MobileRead Forums - View Single Post - Using OnDevice to set the value of a custom column

WendyR14 · 10-23-2011, 03:47 PM

I wonder if anyone could give me some help. I've just begun to explore customising Calibre and I'm finding it tricky; I spotted a throw away comment in a thread (sorry can't find it now) where the poster said breezily that they used a custom column to record which books are loaded onto their Kindle so that they know what's what even when the device isn't connected.

Just what I want I thought.

I found this post https://www.mobileread.com/forums/sho...03&postcount=6 and that of course work well to do it manually. But I feel sure that I should be able to set it automatically using the ondevice() funtion explained in the user manual and mentioned here https://www.mobileread.com/forums/sho...6&postcount=15

I guess I need a composite column but does it need to behave like a tag or not; or does it not matter? I presume I need to put the expression into the template box - but what exactly do I need to type into there?

Ideally I should like my new column to be updated when I connect my device so that if I delete things from the kindle itself the value of the column reflects that, and of course the value needs to persist after I unplug the device.

10-23-2011, 03:47 PM	#1
WendyR14 Junior Member Posts: 8 Karma: 10 Join Date: Jan 2011 Device: kindle; ipad; netbook	Using OnDevice to set the value of a custom column I wonder if anyone could give me some help. I've just begun to explore customising Calibre and I'm finding it tricky; I spotted a throw away comment in a thread (sorry can't find it now) where the poster said breezily that they used a custom column to record which books are loaded onto their Kindle so that they know what's what even when the device isn't connected. Just what I want I thought. I found this post https://www.mobileread.com/forums/sho...03&postcount=6 and that of course work well to do it manually. But I feel sure that I should be able to set it automatically using the ondevice() funtion explained in the user manual and mentioned here https://www.mobileread.com/forums/sho...6&postcount=15 I guess I need a composite column but does it need to behave like a tag or not; or does it not matter? I presume I need to put the expression into the template box - but what exactly do I need to type into there? Ideally I should like my new column to be updated when I connect my device so that if I delete things from the kindle itself the value of the column reflects that, and of course the value needs to persist after I unplug the device.