Order Subcategories

[eloicolo]

Hello,

I have a prestashop 1.7.4 with the template TT_Tools,
I'm trying to sort the sub-categories of the side menu but I have not been successful.

I tried adding a class in the folder / override / modules / ps_mainmenu

class Ps_MainMenuOverride extends Ps_MainMenu implements WidgetInterface
{
    protected function generateCategoriesMenu ($ categories, $ is_children = 0)
    {
        $ categories = $ this-> sortCategories ($ categories);
        return parent :: generateCategoriesMenu ($ categories, $ is_children);
    }
    ...

But it does not work, 
Any suggestions?

[tdsoft]

1. You can NOT override any classes, controller of a module ( example /modules / ps_mainmenu)

Only override: ROOT/classes or ROOT/controllers

2. you can open that template and modify to add your source?