method
preloaders_for_hash
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Class: Preloader
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preloaders_for_hash(association, records, scope, polymorphic_parent)
private
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# File activerecord/lib/active_record/associations/preloader.rb, line 116 def preloaders_for_hash(association, records, scope, polymorphic_parent) association.flat_map { |parent, child| grouped_records(parent, records, polymorphic_parent).flat_map do |reflection, reflection_records| loaders = preloaders_for_reflection(reflection, reflection_records, scope) recs = loaders.flat_map(&:preloaded_records).uniq child_polymorphic_parent = reflection && reflection.options[:polymorphic] loaders.concat Array.wrap(child).flat_map { |assoc| preloaders_on assoc, recs, scope, child_polymorphic_parent } loaders end } end