Filter for a "IS_NULL" Field

[JackJones]

Currently it isn't possible in the Filter for filtering on a field with one have the values "NULL" and "1".

[webdevilopers]

Can you provide a code example? Have you tried doctrine_orm_callback?
http://sonata-project.org/bundles/doctrine-orm-admin/master/doc/reference/filter_field_definition.html#callback

Possibly related:
#2230

[webdevilopers]

No feedback. Possible solutions:

• https://gist.github.com/joergbasedow/5964815 by @joergbasedow
• Callback Filter #2513 (comment) by @bobman38

If we don't want to feature this filter type the issue should be closed @soullivaneuh .

[soullivaneuh]

@webdevilopers your links are workaround with callback method IMO.

I keep this issue open. Having a IS_NULL filter is not a bad idea and contributors are free to make PR about that. 👍

[webdevilopers]

👍

Here is my current attempt implementing the SonataCoreBundle type constants and translation domain:
https://gist.github.com/webdevilopers/c04abcff801c7837d25f

[jordisala1991]

Is there any change that this has been implemented in all those years?

sonata-project/SonataDoctrineORMAdminBundle#649
sonata-project/SonataDoctrineORMAdminBundle#650

WDYT @soullivaneuh , can this be closed or it is still relevant?

[core23]

This issue is very old. Feel free to reopen, if the error still exists.

A PR would be welcome if you reopen this issue.