The common creator methods can be written in base creator which can be again overridden by other creators. An example of using creator is also given. To know more about Creator follow (https://github.com/datt/Creators)

base_creator.rb

class BaseCreator < Creators::Base

EXTRA_PARAMS = [:action, :controller, :format,:utf8,:authenticity_token]

  def initialize(raw_params, model)
    super(raw_params,model)
  end

  def refine_params
    @params.deep_symbolize_keys.delete_if{|k,v| EXTRA_PARAMS.include? k }
  end

  private
   
  #define: This will remove extra spaces from params.
  #TODO: Remove password and other sensible fields.
  def strip_params params
    case params
      when Array
        params.map { |v| strip_params(v) }
      when Hash
        Hash[params.map { |k, v| [k, strip_params(v)] }]
      when String
        params.strip!
    end
  end

  #define: This method will convert truth values(1,0,"t","f") into boolean values.
  def convert_params params
    bool_params = convert_to_bool params
    params.replace(bool_params) if params.is_a?(Hash)
    params
  end

  def convert_to_bool params
    case params
      when Array
        params.map { |v| convert_to_bool(v) }
      when Hash
        Hash[params.map { |k, v| [k, convert_to_bool(v)] }]
      when String
        to_bool(params)
    end
  end

  def to_bool val
    return true if ['true', 'yes', 'on', 't'].include? val
    return false if ['false', 'no', 'off', 'f'].include? val
    return val
  end
end

profile_creator.rb

class ProfileCreator < BaseCreator
  def initialize(raw_params,profile)
    super(raw_params, profile)
  end

  def refine_params # optional
    super
    strip_params(@params)
    convert_params(@params['profile']['settings'])
  end
end

profiles_controller.rb

class ProfilesController < ApplicationController
  before_filter :new_user_profile, :only=>[:new, :create]

  def new
  end

  def create
    #params {"utf8"=>"✓", "authenticity_token"=>"PV3s45++WCzqw6pTAikXC6NINcERtcxzBdY+CI3lXfc=", "profile"=>{"first_name"=>"fname ", "last_name"=>"last name   ", "address1"=>" Address1 ", "address2"=>"Address 2", "city"=>"Pune", "state"=>"7", "zip"=>"411067", "phone_number"=>"1234567890","settings"=> {"private"=>"true","visible"=>"0"}}, "commit"=>"Next"}
    ProfileCreator.new(params,@profile).save    
  end


  private
  def new_user_profile
    @profile = current_user.build_profile
  end
end