---- Reported by gmcharlt@gmail.com 2010-02-12 14:16:23 ----

Currently, the batch item modification tool will allow you to set item fields to a positive value (e.g., to change a location), but will not allow you to clear or blank a field.  For example, it cannot be used to change a group of items from lost to not lost.

The desired behavior is to be able to do all of the following:

[1] explicitly set a field to a known value (does this now)
[2] explicitly clear or blank out a field (new behavior)
[3] ... while not accidentally blanking out fields that are not meant to be changed.



---- Additional Comments From paul.poulain@biblibre.com 2010-02-12 14:30:47 ----

in phpmyadmin, there is a checkbox "SET NULL" to make the difference between '' and NULL
I think we could/should use this as well :

callnumber : ____________________v [ ] empty
Where [ ] can be checked only if the left list is on "nothing" (______) entry. And is not checked by default

Other option :
use a [ ] keep-as-it-is checkbox (_____v) meaning "empty"



---- Additional Comments From gmcharlt@gmail.com 2010-02-12 15:34:59 ----

(In reply to comment #1)
> in phpmyadmin, there is a checkbox "SET NULL" to make the difference between ''
> and NULL
> I think we could/should use this as well :
> 
> callnumber : ____________________v [ ] empty
> Where [ ] can be checked only if the left list is on "nothing" (______) entry.
> And is not checked by default

Agreed.

> Other option :
> use a [ ] keep-as-it-is checkbox (_____v) meaning "empty"

I prefer the former - the default setting should be to make no change. 




---- Additional Comments From nengard@gmail.com 2010-02-12 16:12:00 ----

This is related to: Bug - 3916 -- they don't depend on each other so I didn't put it in that field.



--- Bug imported by chris@bigballofwax.co.nz 2010-05-21 01:23 UTC  ---

This bug was previously known as _bug_ 4172 at http://bugs.koha.org/cgi-bin/bugzilla3/show_bug.cgi?id=4172

Actual time not defined. Setting to 0.0