user.rb

class User < ActiveRecord::Base

  define_index do
    set_property enable_star: true
    indexes :name
    indexes :phone
    indexes :address
  end

  def self.query(options)
    return unless options[:q]
    query = "@name (#{options[:q]}*) | @phone (#{options[:q]}*) | @address (#{options[:q]}*)"
    search(query, match_mode: :extended2)
  end
end