type:== rails

encrypt_and_decrype

before_save :encrypt_note
  def encrypt_note
    salt  = SecureRandom.random_bytes(64)
    key   = encrypt_key || ActiveSupport::KeyGenerator.new(ENV["SECRET_KEY"]).generate_key(salt) 
    crypt = ActiveSupport::MessageEncryptor.new(key)
 
    %w(client_note food medicines hydration md_appointments activity mood positive_thinking positive_action listener_note).each_with_index do |att|
 
      val = if !new_record? and send("#{att}_changed?")
        read_attribute(att.to_sym)
      else
        send(att) || ""
      end 
      send("#{att}=", crypt.encrypt_and_sign(val))
    end 
 
    byebug
    self.encrypt_key = key 
  end 
 
  %w(client_note food medicines hydration md_appointments activity mood positive_thinking positive_action listener_note).each do |attr|
    define_method(attr) do  
      if is_encrypt?(attr)
        crypt = ActiveSupport::MessageEncryptor.new(encrypt_key)
        crypt.decrypt_and_verify(read_attribute(attr.to_sym))
      else
        read_attribute(attr.to_sym)
      end 
    end 
  end 
 
  def is_encrypt?(attr)
    if encrypt_key.present?
      crypt = ActiveSupport::MessageEncryptor.new(encrypt_key)
      crypt.decrypt_and_verify(read_attribute(attr.to_sym))
      return true
    else
      return false
    end
  rescue ActiveSupport::MessageVerifier::InvalidSignature
    false
  end