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Old 07-06-2013, 06:42 PM   #152
speakingtohe
Wizard
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Posts: 4,812
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Join Date: Apr 2010
Device: sony PRS-T1 and T3, Kobo Mini and Aura HD, Tablet
Quote:
Originally Posted by AJvK View Post


I have a custom column set to "Column built from other columns" with the following template, thanks to PeterT:
Code:
{:'first_non_empty(field('Series'), field('authors'))'}
And the Extended driver set to use this column for shelves.
Works great, but I cannot figure out how this would allow to send books to the wrong shelf - I've rechecked the calibre library and all information for the offending book is correct.

I had a similar column (again thanks to PeterT) that worked like a charm for a while and then started going crazy. My column IIIRC was
{series:'ifempty($, ifempty(field('series'),'0 series'))'}
This gave me one shelf with all non series books called 0 series.
Then it stopped working reliably. I think it is something to do the custom column built from other columns code as I had different problems making collections on the Sony T1 using and expression that chaley did for me a year ago. Would work fine on the 300 and 650 but messed op the T1. And while PeterT's solution seems more elegant, I went to a simpler brute force way of doing it.

Helen
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