ruby on rails - Includes with only certain attributes -


is there way like:

book.includes(authors: {only: :first_name})

i want attribute, not whole author model.

nope, can't. if don't want load data can load books , run separate query on authors bring names alone:

books = book.where(something_here) author_ids = books.map(&:author_id) author_names = author.where(id: author_ids).pluck(:id, :first_name)

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