在Laravel 6中，如何根据父模型的属性查询模型？

public function childModels()
{
    return $this->hasMany(ChildModel::class, 'parent_id', 'id');
}

public function scopeFilterByParentAttribute($query, $attribute)
{
    return $query->whereHas('parentModel', function ($query) use ($attribute) {
        $query->where('attribute', $attribute);
    });
}

$filteredModels = ChildModel::filterByParentAttribute($attribute)->get();