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docs/architecture/decisions/0010-user-models.md

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+# 10. Use custom User model with separate UserProfile
+
+Date: 2022-09-26
+
+## Status
+
+Proposed
+
+## Context
+
+Django strongly recommends that a new project use a custom User model in their
+first migration
+<https://docs.djangoproject.com/en/4.1/topics/auth/customizing/#using-a-custom-user-model-when-starting-a-project>.
+This allows for future customization which would not be possible at a later
+date if it isn’t done first.
+
+In order to separate authentication concerns from various user-related details
+we might want to store, we want to decide how and where to store that
+additional information.
+
+## Decision
+
+We use a custom user model derived from Django’s django.contrib.auth.User as
+recommended along with a one-to-one related UserProfile model where we can
+separately store any particular information about a user that we want to. That
+includes contact information and the name that a person wants to use in the
+application.
+
+Because the UserProfile is a place to store additional information about a
+particular user, we mark each row in the UserProfile table to “cascade” deletes
+so that when a single user is deleted, the matching UserProfile will also be
+deleted.
+
+## Consequences
+
+If a user in our application is deleted (we don’t know at this point how or
+when that might happen) then their profile would disappear. That means if the
+same person returns to the application and makes a new account, there will be
+no way to get back their UserProfile information and they will have to re-enter
+it.