alrahma_sunday_school_api/app/Models/InventoryMovement.php

<?php

namespace App\Models;

use App\Models\BaseModel;

class InventoryMovement extends BaseModel
{
    protected $table = 'inventory_movements';

    // ✅ CI: useTimestamps = true (created_at/updated_at)
    public $timestamps = true;

    protected $fillable = [
        'item_id',
        'qty_change',
        'movement_type',
        'reason',
        'note',
        'semester',
        'school_year',
        'performed_by',
        'teacher_id',
        'student_id',
        'class_section_id',
        'created_at',
        'updated_at',
    ];

    protected $casts = [
        'item_id'         => 'integer',
        'qty_change'      => 'integer',
        'performed_by'    => 'integer',
        'teacher_id'      => 'integer',
        'student_id'      => 'integer',
        'class_section_id'=> 'integer',
    ];

    /* Optional relationships */
    public function item()
    {
        return $this->belongsTo(InventoryItem::class, 'item_id');
    }

    public function performer()
    {
        return $this->belongsTo(User::class, 'performed_by');
    }

    public function teacher()
    {
        return $this->belongsTo(User::class, 'teacher_id');
    }

    public function student()
    {
        return $this->belongsTo(Student::class, 'student_id');
    }

    public function classSection()
    {
        return $this->belongsTo(ClassSection::class, 'class_section_id');
    }
}