nihonbuzz-academy/app/Models/UserProgress.php

<?php

namespace App\Models;

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

class UserProgress extends Model
{
    use HasUuids;

    protected $table = 'user_progress';

    protected $guarded = [];

    protected $casts = [
        'started_at' => 'datetime',
        'completed_at' => 'datetime',
        'last_heartbeat_at' => 'datetime',
        'metadata' => 'array',
    ];

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

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