Fixes #21829: Add association_exists_validator (#5405)
This validator ensures that an associated model (fk relation) actuallyexists with the ID specified on this model. i.e. Hostgroup.realm_id
This PR is required for Katello to require a ContentFacet on a Host.
Fixes #21829: Add association_exists_validator (#5405)
This validator ensures that an associated model (fk relation) actually
exists with the ID specified on this model. i.e. Hostgroup.realm_id
This PR is required for Katello to require a ContentFacet on a Host.