Angular 16 Multiple File Upload Example Tutorial

Hi,

This article will give you an example of angular 16 multiple file upload. This article goes in detailed on multiple file upload in angular 16. If you have a question about angular 16 multiple file upload example then I will give a simple example with a solution. Here you will learn angular 16 multiple file upload with preview. So, let us see in detail an example.

In this example, I want to share with you how to multiple file upload with form data in angular 16. we will see an example of angular 16 reactive from multiple file uploads. we will use the reactive form with multiple file uploads in angular 16 step by step. I also created an API for storing files in folders using PHP for angular 16 multiple file upload.

Here, we will simply create a reactive form using formGroup. input file onchange event we will add the file to another formgroup element. then after clicking on submit button, we will call web API to store that file on the server.

I have written step-by-step multiple file uploading with the angular 16 application and also created web services using PHP. so let's follow the bellowing steps and get a preview like as below:

Preview:

Step 1: Create New App

You can easily create your angular app using bellow command:

ng new my-new-app

Step 2: Import Module

In this step, we need to import HttpClientModule, FormsModule and ReactiveFormsModule to app.module.ts file. so let's import it as like bellow:

src/app/app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { HttpClientModule } from '@angular/common/http';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
   
import { AppComponent } from './app.component';
   
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    FormsModule,
    ReactiveFormsModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Step 3: Updated View File

Now here, we will updated our html file. we will create simple reactive form with input file element.

In this file i used bootstrap 5 class, if you want to use bootstrap then you can follow this link: Install Bootstrap 5 in Angular 16

so let's put bellow code:

src/app/app.component.html

<h1>Angular 16 Multiple File Upload Example - ItSolutionStuff.com</h1>
         
<form [formGroup]="myForm" (ngSubmit)="submit()">
    
    <div class="form-group">
        <label for="name">Name</label>
        <input 
            formControlName="name"
            id="name" 
            type="text" 
            class="form-control">
        <div *ngIf="f['name'].touched && f['name'].invalid" class="alert alert-danger">
            <div *ngIf="f['name'].errors && f['name'].errors['required']">Name is required.</div>
            <div *ngIf="f['name'].errors && f['name'].errors['minlength']">Name should be 3 character.</div>
        </div>
    </div>
       
    <div class="form-group">
        <label for="file">File</label>
        <input 
            formControlName="file"
            id="file" 
            type="file" 
            multiple
            class="form-control"
            (change)="onFileChange($event)">
        <div *ngIf="f['file'].touched && f['file'].invalid" class="alert alert-danger">
            <div *ngIf="f['file'].errors && f['file'].errors['required']">File is required.</div>
        </div>
    </div>
            
    <button class="btn btn-primary" [disabled]="myForm.invalid" type="submit">Submit</button>
</form>

Step 4: Use Component ts File

Now we need to update our component.ts file with formGroup and formControl element.

i used my local api file url 'http://localhost:8001/upload.php', you can use your api there.

so, let's update as like bellow:

src/app/app.component.ts

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { FormGroup, FormControl, Validators} from '@angular/forms';
        
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  myFiles: any = [];
    
  /*------------------------------------------
  --------------------------------------------
  Declare Form
  --------------------------------------------
  --------------------------------------------*/
  myForm = new FormGroup({
    name: new FormControl('', [Validators.required, Validators.minLength(3)]),
    file: new FormControl('', [Validators.required])
  });
    
  /*------------------------------------------
  --------------------------------------------
  Created constructor
  --------------------------------------------
  --------------------------------------------*/
  constructor(private http: HttpClient) { }
    
  /**
   * Write code on Method
   *
   * @return response()
   */
  get f(){
    return this.myForm.controls;
  }
    
  /**
   * Write code on Method
   *
   * @return response()
   */
  onFileChange(event:any) {
   
        for (var i = 0; i < event.target.files.length; i++) { 
            this.myFiles.push(event.target.files[i]);
        }
  }
    
  /** 
   * Write code on Method
   *
   * @return response()
   */
  submit(){
    const formData = new FormData();
   
    for (var i = 0; i < this.myFiles.length; i++) { 
      formData.append("file[]", this.myFiles[i]);
    }
    
    this.http.post('http://localhost:8001/upload.php', formData)
      .subscribe(res => {
        console.log(res);
        alert('Uploaded Successfully.');
      })
  }
}

Now we are ready to run our example, we will create api file using php. so you can create update.php file with "upload" folder and run with different port and call it. so let's create upload.php file as like bellow:

upload.php

<?php
  
    header("Access-Control-Allow-Origin: *");
    header("Access-Control-Allow-Methods: PUT, GET, POST");
    header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");
        
    $folderPath = "upload/";
      
    $file_names = $_FILES["file"]["name"];
    for ($i = 0; $i < count($file_names); $i++) {
        $file_name=$file_names[$i];
        $extension = end(explode(".", $file_name));
        $original_file_name = pathinfo($file_name, PATHINFO_FILENAME);
        $file_url = $original_file_name . "-" . date("YmdHis") . "." . $extension;
        move_uploaded_file($_FILES["file"]["tmp_name"][$i], $folderPath . $file_url);
    }
  
?>

Run PHP & Angular App:

All the required steps have been done, now you have to type the given below command and hit enter to run the Angular app:

Run Angular App:

ng serve

Run PHP API:

php -S localhost:8001

Now, Go to your web browser, type the given URL and view the app output:

http://localhost:4200

Now you can run and check it.

I hope it can help you...