/**
* @param $filters
* @return array Categories name with the number of referenced articles
*/
public function categories($filters)
{
return $this->filter(Article::init(), $filters)->get()->groupBy('category_id')->map(function ($item, $key) {
$category = Category::find($key);
return ['numberArticles' => $item->count(), 'name' => $category->name, 'slug' => $category->slug];
});
}
