Hi there,
We need to update the Moodle registration process, so that upon the form submission, the code would take a postal code field, and use it to query a database to find the matching geographical district, and then write it to the user database.
I can do this in php, but am unclear as to where I would hook into the Moodle framework to do this with Moodle. Any pointers as to where I would look to do this?