Let Rails Admin play nicely with Lockbox

[bo-oz]

I have a strange issue. I'm using Lockbox to encrypt my database values for the user model. Lockbox stores the field as {field_name}_ciphertext. Besides encrypting the data, lockbox also provides instance methods with the original {field_name}. I'd expect Rails Admin to be able to display the field, by calling the instance method, but somehow this doesn't work.

# suppose my field is name, this doesn't work

rails_admin do
  list do
    fields :name
  end
end

If I manually create an instance method, that is basically an alias for the instance method Lockbox creates, it does work:

def name_decode
  name
end

rails_admin do
  list do
    fields :name_decode
  end
end

Any ideas how I could let Rails Admin call the correct method on the instance?

[bo-oz]

What is strange is, when I look at another model, that is related to the User model (that has the name_cipertext encryption), that User model's name is de decyphered value for name. So in relationships it works, but when showing the original record, it doesn't.

[incubus]

Hi! Have you found any solution?

[incubus]

Well, here is my solution with app/models/concerns/entity/encryptable.rb:

module Entity
  module Encryptable
    def safe_send(value)
      if self.class.lockbox_attributes.key?(value)
        send(value)
      else
        super
      end
    end
  end
end

class User < ApplicationRecord
  include Entity::Encryptable
  encrypts :email, :name
end