Description of problem:
--------------------------
The UI blows up while trying to set a filter as the default filter with this error.

Error text:
undefined local variable or method `user' for #<StorageController:0x0000000b0ce2d8> [storage/save_default_search]

Snippet from production.log:
[----] I, [2015-10-30T18:21:56.345359 #2865:80d98c]  INFO -- : Started POST "/host/save_default_search/26" for 127.0.0.1 at 2015-10-30 18:21:56 -0400
[----] I, [2015-10-30T18:21:56.346609 #2865:80d98c]  INFO -- : Processing by HostController#save_default_search as JS
[----] I, [2015-10-30T18:21:56.346678 #2865:80d98c]  INFO -- :   Parameters: {"id"=>"26"}
[----] F, [2015-10-30T18:21:56.751354 #2865:80d98c] FATAL -- : Error caught: [NameError] undefined local variable or method `user' for #<HostController:0x00000016632fe8>
/var/www/miq/vmdb/app/controllers/application_controller/filter.rb:927:in `save_default_search'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/abstract_controller/base.rb:198:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/rendering.rb:10:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/abstract_controller/callbacks.rb:20:in `block in process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:117:in `call'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:117:in `call'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:505:in `call'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:505:in `call'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:92:in `__run_callbacks__'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:778:in `_run_process_action_callbacks'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/callbacks.rb:81:in `run_callbacks'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/abstract_controller/callbacks.rb:19:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/rescue.rb:29:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/notifications.rb:164:in `block in instrument'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activesupport/lib/active_support/notifications.rb:164:in `instrument'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/instrumentation.rb:30:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/activerecord/lib/active_record/railties/controller_runtime.rb:18:in `process_action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/abstract_controller/base.rb:137:in `process'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionview/lib/action_view/rendering.rb:30:in `process'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal.rb:196:in `dispatch'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_controller/metal.rb:237:in `block in action'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_dispatch/routing/route_set.rb:76:in `call'
/opt/rh/cfme-gemset/bundler/gems/rails-e2fcb2b4aec6/actionpack/lib/action_dispatch/routing/route_set.rb:76:in `dispatch'



Version-Release number of selected component (if applicable):
-----------------------
5.5.0.8


How reproducible:
-----------------
Always


Steps to Reproduce:
-------------------
1.Navigate to the Infrastructure->Datastores.
2.Try to set a filter as the default filter.


Actual results:
--------------
Error occurs


Expected results:
-----------------
No errors 


Additional info:
----------------