Register Guidelines E-Books Search Today's Posts Mark Forums Read

Go Back   MobileRead Forums > E-Book Software > Calibre > Library Management

Notices

Reply
 
Thread Tools Search this Thread
Old Today, 08:39 AM   #1
MJSousa
Junior Member
MJSousa began at the beginning.
 
Posts: 4
Karma: 10
Join Date: Apr 2014
Device: Ectaco JetBook Lite
Question Why did the Date Column change and is it going to change back?

Hi. It used to be that the date column reflected the date I added an ebook to Calibre, regardless of the existing opf file. This way when a friend lent me a book, my Date reflected when I added the book and not when she had.

I searched this forum to find out what was going on and I came across an old post from 2011 (link: http://www.mobileread.com/forums/sho...ook+entered%3F) that relates to this subject.

One of the responses from kovidgoyal was:
"Yes the original behavior was to update the date field from epub metadata and it was removed later."

In response to someone else's post, who said:
"My (often faulty) recollection was that originally the Calibre date field was the date the book was added, unless the the Calibre date was specified in the epub opf. This confused some people, who expected to always see the date the book was added, not some date stored in the opf, so it was changed to ignore that date on import? Then again, perhaps my recollection is wrong? This wouldn't be a change of date, but it might explain why you recall it as not always being the date the book was added?" - (Originally Posted by Starson17 View Post)

So my question is why was the date column changed back to the "original behavior" and is there a way to go around it? (I now have Calibre ver 2.28; 64-bit/Win8) THX

Last edited by MJSousa; Today at 08:42 AM.
MJSousa is offline   Reply With Quote
Old Today, 08:42 AM   #2
kovidgoyal
creator of calibre
kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.kovidgoyal ought to be getting tired of karma fortunes by now.
 
kovidgoyal's Avatar
 
Posts: 27,189
Karma: 5612109
Join Date: Oct 2006
Location: Mumbai, India
Device: Various
The date column always shows the date added, unless your are adding recursively and there is an OPF file along side the ebook files, that specifies a value for the calibre date added column. This is so that you can use save to disk as a backup.

This behavior has always been the case and is not going to change.
kovidgoyal is offline   Reply With Quote
 
Advertisement
Old Today, 08:46 AM   #3
MJSousa
Junior Member
MJSousa began at the beginning.
 
Posts: 4
Karma: 10
Join Date: Apr 2014
Device: Ectaco JetBook Lite
Thank you for the VERY quick reply. I guess I just never noticed this behavior before. Is there a way I can have a column that is only for the date added? Would that be considered a "custom column"? I would hate to get rid of the original opf file since then I would need to (re)download the metadata. Or am I wrong in what an opf file has?
MJSousa is offline   Reply With Quote
Old Today, 09:07 AM   #4
pdurrant
The Grand Mouse 高貴的老鼠
pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.pdurrant ought to be getting tired of karma fortunes by now.
 
pdurrant's Avatar
 
Posts: 36,722
Karma: 102956713
Join Date: Jul 2007
Location: Norfolk, England
Device: NOOK ST GlowLight
Quote:
Originally Posted by MJSousa View Post
Thank you for the VERY quick reply. I guess I just never noticed this behavior before. Is there a way I can have a column that is only for the date added? Would that be considered a "custom column"? I would hate to get rid of the original opf file since then I would need to (re)download the metadata. Or am I wrong in what an opf file has?
Adding files with an existing opf file should be a rare operation. I'd recommend doing a manual metadata change on the imported file after importing them.
pdurrant is offline   Reply With Quote
Old Today, 11:16 AM   #5
MJSousa
Junior Member
MJSousa began at the beginning.
 
Posts: 4
Karma: 10
Join Date: Apr 2014
Device: Ectaco JetBook Lite
Quote:
Originally Posted by pdurrant View Post
Adding files with an existing opf file should be a rare operation. I'd recommend doing a manual metadata change on the imported file after importing them.
My friends and I have been exchanging and lending books to each other since the mid-80's, long before ebooks came along. So once in a while, I have this problem. It's not so rare. Do you know how I can add a "added-book-date" column? Doing a manual metadata change is not only time consuming, but an extra step. Thank you.
MJSousa is offline   Reply With Quote
Old Today, 11:34 AM   #6
theducks
Grand Sorcerer
theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.theducks ought to be getting tired of karma fortunes by now.
 
theducks's Avatar
 
Posts: 16,309
Karma: 7648692
Join Date: Aug 2009
Location: (The original) Silicon Valley, USA
Device: Astak Pocket Pro, K4NT,Galaxy Tab 2
Quote:
Originally Posted by MJSousa View Post
My friends and I have been exchanging and lending books to each other since the mid-80's, long before ebooks came along. So once in a while, I have this problem. It's not so rare. Do you know how I can add a "added-book-date" column? Doing a manual metadata change is not only time consuming, but an extra step. Thank you.
Time consuming?
Extra Step: Yes

I used to exchange a bag of paperbacks with a coworker about once a month.
I cant imagine much of the process has changed, except the size of the bag is lots smaller (and the practice is usually prohibited by the terms of use)

Downloading metadata will NOT change the {date}, That is a Calibre-System/OPF supplied value.
OTOH Bulk Metadata Edit cut the time consuming extra step to 3 steps for a LOT (bulk) add.
1)Select all those books
2)tap E
3)Set the new value in DATE,
OK/Apply
theducks is online now   Reply With Quote
Old Today, 03:11 PM   #7
chaley
"chaley", not "charley"
chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.chaley ought to be getting tired of karma fortunes by now.
 
chaley's Avatar
 
Posts: 6,445
Karma: 1830596
Join Date: Jan 2010
Location: France
Device: Many android devices
Quote:
Originally Posted by MJSousa View Post
My friends and I have been exchanging and lending books to each other since the mid-80's, long before ebooks came along. So once in a while, I have this problem. It's not so rare. Do you know how I can add a "added-book-date" column? Doing a manual metadata change is not only time consuming, but an extra step. Thank you.
Add a custom column (Preferences / Add your own columns / the + icon) with type "Date". Name the column something like lookup name "#added_date" and column heading "Added Date".

Once you have the column you need to copy the date column to your new custom column. This is done with edit metadata (multiple) Select all your books, press E, choose Search/Replace, then fill out the form as shown in this screen capture. I suggest that you back up your library first. Once this is finished then you must manually maintain the new date.

Note: if your friends make a custom column with the same lookup name and you import a book from them that has an accompanying OPF then their date will overwrite yours.
chaley is offline   Reply With Quote
Reply

Tags
added, calibre, column, date, ebooks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Automatic change id (column id) morawcik Library Management 5 05-28-2013 04:50 PM
Download date change Lutos Recipes 1 02-08-2013 12:12 PM
How to change date and time AceVentura Amazon Kindle 8 12-31-2011 03:46 PM
anyway to change 2 column lrf to 1 column mobi? lapisjay Amazon Kindle 2 01-12-2011 10:20 PM
change the date format Valwit Sony Reader 0 04-14-2009 08:30 AM


All times are GMT -4. The time now is 03:51 PM.


MobileRead.com is a privately owned, operated and funded community.