Collection order

[bump]

Hi,

joined today and already have a question.
I use a couple of custom columns to manage the collections of my readers.
The collections should be in a specific order (currently read books, then series, then tags etc). For fields with only one value, eg series I copy the field and add a number at the beginning, like {series:|1. |}.

My only problem is that this don't work with tags, as there are multiple comma separated values in it. I guess I have to use subitems or sublist, but how can I add a text in front of each value?

Any hint is really appreciated

[chaley]

If the same prefix is put on each tag then you can do it with list_re.

If the prefix must change according to the value of the tag, then things are much more interesting. It can be done in general program mode with a sequence of list_re, one for each value to change, but this will have bad performance. If you know some programming and python, then the best approach would be a custom formatter function, because you can loop over the values and generate whatever result you want.

[bump]

Hi chaleay,

many thanks. All tags will have the same prefix, so I guess list_re will work.
Unfortunately I do not have any programming experience any my try failed.
Could you please give me a hint on how to use it in a custom column?

Cheers,

[bump]

Nevermind, I found my error.
If anyone wants to achive the same, this is what I did:

program:list_re(field('tags'), ',', '^', 'prefix')

Thanks again to point me in the right direction.

[chaley]

@bump: you could also do the job in template program mode with

{tags:'list_re($,  ',',  '^', 'prefix')'}

There are some situations where this could work better, such as when your want to use more than one template expression in the column.

[bump]

Thats awesome, thanks chaley