Initial commit

app/Models/InvoiceItem.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class InvoiceItem extends Model
+{
+    protected $fillable = [
+        'invoice_id',
+        'attendance_id',
+        'description',
+        'quantity',
+        'unit_price',
+        'amount',
+    ];
+
+    /**
+     * The invoice this line item belongs to.
+     */
+    public function invoice(): BelongsTo
+    {
+        return $this->belongsTo(Invoice::class);
+    }
+
+    /**
+     * The attendance record this line item is based on.
+     */
+    public function attendance(): BelongsTo
+    {
+        return $this->belongsTo(LessonAttendance::class, 'attendance_id');
+    }
+}