Display composite columns with comments in book details

chaley · 03-07-2023, 05:14 PM

Available in calibre source: You can now specify that the output of a composite column (column built from other columns) be displayed on the right-hand side in book details along with comments. Reason: the right side is usually wider, giving more room to display the column data. It is particularly useful if the template generates html containing complex text, tables, lists, and links.

The template must produce plain text or HTML.

The option is not available for "Columns built from other columns, behaves like tags".

ownedbycats · 03-07-2023, 06:37 PM

This would only affect narrow mode, correct? In wide mode, the comments are below other metadata:

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BetterRed · 03-07-2023, 08:06 PM

I recently noticed the term virtual column is used in the Calibre user manual :

Quote:

The calibre template language is … used throughout calibre…. Examples:

Define virtual columns that contain data from other columns.

IMO virtual is preferable to composite. Amongst other things one of the essay writing rules my seventh form English teacher drummed into my head (by throwing blackboard dusters at me) was:

Quote:

"Use not different words with the same meaning, nor attach different meanings to the same word, nor use many words when few would serve."

BR

ownedbycats · 03-07-2023, 08:52 PM

Composite is the name of the columntype in the db and I think in general it's a database term.

BetterRed · 03-08-2023, 12:44 AM

Indeed it is a database term, been around since Peter Chen developed ER modelling in the 1970s. BTW: Chen says he was inspired by Bachmann's work - Codd came later.

Historically, composite attribute (column) has had a very specific meaning - a grouping of simple columns (attributes) into an composite attribute, classic example is an address = house no + street + suburb + postcode; like a composite materai is a substance made up of various simple materials - e.g. concrete = cement + sand + gravel + water.

Wouldn't be surprised if it's been redefined since.

chaley · 03-08-2023, 04:01 AM

Quote:

Originally Posted by ownedbycats

This would only affect narrow mode, correct? In wide mode, the comments are below other metadata:

They go with the comments, wherever they are placed, with either no header or a header above. I do need to change the tooltip.

03-07-2023, 05:14 PM	#1
chaley Grand Sorcerer Posts: 12,447 Karma: 8012886 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	Display composite columns with comments in book details Available in calibre source: You can now specify that the output of a composite column (column built from other columns) be displayed on the right-hand side in book details along with comments. Reason: the right side is usually wider, giving more room to display the column data. It is particularly useful if the template generates html containing complex text, tables, lists, and links. The template must produce plain text or HTML. The option is not available for "Columns built from other columns, behaves like tags".

03-08-2023, 12:44 AM	#5
BetterRed null operator (he/him) Posts: 21,725 Karma: 29711016 Join Date: Mar 2012 Location: Sydney Australia Device: none	Indeed it is a database term, been around since Peter Chen developed ER modelling in the 1970s. BTW: Chen says he was inspired by Bachmann's work - Codd came later. Historically, composite attribute (column) has had a very specific meaning - a grouping of simple columns (attributes) into an composite attribute, classic example is an address = house no + street + suburb + postcode; like a composite materai is a substance made up of various simple materials - e.g. concrete = cement + sand + gravel + water. Wouldn't be surprised if it's been redefined since. Last edited by BetterRed; 03-08-2023 at 01:08 AM.

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03-07-2023, 06:37 PM	#2
ownedbycats Custom User Title Posts: 10,973 Karma: 75337983 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	This would only affect narrow mode, correct? In wide mode, the comments are below other metadata:

03-07-2023, 08:52 PM	#4
ownedbycats Custom User Title Posts: 10,973 Karma: 75337983 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Composite is the name of the columntype in the db and I think in general it's a database term.

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