help with custom column

[cheesegrater]

hi there! first time poster, long time lurker.
disclaimer! i'm not a programmer and actually I know nothing about it.

i'm having a problem with the creation of a new column in calibre.

basically this new custom column should search into the tags of the book files and see if a particular tag is present, if it is it should state yes in the column space.

i'm using this template:
program: test(select(field('Tags'),'[tag that I need]'),'Yes','No')
it is something I pasted from a site and I have no idea if it is correct or no

as for the column type I'm using "column built from other columns".

if someone could help me I would be very greatful. thank you in advance

[Comfy.n]

Originally Posted by cheesegrater

hi there! first time poster, long time lurker.
disclaimer! i'm not a programmer and actually I know nothing about it.

i'm having a problem with the creation of a new column in calibre.

basically this new custom column should search into the tags of the book files and see if a particular tag is present, if it is it should state yes in the column space.

i'm using this template:
program: test(select(field('Tags'),'[tag that I need]'),'Yes','No')
it is something I pasted from a site and I have no idea if it is correct or no

as for the column type I'm using "column built from other columns".

if someone could help me I would be very greatful. thank you in advance

try this:

program:
    str_in_list($tags, ',', 'your_tag_here', 'Yes', 'No')

That select function applies only to identifiers fields, AFAIK