Larry Kluger wrote:
If I eagerly load a collection during the initial find, do scoped find_by_ calls later _always_ use sql?
Yes.
What is the best pattern to use to not do another db trip? Is there some specialized rails method to handle this case?
eg Author has_many :books
larry = Author.find_by_name('larry', :include => :books)
ruby = larry.books.find_by_title('Ruby') # does this ALWAYS do a db call?
# Is the following the best way to get the one (or nil) book? temp = larry.books.select{|book| book.title == 'ruby'} ruby = temp.size == 1 ? temp[0] : nil
Yes. Or ruby = larry.books.detect {|book| book.title == 'ruby'}