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Getting started with Angular Uploader component

02 Aug 2021 / 5 minutes to read

This section explains how to create and configure the uploader component in Angular. The uploader component is available in @syncfusion/ej2-angular-inputs package. Utilize this package to render the uploader Component.

Dependencies

The following packages are required to render the uploader component in your Angular application.

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|-- @syncfusion/ej2-angular-inputs
    |-- @syncfusion/ej2-angular-base
    |-- @syncfusion/ej2-angular-popups
    |-- @syncfusion/ej2-angular-buttons
    |-- @syncfusion/ej2-inputs
        |-- @syncfusion/ej2-base
        |-- @syncfusion/ej2-popups
        |-- @syncfusion/ej2-buttons

Setup angular environment

Angular provides the easiest way to set angular CLI projects using Angular CLI tool.

Install the CLI application globally to your machine.

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npm install -g @angular/cli

Create a new application

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ng new syncfusion-angular-uploader

By default, it install the CSS style base application. To setup with SCSS, pass —style=scss argument on create project.

Example code snippet.

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ng new syncfusion-angular-uploader --style=scss

Navigate to the created project folder.

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cd syncfusion-angular-uploader

Adding Uploader package

All the available Essential JS 2 packages are published in npmjs.com registry.

To install uploader component, use the following command.

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npm install @syncfusion/ej2-angular-inputs --save
(or)
npm i @syncfusion/ej2-angular-inputs --save

The —save will instruct NPM to include the uploader package inside of the dependencies section of the package.json.

Initialize Uploader

The below couple of steps describes to initialize the uploader component in Angular application.

  • Import UploaderModule from @syncfusion/ej2-angular-inputs package, inject into imports section of NgModule in the module file src/app/app.module.ts to use the Uploader component across the application.
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import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent }  from './app.component';
import { UploaderModule  } from '@syncfusion/ej2-angular-inputs';
@NgModule({
  imports:      [ BrowserModule , UploaderModule],
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

Adding CSS reference

The following CSS files are available in ../node_modules/@syncfusion package folder. This can be referenced in [src/styles.css] using following code.

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@import '../node_modules/@syncfusion/ej2-base/styles/material.css';
@import '../node_modules/@syncfusion/ej2-buttons/styles/material.css';
@import '../node_modules/@syncfusion/ej2-inputs/styles/material.css';
@import '../node_modules/@syncfusion/ej2-popups/styles/material.css';
@import '../node_modules/@syncfusion/ej2-angular-inputs/styles/material.css';

The Custom Resource Generator (CRG) is an online web tool, which can be used to generate the custom script and styles for a set of specific components. This web tool is useful to combine the required component scripts and styles in a single file.

Adding Uploader component

Modify the template in [src/app/app.component.ts] file to render the Uploader component. Add the Angular Uploader by using <ejs-uploader> selector in template section of the app.component.ts file.

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import { Component } from '@angular/core';

@Component({
selector: 'app-root',
template: `
           <ejs-uploader #defaultupload  [autoUpload]='false'></ejs-uploader>
          `
})
export class AppComponent {
constructor() {
}
}

Running the application

After completing the configuration required to render the uploader, run the application using the following command to display the output in your default browser.

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ng serve

From v16.2.41 version, the Essential JS2 AJAX library has been integrated for uploader server requests. Hence, use the third party promise library like blue-bird to use the uploader in Internet Explorer.

The below example shows a uploader component.

Source
Preview
app.component.ts
app.module.ts
main.ts
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import { Component } from '@angular/core';

@Component({
selector: 'app-root',
template: `
           <ejs-uploader #defaultupload  [autoUpload]='false'></ejs-uploader>
          `
})
export class AppComponent {
constructor() {
}
}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { UploaderModule } from '@syncfusion/ej2-angular-inputs';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, UploaderModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {
}
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Adding drop area

By default, the uploader component allows to upload files by drag the files from file explorer, and drop into the drop area. You can configure any other external element as drop target using dropArea property.

In the following sample, external element is configured as drop target to uploader component.

Source
Preview
app.component.ts
app.module.ts
main.ts
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import { Component } from '@angular/core';

@Component({
selector: 'app-root',
template: `
           <div id='droparea'>
        Drop files here to upload
    </div>
    <div id='uploadfile' >
           <ejs-uploader #defaultupload  [autoUpload]='false' [dropArea]='dropEle'></ejs-uploader>
           </div>
          `
})
export class AppComponent {
public dropEle: HTMLElement ;
ngOnInit() {
      this.dropEle = document.getElementById('droparea');
}
constructor() {
}
}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { UploaderModule } from '@syncfusion/ej2-angular-inputs';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, UploaderModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {
}
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Configure asynchronous settings

By default, the uploader component process the files in Asynchronous mode. Define the properties saveUrl and removeUrl to handle the save and remove action as follows.

Source
Preview
app.component.ts
app.module.ts
main.ts
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import { Component } from '@angular/core';

@Component({
selector: 'app-root',
template: `
           <div id='droparea'>
        Drop files here to upload
    </div>
    <div id='uploadfile' >
           <ejs-uploader #defaultupload  [autoUpload]='false' [dropArea]='dropEle' [asyncSettings]='path'></ejs-uploader>
           </div>
          `
})
export class AppComponent {
 public path: Object = {
  saveUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Save',
  removeUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Remove' };
constructor() {
}
}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { UploaderModule } from '@syncfusion/ej2-angular-inputs';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, UploaderModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {
}
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

Handle success and failed upload

You can handle the success and failure actions using the success and failure events. To handle these events, define the function and assign it to corresponding event as follows.

Source
Preview
app.component.ts
app.module.ts
main.ts
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import { Component } from '@angular/core';

@Component({
selector: 'app-root',
template: `
           <ejs-uploader #defaultupload [autoUpload]='false' [dropArea]='dropEle' [asyncSettings]='path' (success)="onUploadSuccess($event)" (failure)="onUploadFailure($event)"></ejs-uploader>
          `
})
export class AppComponent {
public path: Object = {
  saveUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Save',
  removeUrl: 'https://ej2.syncfusion.com/services/api/uploadbox/Remove' };
  public onUploadSuccess(args: any): void  {
    if (args.operation === 'upload') {
        console.log('File uploaded successfully');
    }
}

public onUploadFailure(args: any): void  {
console.log('File failed to upload');
}

public dropEle: HTMLElement ;
ngOnInit() {
      this.dropEle = document.getElementById('droparea');
}

constructor() {
}
}
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import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { UploaderModule } from '@syncfusion/ej2-angular-inputs';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, UploaderModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {
}
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import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

You can also explore Angular File Upload feature tour page for its groundbreaking features. You can also explore our Angular File Upload example to understand how to browse the files which you want to upload to the server.

See Also