AuthController.js

const Encryption = use('Encryption');

class AuthController {

  //....
  
  async revokeUserToken ({auth, response}) {
    const user = await auth.getUser();
    const token = auth.getAuthHeader();
    await user
      .tokens()
      .where('type', 'api_token')
      .where('token', Encryption.decrypt(token))
      .update({ is_revoked: true });

    return response.status(204).json(null);
  }
}