When will ActiveRecord save associations?
I know that it will save associations when autosave: true as per https://api.rubyonrails.org/classes/ActiveRecord/AutosaveAssociation.html I know that it will save associations that are constructed like book = Book.new(name: 'foo') book.authors.build(name: 'bar') #has_many book.save or like book = Book.new(name: 'foo') book.build_author(name: 'bar') #has_one book.save I think associations are also
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