Rename Images on the Server in the Angular Rich Text Editor Component

28 May 20267 minutes to read

By using the insertImageSettings property, you can specify the server handler that uploads the selected image. Then, by binding the imageUploadSuccess event, you can receive the renamed file from the server and update it in the Rich Text Editor’s insert image dialog.

app.component.ts

import { RichTextEditorModule } from '@syncfusion/ej2-angular-richtexteditor'
import { Component, ViewChild } from '@angular/core';
import { ToolbarService, LinkService, ImageService, HtmlEditorService, PasteCleanupService, QuickToolbarService, RichTextEditorComponent } from '@syncfusion/ej2-angular-richtexteditor';

@Component({
    imports: [
        RichTextEditorModule
    ],
    standalone: true,
    selector: 'app-root',
    template: `<ejs-richtexteditor id='defaultRTE' #sample [value]="value" (imageUploadSuccess)='onImageUploadSuccess($event)' [insertImageSettings]='insertImageSettings' [toolbarSettings]='toolbarSettings'></ejs-richtexteditor>`,
    providers: [ToolbarService, LinkService, ImageService, PasteCleanupService, QuickToolbarService, HtmlEditorService]
})

export class AppComponent {
    @ViewChild('sample') public rteObj?: RichTextEditorComponent;

    private hostUrl: string =
        'https://services.syncfusion.com/angular/production/';

    public toolbarSettings: Object = {
        items: ['Bold', 'Italic', 'Underline', 'StrikeThrough', '|',
            'FontName', 'FontSize', 'FontColor', 'BackgroundColor',
            'LowerCase', 'UpperCase', '|',
            'Formats', 'Alignments', 'OrderedList', 'UnorderedList',
            'Outdent', 'Indent', '|',
            'CreateLink', 'Image', '|', 'ClearFormat', 'Print',
            'SourceCode', 'FullScreen', '|', 'Undo', 'Redo']
    };

    public value: string =
        "<p>The Rich Text Editor component is the WYSIWYG ('what you see is what you get') editor that provides the best user experience to create and update content. Users can format their content using standard toolbar commands.</p>";

    public insertImageSettings: object = {
        saveUrl: this.hostUrl + 'api/RichTextEditor/SaveFile',
        removeUrl: this.hostUrl + 'api/RichTextEditor/DeleteFile',
        path: this.hostUrl + 'RichTextEditor/',
    };

    public onImageUploadSuccess = (args: any) => {
        if (args.e.currentTarget.getResponseHeader('name') != null) {
            args.file.name = args.e.currentTarget.getResponseHeader('name');
            let filename: any = document.querySelectorAll(".e-file-name")[0];
            filename.innerHTML = args.file.name.replace(document.querySelectorAll(".e-file-type")[0].innerHTML, '');
            filename.title = args.file.name;
        }
    }
}

main.ts

import { bootstrapApplication } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import 'zone.js';
bootstrapApplication(AppComponent).catch((err) => console.error(err));

To configure the server-side handler, refer the below code.

[AcceptVerbs("Post")]
public void Rename()
{
    try
    {
        var httpPostedFile = System.Web.HttpContext.Current.Request.Files["UploadFiles"];
        imageFile = httpPostedFile.FileName;
        if (httpPostedFile != null)
        {
            var fileSave = System.Web.HttpContext.Current.Server.MapPath("~/Images");
            if (!Directory.Exists(fileSave))
            {
                Directory.CreateDirectory(fileSave);
            }
            var fileName = Path.GetFileName(httpPostedFile.FileName);
            var fileSavePath = Path.Combine(fileSave, fileName);
            while (System.IO.File.Exists(fileSavePath))
            {
                imageFile = "rteImage" + x + "-" + fileName;
                fileSavePath = Path.Combine(fileSave, imageFile);
                x++;
            }
            if (!System.IO.File.Exists(fileSavePath))
            {
                httpPostedFile.SaveAs(fileSavePath);
                HttpResponse Response = System.Web.HttpContext.Current.Response;
                Response.Clear();
                Response.Headers.Add("name", imageFile);
                Response.ContentType = "application/json; charset=utf-8";
                Response.StatusDescription = "File uploaded succesfully";
                Response.End();
            }
        }
    }
    catch (Exception e)
    {
        HttpResponse Response = System.Web.HttpContext.Current.Response;
        Response.Clear();
        Response.ContentType = "application/json; charset=utf-8";
        Response.StatusCode = 204;
        Response.Status = "204 No Content";
        Response.StatusDescription = e.Message;
        Response.End();
    }
}