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Rename uploaded images in server before inserting it in the Rich Text Editor
21 Dec 20229 minutes to read
By using the insertImageSettings
property, you can specify the server handler to upload the selected image. Then you can bind the imageUploadSuccess
event, to receive the modified file name from the server and update it in the Rich Text Editor’s insert image dialog.
Refer controller
file for configure the server-side.
NOTE
The runnable demo application is available in this Github repository.
<ejs-richtexteditor id="editor" imageUploadSuccess="onImageUploadSuccess">
<e-richtexteditor-insertimagesettings saveUrl="/Home/Rename" path="./Uploads/"></e-richtexteditor-insertimagesettings>
</ejs-richtexteditor>
<script>
function onImageUploadSuccess(args) {
if (args.e.currentTarget.getResponseHeader('name') != null) {
args.file.name = args.e.currentTarget.getResponseHeader('name');
var filename = document.querySelectorAll(".e-file-name")[0];
filename.innerHTML = args.file.name.replace(document.querySelectorAll(".e-file-type")[0].innerHTML, '');
filename.title = args.file.name;
}
}
</script>
using System;
using System.IO;
using System.Diagnostics;
using System.Net.Http.Headers;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;
using System.Collections.Generic;
using Microsoft.AspNetCore.Hosting;
using RenameImage.Models;
namespace RenameImage.Controllers
{
public class HomeController : Controller
{
private int x = 0;
private string imageFile;
private IHostingEnvironment hostingEnv;
public IActionResult Index()
{
return View();
}
public HomeController(IHostingEnvironment env)
{
hostingEnv = env;
}
[HttpPost]
public void Rename(IList<IFormFile> UploadFiles)
{
try
{
foreach (IFormFile file in UploadFiles)
{
if (UploadFiles != null)
{
string filename = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
imageFile = filename;
string path = hostingEnv.WebRootPath + "\\Uploads" + $@"\{filename}";
// Create a new directory, if it does not exists
if (!Directory.Exists(hostingEnv.WebRootPath + "\\Uploads"))
{
Directory.CreateDirectory(hostingEnv.WebRootPath + "\\Uploads");
}
// Rename a uploaded image file name
while (System.IO.File.Exists(path))
{
imageFile = "rteImage" + x + "-" + filename;
path = hostingEnv.WebRootPath + "\\Uploads" + $@"\rteImage{x}-{filename}";
x++;
}
if (!System.IO.File.Exists(path))
{
using (FileStream fs = System.IO.File.Create(path))
{
file.CopyTo(fs);
fs.Flush();
fs.Close();
}
// Modified file name shared through response header by adding custom header
Response.StatusCode = 200;
Response.Headers.Add("name", imageFile);
Response.ContentType = "application/json; charset=utf-8";
}
}
}
}
catch (Exception)
{
Response.StatusCode = 204;
}
}
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
public IActionResult Error()
{
return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
}
}