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Hi Dev,

Today, i would like to show you angular 11 file upload example. This article goes in detailed on file upload in angular 11 example. you will learn angular 11 httpclient upload file. This article goes in detailed on angular 11 file upload with web api.

In this example, i want to share with you how to file upload with form data in angular 11. we will see example of angular 11 reactive form file upload. we will use reactive form with file upload in angular 11 step by step. i also created api for store file in folder using php for angular 11 file upload.

Here, we will simple create reactive form using formGroup. input file onchange event we will add file to another formgroup element. then after click on submit button we will call web api for store that file to server.

I written step by step file uploading with angular 11 application, also created web services using php. so let's follow bellowing step and get preview like as bellow:

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 4 class, if you want to use bootstrap then you can follow this link: Install Bootstrap 4 in Angular 11

so let's put bellow code:

src/app/app.component.html

<h1>Angular 11 File Upload Tutorial 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.required">Name is required.</div>
            <div *ngIf="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.required">File is required.</div>
        </div>
    </div>
          
    <button class="btn btn-primary" 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 {
   myForm = new FormGroup({
    name: new FormControl('', [Validators.required, Validators.minLength(3)]),
    file: new FormControl('', [Validators.required]),
    fileSource: new FormControl('', [Validators.required])
  });
    
  constructor(private http: HttpClient) { }
      
  get f(){
    return this.myForm.controls;
  }
     
  onFileChange(event) {
  
    if (event.target.files.length > 0) {
      const file = event.target.files[0];
      this.myForm.patchValue({
        fileSource: file
      });
    }
  }
     
  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.');
      })
  }
}

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

Now we are ready to run both:

Run Angular App:

ng serve

Run PHP API:

php -S localhost:8001

Now you can run and check it.

I hope it can help you...