResult;
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}
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}
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private bool ValidateExtension(string extension)
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{
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extension = extension.ToLower();
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switch (extension)
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{
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case ".jpg":
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return true;
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case ".png":
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return true;
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case ".gif":
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return true;
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case ".jpeg":
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return true;
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default:
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return false;
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}
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}
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private Image Scale(Image imgPhoto)
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{
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float sourceWidth = imgPhoto.Width;
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float sourceHeight = imgPhoto.Height;
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float destHeight = 0;
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float destWidth = 0;
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int sourceX = 0;
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int sourceY = 0;
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int destX = 0;
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int destY = 0;
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// force resize, might distort image
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if (Width != 0 && Height != 0)
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{
112+
destWidth = Width;
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destHeight = Height;
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}
115+
// change size proportially depending on width or height
116+
else if (Height != 0)
117+
{
118+
destWidth = (float)(Height * sourceWidth) / sourceHeight;
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destHeight = Height;
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}
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else
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{
123+
destWidth = Width;
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destHeight = (float)(sourceHeight * Width / sourceWidth);
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}
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Bitmap bmPhoto = new Bitmap((int)destWidth, (int)destHeight,
128+
PixelFormat.Format32bppPArgb);
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bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution);
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Graphics grPhoto = Graphics.FromImage(bmPhoto);
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grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic;
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grPhoto.DrawImage(imgPhoto,
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new Rectangle(destX, destY, (int)destWidth, (int)destHeight),
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new Rectangle(sourceX, sourceY, (int)sourceWidth, (int)sourceHeight),
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GraphicsUnit.Pixel);
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grPhoto.Dispose();
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return bmPhoto;
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}
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}
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}

‎BookCollection/Models/Book.cs‎

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@@ -91,6 +91,8 @@ public int MainAuthorID
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public int PublisherID { get; set; }
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public int MainSubjectID { get; set; }
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public string ImageUrl { get; set; }
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public virtual ICollection<Author> Authors { get; set; }
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public virtual Publisher Publisher { get; set; }
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‎BookCollection/Views/Books/Details.cshtml‎

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<div>
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<p>
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@BC.IconButton("Books", "Edit", "pencil", "Edit", new { id = Model.BookID })
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@BC.IconButton("Books", "UploadCover", "picture", "Upload book cover", new { id = Model.BookID })
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@BC.IconButton("Books", "Index", "th-list", "Back to List")
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</p>
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<hr />

‎BookCollection/Views/Books/Index.cshtml‎

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@@ -32,6 +32,9 @@
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</th>
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<th>
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@Html.ActionLink("Title", "Index", new { sortOrder = ViewBag.NameSortParm, currentFilter = ViewBag.CurrentFilter })
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<span class="glyphicon glyphicon-sort-by-alphabet" aria-hidden="true"></span>
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</th>
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<th>
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@Html.ActionLink("Author", "Index", new { sortOrder = ViewBag.AuthorSortParm, currentFilter = ViewBag.CurrentFilter })

‎BookCollection/Views/Books/UploadCompleted.cshtml‎

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@{
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ViewBag.Title = "UploadCompleted";
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Layout = "~/Views/Shared/_Layout.cshtml";
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}
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<h2>UploadCompleted</h2>
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<p>
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@BC.IconButton("Books", "Index", "th-list", "Back to List")
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</p>

‎BookCollection/Views/Books/UploadCover.cshtml‎

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@model BookCollection.Models.Book
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@{
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ViewBag.Title = "UploadCover";
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Layout = "~/Views/Shared/_Layout.cshtml";
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}
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<p>
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@BC.IconButton("Books", "Edit", "pencil", "Edit", new { id = Model.BookID })
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@BC.IconButton("Books", "Index", "th-list", "Back to List")
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</p>
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<hr />
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<div class="row">
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<div class="col-md-12">
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<h2>Upload book cover for @Model.Title</h2>
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@if (ViewBag.Error != null)
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{
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<h4 style="color:red">@ViewBag.Error</h4>
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}
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@using (Html.BeginForm("UploadCover", "Home",
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FormMethod.Post, new { enctype = "multipart/form-data" }))
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{
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<div>Upload Image</div>
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@Html.HiddenFor(Model => Model.BookID)
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<input type="file" name="avatar" />
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<input type="submit" value="upload" />
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}
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</div>
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</div>

‎BookCollection/Views/Publishers/Details.cshtml‎

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@@ -4,24 +4,14 @@
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ViewBag.Title = "Publisher details";
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}
66

7-
<h2>Publisher</h2>
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<h2>Publisher: @Html.DisplayFor(model => model.Name)</h2>
88

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<div>
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<p>
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@BC.IconButton("Publishers", "Edit", "pencil", "Edit", new { id = Model.PublisherID })
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@BC.IconButton("Publishers", "Index", "th-list", "Back to List")
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</p>
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<hr />
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<dl class="dl-horizontal">
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<dt>
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@Html.DisplayNameFor(model => model.Name)
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</dt>
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<dd>
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@Html.DisplayFor(model => model.Name)
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</dd>
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</dl>
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</div>
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