method
records_by_reflection
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Class: Preloader
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records_by_reflection(association)
private
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# File activerecord/lib/active_record/associations/preloader.rb, line 142 def records_by_reflection(association) records.group_by do |record| record_class = record.class reflection = record_class.reflections[association] unless reflection raise ActiveRecord::ConfigurationError, "Association named '#{association}' was not found on #{record_class.name}; " "perhaps you misspelled it?" end reflection end end