How to display search results using thinking sphinx

I have thinking sphinx setup with my search form, but it is returning all users instead of users with the data I searched.

In the users controller:

def index
@users = params[:query].blank? ? User.all :[:query])

user_index.rb (inside /indices):

ThinkingSphinx::Index.define :user, :with => :active_record do
  # fields
  indexes name, :as => :user, :sortable => true
  indexes [ethnicity, religion, about_me, sexuality, children, user_smoke, user_drink, age, gender]

# attributes
  has id, created_at, updated_at

I have nothing for thinking sphinx inside my User model, not sure if I need to go that route. Any help would be appreciated