Answers for "laravel eloquent has many through on many to many relationship"

laravel has one of many relationship

/**
 * Get the user's most recent order.
 */
public function latestOrder()
{
    return $this->hasOne(Order::class)->latestOfMany();
}

laravel has many through relationship

projects
    id - integer
    name - string

environments
    id - integer
    project_id - integer
    name - string

deployments
    id - integer
    environment_id - integer
    commit_hash - string