I have categories and subcategories. Now I want to create a select tag with this data so a user can select either a category or a subcategory. What I tried first was to use grouped_collection_select and use the main categories as groups and list the subcategories inside. Visually, this is the goal. The problem with this is that I need to be able to select the main categories as well and not only the subcategories.
So, now I want to list them like this:Cat1 -- Subcat1 -- Subcat2 Cat2 -- Subcat...
How can I implement this? I’ve tried using the collection_select() method but I don’t get it right.
@menu_categories contains the main categories and the subcategories are in some_category.subcategories
Any help is very appreciated.