Angular 13 File Upload Tutorial

Angular 13 file upload; In this tutorial, i am going to show you how to upload files in angular 13 apps.

Angular 13 File Upload Example

Use the below given steps to upload files in angular 13 apps with reactive form:

  • Step 1 – Create New Angular App
  • Step 2 – Import Module
  • Step 3 – Create File Upload Form on View File
  • Step 4 – Update Component ts File
  • Step 5 – Create Upload.php File
  • Step 6 – Start Angular App And PHP Server

Step 1 – Create New Angular App

Run the following command on terminal to install angular app:

ng new my-new-app

Step 2 – Import Module

Then, Open app.module.ts file and import HttpClientModule, FormsModule and ReactiveFormsModule to app.module.ts file like following:

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

Step 3 – Create File Upload Form on View File

Go to src/app/app.component.html and update the following code into it:

<h1>Angular 13 File Upload Tutorial Example - Laratutorials.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" 
            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 – Update Component ts File

Go to the src/app directory and open app.component.ts. Then add the following code like formGroup and formControl element on component.ts file:

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 {
  
  /*------------------------------------------
  --------------------------------------------
  Declare Form
  --------------------------------------------
  --------------------------------------------*/
  myForm = new FormGroup({
    name: new FormControl('', [Validators.required, Validators.minLength(3)]),
    file: new FormControl('', [Validators.required]),
    fileSource: 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) {
  
    if (event.target.files.length > 0) {
      const file = event.target.files[0];
      this.myForm.patchValue({
        fileSource: file
      });
    }
  } 
  
  /**
   * Write code on Method
   *
   * @return response()
   */
  submit(){
    const formData = new FormData();
    formData.append('file', this.myForm.get('fileSource')?.value);
     
    this.http.post('http://localhost:8001/upload.php', formData)
      .subscribe(res => {
        console.log(res);
        alert('Uploaded Successfully.');
      })
  }
}

Step 5 – Create Upload.php File

Create upload.php file and update the following code into it:

<?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_tmp = $_FILES['file']['tmp_name'];
    $file_ext = strtolower(end(explode('.',$_FILES['file']['name'])));
    $file = $folderPath . uniqid() . '.'.$file_ext;
    move_uploaded_file($file_tmp, $file);
   
?>

Note that, the upload.php file code will help you to upload files on the server from the angular 13 apps.

Step 6 – Start Angular App And PHP Server

Execute the following commands on terminal to start the angular app and as well as php server:

ng serve

php -S localhost:8001

Conclusion

Angular 13 file upload; In this tutorial, You have learned how to upload files in angular 13 apps.

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