How to properly order the collection 'asc'-CodePudding

Im trying to order 'asc' the collection below but its not working with the sortBy collection method. Do you know how to properly achieve that?

 $topCategories  =  PostCategory::pluck('category_name', 'category_icon')->toArray();
        $topCategories =  collect($postInformation['categories']['data'])->map(function ($postCategory) {
            return
                $postCategory['name']['en'];
        })->sortBy('category_name')->toArray();

dd($topCategories) shows like:

^ array:12 [▼
  0 => "Testing category"
  1 => "category 2"
  ...
]

But the category 2 should appear first.

CodePudding user response：

You can order it in the actual query:

$topCategories  =  PostCategory::->orderBy('category_name', DESC")->pluck('category_name', 'category_icon')->toArray();

Which is the better way, because you want need to iterate over each entity in the collection, but still if you want you can use as a function on the collection:

sortByDesc("category_name")