validates_presence_of :user_id only tests that there is a value for
user_id


with this method, user_id could be any integer, not necessarily a
valid user.

validates_presence_of :user will also check that the user is a valid
record on the database.

That clear it up?


> so if the user id is nil, then there is no error?
> --
> Posted viahttp://www.ruby-forum.com/.
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