I would like to add an additional field to the original version of the register form. Currently there is: username, email, and password. For a project I am working on, I would like for the user to also include their zip code as a field, so I can use that data to create a feature for the website. I see that register form is in the file register.js but I would like to know what's the best way to approach adding a new field because I'm certain that there will also be backend changes through Django to accomplish this. Please let me know, thanks!