Ruby on Rails

So far, I don't get any results returned

user.rb:

searchkick  word_middle: ['full_name', 'description', 'interests']

 def full_name
  [first_name, last_name].join(' ')
 end
 
 def search_data
   {
   full_name: full_name,
   description: description,
   interests: interests
   }
 end

world_controller.rb

def search
  @terms=params[:terms]
  search = params[:terms].present? ? params[:terms] : nil
    @users = if search
       User.search(search)
    end
end