Need help with 'Has Cover' custom column

[Vortex]

I have the 'Has Cover' custom column in my libraries but the original library structure came from someone else so I dont know how it's supposed to work. It doesn't change to 'Yes' when a cover is added to a book and the column entries contains a mixture of blanks, some Yes's and a lot of random single words. This is what's in the column properties, can anyone help me out with this?
Thanks.

[chaley]

That column should show Yes if a book has both a series and a cover, blank otherwise. That is what it does in my test library, assuming I have transcribed the template correctly.

{series:'contains($, '.', has_cover (), $)'}

[Vortex]

I didn't realize there's a separate template for each library. When I checked each library the offending ones had title instead of series at the beginning:

{title:'contains($, ' ', has_cover (), $)'}

Working perfect now. Why is it dependent on there being something in the Series column?

[chaley]

Originally Posted by Vortex

I didn't realize there's a separate template for each library. When I checked each library the offending ones had title instead of series at the beginning:

{title:'contains($, ' ', has_cover (), $)'}

Working perfect now. Why is it dependent on there being something in the Series column?

The template in the first post references series. The template you just posted references title. The first uses a regular expression asking if there is a character in series. The second uses a regular expression asking if there is a space in the title. If there is then the template displays Yes if it has a cover or nothing if it doesn't. If the title contains no spaces then the column displays the title.

If you are asking why the first template checks for a series before checking has_cover(), I have no idea. Nor do I understand what the "title" template is intended to accomplish.

[BetterRed]

Originally Posted by Vortex

I didn't realize there's a separate template for each library. When I checked each library the offending ones had title instead of series at the beginning:

One reason to have separate physical libraries is to have different custom columns, or the same custom columns with different templates

Why is it dependent on there being something in the Series column?

You'd need to ask the designer of the custom column that question - readers of unknown minds are in short supply 'round here

BR

[BookJunkieLI]

Originally Posted by chaley

The template in the first post references series. The template you just posted references title. The first uses a regular expression asking if there is a character in series. The second uses a regular expression asking if there is a space in the title. If there is then the template displays Yes if it has a cover or nothing if it doesn't. If the title contains no spaces then the column displays the title.

If you are asking why the first template checks for a series before checking has_cover(), I have no idea. Nor do I understand what the "title" template is intended to accomplish.

For the title template, I found that if you replace the ' ' with a '.' it will return either a Yes or a blank space. I couldn't find an instance of it returning the title itself using that variation.

[chaley]

Originally Posted by BookJunkieLI

For the title template, I found that if you replace the ' ' with a '.' it will return either a Yes or a blank space. I couldn't find an instance of it returning the title itself using that variation.

Given that the title cannot ever be empty, contains() will always be true therefore has_cover() will always be called. You could replace the template with the following:

{:'has_cover()'}

or

program: has_cover()

[Vortex]

I presumed there must be a good technical reason why the template was dependent on there being a Series to function, but I guess not as this works perfectly without anything in the Series column.

{:'has_cover()'}

Thank you Chaley