Inventory Management with Form Repeater in Laravel | Step-by-Step Tutorial

in this tutorils will explain how to make a Form Repeater in Laravel Step by step.

First Step Create the Laravel Project using following command

composer create-project laravel/laravel billsystem-app

after that you have to create the routes files in web.php file

<?php

use Illuminate\Support\Facades\Route;
use App\Http\Controllers\BillController;

Route::get('/', function () {
    return view('welcome');
});



Route::get('/bill', [BillController::class, 'index']);

After that create a controller

php artisan make:controller BillController

paste the following codes

class BillController extends Controller
{
    
    public function index()
    {
       
        return view('bills.index');
    }
}

return view(‘bills.index’); which is passing the to respective view page inside the views folder

index.blade.php

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">

<style>

.container {
  display: flex;
  justify-content: center;
  
}

</style>



</head>
<body

<div class="container">

 <div class="col-md-6" >

<h2>Bill Form</h2>
<form>
    
    <table class="table table-bordered" id="billTable">
        <thead>
            <tr>
                <th>Product Name</th>
                <th>Quantity</th>
                <th>Price</th>
                <th>Total</th>
                <th>Action</th>
            </tr>
        </thead>
        <tbody id="billRows">
            <tr>
                <td><input type="text" name="products[0][product_name]" class="form-control" required></td>
                <td><input type="number" name="products[0][quantity]" class="form-control quantity" required></td>
                <td><input type="number" name="products[0][price]" class="form-control price" required></td>
                <td><input type="number" class="form-control total" readonly></td>
                <td><button type="button" class="btn btn-danger removeRow">Remove</button></td>
            </tr>
        </tbody>
    </table>

    <button type="button" id="addRow" class="btn btn-primary" >Add Row</button>
    <hr>
    <div class="form-group">
        <label for="grandTotal"><b>Grand Total:</b></label>
        <input type="number" id="grandTotal" class="form-control" readonly>
    </div>
   
</form>
</div>
</div>
<script>
document.addEventListener('DOMContentLoaded', function() {
let rowIndex = 1;

// Add new row
document.getElementById('addRow').addEventListener('click', function() {
    let row = `<tr>
        <td><input type="text" name="products[${rowIndex}][name]" class="form-control" required></td>
        <td><input type="number" name="products[${rowIndex}][quantity]" class="form-control quantity" required></td>
        <td><input type="number" name="products[${rowIndex}][price]" class="form-control price" required></td>
        <td><input type="number" class="form-control total" readonly></td>
        <td><button type="button" class="btn btn-danger removeRow">Remove</button></td>
    </tr>`;
    document.getElementById('billRows').insertAdjacentHTML('beforeend', row);
    rowIndex++;
});

// Calculate total and grand total dynamically
document.addEventListener('input', function(event) {
    if (event.target.classList.contains('quantity') || event.target.classList.contains('price')) {
        let row = event.target.closest('tr');
        let quantity = row.querySelector('.quantity').value || 0;
        let price = row.querySelector('.price').value || 0;
        let total = quantity * price;
        row.querySelector('.total').value = total;

        calculateGrandTotal();
    }
});

// Remove row
document.addEventListener('click', function(event) {
    if (event.target.classList.contains('removeRow')) {
        event.target.closest('tr').remove();
        calculateGrandTotal();
    }
});

// Calculate grand total
function calculateGrandTotal() {
    let grandTotal = 0;
    document.querySelectorAll('.total').forEach(function(totalInput) {
        grandTotal += parseFloat(totalInput.value || 0);
    });
    document.getElementById('grandTotal').value = grandTotal;
}
});
</script>
</body>
</html>