I have programmed a solution in "RegisterController.php" to modify the registration of participants in a survey and check the ID (identity document, custom field added) against a server of my company before registration. (Function -> getRegisterErrors)
I would now like to improve the solution in order to update my limesurvey and not lose the data.
What is the most recommended solution? Create a custom plugin? Is there an updated turorial of this?
