I have a question:
I have 2 tables
Table PROFILE has the following fields:
apitype enum(‘facebook’, ‘main’)
Table USER has the following fields:
I have a field USER_ID in a table PROFILE that either stores the user’s FACEBOOK ID or the user’s SITE ID (the ID that the user has on my website; this ID comes from the table USER).
If another field, "apitype" says "facebook" then the USER_ID field for that row in the PROFILE table stores the FACEBOOK ID of the user. If "apitype" says "main", then the USER_ID field for that row in the PROFILE table stores an ID taken from the USER table.
How do I represent this in the relations function in the model - so that the relation $profile->user depends on the table column USER_ID (from PROFILE) and refers to the row in the User table that is associated with that profile ID (with Users.ID = Profile.user_id) ONLY IF apitype says "main." If "apitype" does not say "main", then that relation does not hold.