make_left_outer_joins

# File activerecord/lib/active_record/associations/join_dependency.rb, line 184
      def make_left_outer_joins(parent, child)
        tables    = child.tables
        join_type = Arel::Nodes::OuterJoin
        info      = make_constraints parent, child, tables, join_type

        [info] + child.children.flat_map { |c| make_left_outer_joins(child, c) }
      end