nihonbuzz-academy/app/Models/Module.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Concerns\HasUuids;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Module extends Model
{
    use HasFactory, HasUuids, SoftDeletes;

    protected $guarded = [];

    protected $casts = [
        'metadata' => 'array',
        'is_free_preview' => 'boolean',
    ];

    public function course(): BelongsTo
    {
        return $this->belongsTo(Course::class);
    }

    public function lessons(): HasMany
    {
        return $this->hasMany(Lesson::class)->orderBy('order_index');
    }
}