Hi everyone, 

I dealing with a curly one in Odoo Online. In an Odoo base view "eCommerce: Multi-Menus" I have added an Inherited view to filter our certain Website categories and what is needed as below:

1. Only show where the category has names like "Toner" or "Ink" or Printers & Scanners", etc.
2. And also don't show any category if there is no "chiled_id" or "product_tmpl_ids" so empty categories where they are not a parent category will be also hidden

Here is my current code: 

<xpath expr="//t[@t-set='categories']" position="replace">
    <t t-set="categories" t-value="request.env['product.public.category'].search(
        [
            '&',
                '|',
                    ('child_id', '!=', False),
                    ('product_tmpl_ids', '!=', False),
                '|', '|', '|',
                    ('name', '=', 'Ink Cartridge'),
                    ('name', '=', 'Toner Laser Cartridge'),
                    ('name', '=', 'Printers By Brand'),
                    ('name', '=', 'Printers & Scanners')
        ]
    )[:20]"/>
</xpath>

But I am getting this error: 

Validation Error
Error while parsing or validating view:

xmlParseEntityRef: no name, line 4, column 15 (<string>, line 4)

I understand that all '&' need to be changed to '&' instead, and I do this I am able to save the view. But then it doesn't do what was intended (it show only categories that we want but yet not hiding the empty categories). 

Any thoughts is highly appreciated.

Re,

Victor