method
does_not_support_reverse?
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Class: ActiveRecord::QueryMethods
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does_not_support_reverse?(order)
private
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# File activerecord/lib/active_record/relation/query_methods.rb, line 1231 def does_not_support_reverse?(order) # Account for String subclasses like Arel::Nodes::SqlLiteral that # override methods like #count. order = String.new(order) unless order.instance_of?(String) # Uses SQL function with multiple arguments. (order.include?(",") && order.split(",").find { |section| section.count("(") != section.count(")") }) || # Uses "nulls first" like construction. /\bnulls\s+(?:first|last)\b/.match?(order) end