<?php

namespace App\Models;

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

class TeacherSubject extends Model
{
    protected $fillable = ['teacher_id', 'subject_id', 'class_id', 'academic_year_id'];

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

    public function subject(): BelongsTo
    {
        return $this->belongsTo(Subject::class, 'subject_id');
    }

    public function class(): BelongsTo
    {
        return $this->belongsTo(ClassRoom::class, 'class_id');
    }

    public function attendances()
    {
        return $this->hasMany(Attendances::class);
    }

    public function academicYear() : BelongsTo
    {
        return $this->belongsTo(AcademicYear::class, 'academic_year_id');
    }
}