Possible bug in 7.4 Tag Editor error

FizzyWater · 06-20-2010, 01:47 AM

After I changed a tag in my book, when I clicked on the Tag Editor button to add a second description, I got the error message:

ERROR: Cannot use tag editor: The tags editor cannot be used if you have modified the tags

I had to delete the first tag I'd entered to get back into the tag editor to add the two I actually wanted assigned to the book.

(Using calibre 7.4 on Windows XP).

I hope this isn't a duplicate posting.

chaley · 06-20-2010, 03:58 AM

This isn't a bug, but is instead a design limitation.

When you change tags in the metadata editor, the changes are not 'real' until you press OK. By 'real' I mean they are not stored in the database. This scheme permits Cancel to back out all the changes without unintended side effects.

The tags editor reads the tags from the database. Because the changes aren't there yet, it will display incorrect information and throw away the changes you already made. This behavior is seen as suboptimal, so it is prevented.

Workarounds: use the tag editor before manually changing tags, or commit your changes with OK and reedit the metadata.

FizzyWater · 06-20-2010, 05:02 AM

I don't remember it working this way before. Was this a design change?

chaley · 06-20-2010, 06:11 AM

Not a design change, but a bug fix. It used to silently through away any changes made to tags before using the tag editor. See bug #5809 (http://bugs.calibre-ebook.com/ticket/5809)

06-20-2010, 01:47 AM	#1
FizzyWater You kids get off my lawn! Posts: 4,220 Karma: 73492664 Join Date: Aug 2007 Location: Columbus, Ohio Device: Oasis 2 and Libra H2O and half a dozen older models I can't let go of	Possible bug in 7.4 Tag Editor error After I changed a tag in my book, when I clicked on the Tag Editor button to add a second description, I got the error message: ERROR: Cannot use tag editor: The tags editor cannot be used if you have modified the tags I had to delete the first tag I'd entered to get back into the tag editor to add the two I actually wanted assigned to the book. (Using calibre 7.4 on Windows XP). I hope this isn't a duplicate posting.

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06-20-2010, 03:58 AM	#2
chaley Grand Sorcerer Posts: 11,728 Karma: 6690881 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	This isn't a bug, but is instead a design limitation. When you change tags in the metadata editor, the changes are not 'real' until you press OK. By 'real' I mean they are not stored in the database. This scheme permits Cancel to back out all the changes without unintended side effects. The tags editor reads the tags from the database. Because the changes aren't there yet, it will display incorrect information and throw away the changes you already made. This behavior is seen as suboptimal, so it is prevented. Workarounds: use the tag editor before manually changing tags, or commit your changes with OK and reedit the metadata.

06-20-2010, 05:02 AM	#3
FizzyWater You kids get off my lawn! Posts: 4,220 Karma: 73492664 Join Date: Aug 2007 Location: Columbus, Ohio Device: Oasis 2 and Libra H2O and half a dozen older models I can't let go of	I don't remember it working this way before. Was this a design change?

06-20-2010, 06:11 AM	#4
chaley Grand Sorcerer Posts: 11,728 Karma: 6690881 Join Date: Jan 2010 Location: Notts, England Device: Kobo Libra 2	Not a design change, but a bug fix. It used to silently through away any changes made to tags before using the tag editor. See bug #5809 (http://bugs.calibre-ebook.com/ticket/5809)

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