Flowdock
method

calculate

Importance_0
v5.1.7 - Show latest stable - 0 notes - Class: NullRelation
calculate(operation, _column_name) public

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# File activerecord/lib/active_record/null_relation.rb, line 43
    def calculate(operation, _column_name)
      case operation
      when :count, :sum
        group_values.any? ? Hash.new : 0
      when :average, :minimum, :maximum
        group_values.any? ? Hash.new : nil
      end
    end
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