I have some code in my Item model (very loosely) like such:
def author_id=(xyz)
book = Book.find_by_author_id(xyz)
book.author_id = self.id
end
self.id doesn't seem to be set though, when creating a new record...Any ideas?
id is set to record only after it is saved to database. So you could add a simple callback here
after_create (or after_save - whatever you need) do |record|
book = Book.find_by_author_id(xyz)
book.update_attributes :author_id => record.id
end
if self
is a new_record?
(not persisted in the DB), you won't be able to assign id like this, since there's no id yet. However, it should be possible to set book.author
to self
.
If this is not your case, you should consider specifying your question a bit.
When you create a new record, no ID is set yet because the object is not in the database yet. You can test it with the instance method new_record?()
.
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