gistfile1.rb

class UserService

  def self.register(params)
    user                       = User.new
    user.first_name            = params[:first_name]
    user.last_name             = params[:last_name]
    user.email                 = params[:email]
    user.password              = params[:password]
    user.password_confirmation = params[:password_confirmation]
    user.save
    user
  end

  def self.register!(params)
    user                       = User.new
    user.first_name            = params[:first_name]
    user.last_name             = params[:last_name]
    user.email                 = params[:email]
    user.password              = params[:password]
    user.password_confirmation = params[:password_confirmation]
    user.save!
    user
  end

end