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Originally Posted by kcz
Wow, this is truly an excellent idea. I totally forgot about the command line interface.
In this case I can write a script in perl, bash or whatnot and run the script every time I modify a series.
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And some day if/when you have time, you could do it in python as a standalone calibre script (calibre-debug -e), using calibre's data layer. This would run *many* times faster because a) it would be one execution instead of one per book, b) it could check if anything had changed, and c) could update all the books in a series in one transaction. The program would do something like:
1) iterate through all the book ids in the db (there is a method for that), building a map of series -> desired number format and series -> existing number format.
2) iterate through the maps. If desired != existing:
2.1) use the db-level search method to get all ids for a series.
2.2) use the db-level update field multiple to set the custom column for all the books in the series to the "desired" value.
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Thank you so much. I guess I didn't see the forrest for the trees.
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You are welcome. It has been an interesting discussion.