migrations and models

app/Models/Invoice.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Invoice extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'booking_id',
+        'total_amount',
+        'status',
+        'issued_at',
+        'due_date',
+        'pdf_path',
+    ];
+
+    public function booking()
+    {
+        return $this->belongsTo(\App\Models\Booking::class);
+    }
+}