Hi!

I have a User model that has_and_belongs_to_many Awards.
The awards table is pre-populated, and there's an awards_users join
table.

In a rails console, If I do:
u = User.find(1)
u.awards.build(award_id: 1)

the award model that is built is an actual Award model, not an
AwardsUser model, like I would expect.
so, If i try to save the user model it violates the primary key index
because it is also trying to save a new Award, with the id 1.
I was expecting this to create a new row in the awards_users table
instead, with the user_id and award_id of 1.

Any ideas where I've gone wrong?

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