<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class TeachingArrangementStudent extends Model
{
    protected $fillable = [
        'teaching_arrangement_id',
        'student_teacher_subject_id',
    ];

    /**
     * The teaching arrangement (scheduled slot).
     */
    public function arrangement(): BelongsTo
    {
        return $this->belongsTo(TeachingArrangement::class, 'teaching_arrangement_id');
    }

    /**
     * The student–teacher–subject relationship linked to this slot.
     */
    public function studentTeacherSubject(): BelongsTo
    {
        return $this->belongsTo(StudentTeacherSubject::class, 'student_teacher_subject_id');
    }
}