Create Signature Pad & Save Using jQuery in Laravel 8

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Inside this article we will see a very interesting topic i.e How to create a signature pad & save using jquery in laravel 8. Signature Pad – HTML5 canvas based smooth signature drawing using variable width spline interpolation.

This tutorial will give you a idea to integrate a signature pad into your application and save signature generated image to server. For signature pad integration we will use jquery plugin and to save signature to server as an image we will use laravel 8 framwork.

Learn More –

Let’s get started.


Installation of Laravel Application

Laravel Installation can be done in two ways.

  • Laravel Installer
  • By using composer

Laravel Installer

To install Laravel via Laravel installer, we need to install it’s installer first. We need to make use of composer for that.

$ composer global require laravel/installer

This command will install laravel installer at system. This installation is at global scope, so you type command from any directory at terminal. To verify type the given command –

$ laravel

This command will open a command palette of Laravel Installer.

To create ad install laravel project in system,

$ laravel new blog

With the name of blog a laravel project will be created at your specified path.

By using composer

Alternatively, we can also install Laravel by Composer command create-project. If your system doesn’t has Composer Installed, Learn Composer Installation Steps. Here is the complete command to create a laravel project-

$ composer create-project --prefer-dist laravel/laravel blog

After following these steps we can install a Laravel application into system.

To start the development server of Laravel –

$ php artisan serve

This command outputs –

Starting Laravel development server: http://127.0.0.1:8000

Assuming laravel already installed at system.


Create Images Folder

Go to /public folder available at application root. Create a folder with name images. We will save generated signature images inside it.

Make sure images folder should have sufficient permission to write content into it.


Create Controller

Next, we need to create a controller file.

$ php artisan make:controller SignatureController

It will create a file SignatureController.php at /app/Http/Controllers folder.

Open SignatureController.php and write this complete code into it.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SignatureController extends Controller
{
    public function index()
    {
        return view('signature-pad');
    }
      
    public function store(Request $request)
    {
        $folderPath = public_path('images/');
        
        $image = explode(";base64,", $request->signed);
              
        $image_type = explode("image/", $image[0]);
           
        $image_type_png = $image_type[1];
           
        $image_base64 = base64_decode($image[1]);
           
        $file = $folderPath . uniqid() . '.'.$image_type_png;
      
        file_put_contents($file, $image_base64);
      
        return back()->with('success', 'Signature saved successfully !!');
    }
}

Create Blade Layout File

Go to /resources/views folder and create a file with name signature-pad.blade.php

Open signature-pad.blade.php and write this complete code into it.

<html>
<head>
    <title>Create Signature Pad Using jQuery in Laravel 8</title>
    
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.css">    
    
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.css"/>     
    
    <link rel="stylesheet" type="text/css" href="http://keith-wood.name/css/jquery.signature.css">
    
    <style>
        .kbw-signature { width: 100%; height: 200px;}
        #sig canvas{ width: 100% !important; height: auto;}
    </style>  
</head>
<body>
<div class="container">
   <div class="row">
       <div class="col-md-8 offset-md-3 mt-5">
           <div class="card">
               <div class="card-header">
                   <h5>Create Signature Pad Using jQuery in Laravel 8</h5>
               </div>
               <div class="card-body">
                    @if ($message = Session::get('success'))
                        <div class="alert alert-success  alert-dismissible">
                            <button type="button" class="close" data-dismiss="alert">×</button>  
                            <strong>{{ $message }}</strong>
                        </div>
                    @endif
                    <form method="POST" action="{{ route('signature_pad.store') }}">
                        @csrf
                        <div class="col-md-12">
                            <label class="" for="">Draw Signature:</label>
                            <br/>
                            <div id="sig"></div>
                            <br><br>
                            <button id="clear" class="btn btn-danger">Clear Signature</button>
                            <button class="btn btn-success">Save</button>
                            <textarea id="signature" name="signed" style="display: none"></textarea>
                        </div>
                    </form>
               </div>
           </div>
       </div>
   </div>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> 

<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.min.js"></script>

<script type="text/javascript" src="http://keith-wood.name/js/jquery.signature.js"></script>

<script type="text/javascript">
    var sig = $('#sig').signature({syncField: '#signature', syncFormat: 'PNG'});
    $('#clear').click(function(e) {
        e.preventDefault();
        sig.signature('clear');
        $("#signature").val('');
    });
</script>
</body>
</html>

Create Route

Open web.php from /routes folder and add these route into it.

# Add this to header
use App\Http\Controllers\SignatureController;

//...

Route::get('signature-pad', [SignatureController::class, 'index']);
Route::post('signature-pad', [SignatureController::class, 'store'])->name('signature_pad.store');

Application Testing

Open project to terminal and type the command to start development server

$ php artisan serve

URL: http://127.0.0.1:8000/signature-pad

When we hit Save button, it will save the signature image into images folder.

We hope this article helped you to learn Create Signature Pad & Save Using jQuery in Laravel 8 in a very detailed way.

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