How to check for 'not in' in if statements?

[Jura]

@bep

I have not tested this, but if takes one boolean as parameter, so the above needs to be written as:

{{ if (not in .Params.categories “Meta”) }}

Thanks Bep, for leading me to the right path. I moved the first parenthesis a one step to the right and it worked. The code is now:

{{ if isset .Params "categories" }}
    {{ if not (in .Params.categories "Meta") }}
        <!-- Hugo code here -->
    {{ end }}
{{ end }}