Hello Devs,
In this tutorial, we are going to see example of image upload in angular 10 with web api.
In this example you can understand a concept of angular 10 image upload example.
Follow this step by step guide given below:
Create New App
ng new my-new-app
Import Module
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 { }
Updated View File
src/app/app.component.html
<h1>Angular 10 Image Upload with Preview - Rathorji.in</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>
<img [src]="imageSrc" *ngIf="imageSrc" style="height: 300px; width:500px">
<button class="btn btn-primary" type="submit">Submit</button>
</form>
Use Component ts File
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 {
imageSrc: string;
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) {
const reader = new FileReader();
if(event.target.files && event.target.files.length) {
const [file] = event.target.files;
reader.readAsDataURL(file);
reader.onload = () => {
this.imageSrc = reader.result as string;
this.myForm.patchValue({
fileSource: reader.result
});
};
}
}
submit(){
console.log(this.myForm.value);
this.http.post('http://localhost:8001/upload.php', this.myForm.value)
.subscribe(res => {
console.log(res);
alert('Uploaded Successfully.');
})
}
}
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/";
$postdata = file_get_contents("php://input");
$request = json_decode($postdata);
$image_parts = explode(";base64,", $request->fileSource);
$image_type_aux = explode("image/", $image_parts[0]);
$image_type = $image_type_aux[1];
$image_base64 = base64_decode($image_parts[1]);
$file = $folderPath . uniqid() . '.png';
file_put_contents($file, $image_base64);
?>
Run this command:
ng serve
php -S localhost:8001
I hope this example helps you.