This patch implements parameter 'checked_in' on checkouts endpoint to
enable getting circulation history.
Test plan:
1) Apply the patch and restart plack
2) Use your favorite REST API tester and play with /checkouts endpoint:
- use it without checked_in parameter
- use checked_in=1 for getting returned checkouts
Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
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