I too raised this requirement on the forum a few days back. (mine was just search by client role but to be able to search by custom attribute will be a bonus for me)

Mark wanted me to raise a Jira which I just did and referred to my forum topic link and this one. Please feel free to add further comments against the Jira case

https://issues.jboss.org/browse/KEYCLOAK-1902


On Tue, 6 Oct 2015 at 00:19 Bill Burke <bburke@redhat.com> wrote:
Can only search by name and email right now.  We need to make this a
priority.

On 10/5/2015 9:07 AM, Remi Cartier wrote:
> Hey there,'
>
> *Question 1:*
>
> I was wondering if there was an existing mechanism to fetch users that
> have some specific client roles.
>
> My scenario is this one. As a SSO provider, different applications
> (clients) are created in Keycloak.
> A specific user can have roles for some of those clients.
>
> If, in one of my application, I want to list all the users that
> ‘belongs’ to me (that have roles for my application) how do I do that ?
>
> I don’t want to list all the users and they filter them by some
> criteria, that would be a very inefficient way to do it. (CPU + Bandwidth)
>
> *Question 2: *
>
> In the search REST admin endpoint, is there a mechanism to filter on
> specific custom attributes ?
>
> for example. I created a language attribute for a user. I now want to
> list all my users with custom attribute language=FR for example, how do
> I do that ?
>
> Syntax could be :
> /search?attribute1=language&value1=FR or
> /search?attribute_language=FR
>
> Thank for your time and great work.
> Sorry if those questions have already been asked (if so, please,  simply
> point me to some reference without repeating yourself)
>
> Cheers !
>
> ------------------------------------------------------------------------
>
>
> REMI CARTIER
>
> B.O.S.S. (Business & Operation Support Systems) P.O (Product Owner)
>
> *IMETRIK GLOBAL INC.*
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>
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>
>
>
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--
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com
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