alrahma_sunday_school_api/app/Models/ExamDraft.php

<?php

namespace App\Models;

class ExamDraft extends BaseModel
{
    protected $table = 'exam_drafts';

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

    protected $fillable = ['teacher_id', 'class_section_id', 'semester', 'school_year', 'exam_type', 'draft_title', 'description', 'teacher_file', 'teacher_filename', 'status', 'admin_id', 'admin_comments', 'reviewed_at', 'final_file', 'final_filename', 'version', 'previous_draft_id', 'is_legacy', 'created_at', 'updated_at'];

    protected $casts = [
        'teacher_id' => 'integer',
        'class_section_id' => 'integer',
        'admin_id' => 'integer',
        'is_legacy' => 'boolean',

        'version' => 'integer',
        'previous_draft_id' => 'integer',

        'reviewed_at' => 'datetime',
    ];

    /**
     * legacy had updateOnlyChanged=false (force updates even if nothing changed).
     * In Laravel, you can force a save by calling:
     *   $model->touch();   // updates updated_at only
     *   or
     *   $model->save(['timestamps' => true]); // normal save
     *
     * If you want a helper:
     */
    public function forceSave(array $attributes = []): bool
    {
        if (! empty($attributes)) {
            $this->fill($attributes);
        }

        // Force updated_at refresh even if no attributes changed
        $this->updated_at = now();

        return $this->save();
    }

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

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

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

    public function previousDraft()
    {
        return $this->belongsTo(self::class, 'previous_draft_id');
    }
}