Trying to identify a compute resource by name with the "compute_resource_name" helper throws the following error:

Started POST "/api/v2/hosts" for 127.0.0.1 at 2014-05-12 16:07:23 +0100
Processing by Api::V2::HostsController#create as JSON
  Parameters: {"name"=>"test4250", "hostgroup_name"=>"libvirt", "compute_resource_name"=>"localhost", "compute_profile_name"=>"libvirt", "apiv"=>"v2", "host"=>{"name"=>"test4250", "hostgroup_name"=>"libvirt", "compute_resource_name"=>"localhost", "compute_profile_name"=>"libvirt"}}
undefined method `find_by_to_label' for #<Class:0x007fba0fe099a0> (NoMethodError)
/home/dcleal/.rvm/gems/ruby-2.0.0-p247@foreman/gems/activerecord-3.2.18/lib/active_record/dynamic_matchers.rb:27:in `method_missing'
/home/dcleal/code/foreman/foreman/app/models/concerns/has_many_common.rb:83:in `block in belongs_to_name_for'
/home/dcleal/.rvm/gems/ruby-2.0.0-p247@foreman/gems/activerecord-3.2.18/lib/active_record/attribute_assignment.rb:85:in `block in assign_attributes'
/home/dcleal/.rvm/gems/ruby-2.0.0-p247@foreman/gems/activerecord-3.2.18/lib/active_record/attribute_assignment.rb:78:in `each'
/home/dcleal/.rvm/gems/ruby-2.0.0-p247@foreman/gems/activerecord-3.2.18/lib/active_record/attribute_assignment.rb:78:in `assign_attributes'
/home/dcleal/.rvm/gems/ruby-2.0.0-p247@foreman/gems/activerecord-3.2.18/lib/active_record/base.rb:498:in `initialize'
/home/dcleal/.rvm/gems/ruby-2.0.0-p247@foreman/gems/actionpack-3.2.18/lib/action_dispatch/routing/url_for.rb:103:in `initialize'
/home/dcleal/code/foreman/foreman/app/models/concerns/foreman/sti.rb:22:in `new'
/home/dcleal/code/foreman/foreman/app/models/concerns/foreman/sti.rb:22:in `new_with_cast'
/home/dcleal/code/foreman/foreman/app/models/host.rb:16:in `method_missing'
/home/dcleal/code/foreman/foreman/app/controllers/api/v2/hosts_controller.rb:70:in `create'