hi all,

I have a table "memberships". It has a field user_id, which I want to
use as a foreign key to the "users" table.

So, as far as I get it, in the membership model I have to write:
has_many :users

In the users model, I write:
belongs_to :membership

However(in case the above is correct), how do I ensure that if I delete
a user, the related entities in membership will be also deleted??

Thank you :)
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