Quote:
Originally Posted by isarl
. . .
it also seems like you want to pre-define values for your Genre hierarchy without first having to apply these values to individual books.
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In other words a "Controlled Vocabulary (CV)" See
Getty and
Wikipedia
Calibre has no direct way of implementing CVs, if the column in question has a limited set of values you could create an empty book as a placeholder, and add all the possible values to it.
If you edit the column in question (e.g. Genre) from the book list then you can press Shift+F2 on a book's Genre cell and the
Manage items: Genre dialogue will pop, this allows values to be assigned from the current list, and the addition of new values.
Quote:
Originally Posted by isarl
The Entities Manager plugin might be what you are seeking, which allows you to manage a value for a particular column independently of any book records, although I don't use it myself so can't speak from firsthand experience.
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IIRC Entities Manager sprang from my wish to have a place to store extra data about entities such as Publisher, Series, Tags etc. DaltonST went to considerable effort to satisfy my wishes as can be seen in the EM plugin thread. But the complexity of me using it outweighed the advantages it offered to me… so I abandoned my use of the plugin.
BR