Searching a host by a parameter that is connected to it's domain results in the following error:

PG::Error: ERROR: column hosts.domain_id does not exist LINE 1: ...WHERE "hosts"."type" IN ('Host::Managed') AND ((( hosts.doma... ^ : SELECT "hosts".* FROM "hosts" WHERE "hosts"."type" IN ('Host::Managed') AND ((( hosts.domain_id = 1 ))) ORDER BY "hosts"."name" ASC LIMIT 20 OFFSET 0

This is a result of trying to add a condition on hosts.domain_id: https://github.com/theforeman/foreman/blob/develop/app/models/concerns/hostext/search.rb#L212

domain_id is delegated to primary_interface but since search_by_params constructs a sql condition directly that doesn't help.
The condition in search_by_params needs to add the join to get the domain_id.