Вот модель клиента

Client.rb

class Client < ActiveRecord::Base
  belongs_to :user
  has_many :call_center_touches
  has_many :support_touches
  has_many :sales_touches
  has_many :client_events
  has_many :events, through: :client_events

  def self.text_search(query)
    self.where("similarity(name, ?) > 0.2 OR similarity(iin, ?) > 0.2 OR similarity(email, ?) > 0.2 OR similarity(phone, ?) > 0.2" , query, query, query, query).order("similarity(name, #{ActiveRecord::Base.connection.quote(query)}) DESC")
  end
end