module Aws::Rails

def self.use_rails_encrypted_credentials
  # limit the config keys we merge to credentials only
  aws_credential_keys = %i[access_key_id secret_access_key session_token]
  Aws.config.merge!(
    ::Rails.application
      .try(:credentials)
      .try(:aws)
      .to_h.slice(*aws_credential_keys)
  )
end