OrderValidator

OrderValidator

class OrderValidator < ActiveModel::Validator
  @@steps = {
    :step_one => [:spec, :tac, :establishment_id],
    :step_one_validate => [:spec_option]    
  }

  def validate(record)
    validates_for_presence(record) if !record.current_step.blank? && steps.include?(record.current_step.to_sym)
  end
  
  private
  def validates_for_presence record
    record.errors.add_on_blank validation_attributes(record.current_step.to_sym)
  end

  def validation_attributes current_step
    steps[0..steps.index(current_step)].inject([]){|m,o| m << @@steps[o]}.flatten
  end

  def steps
    Array(@@steps.keys)
  end
end