validate_each

# File activemodel/lib/active_model/validations/numericality.rb, line 20
      def validate_each(record, attr_name, value)
        before_type_cast = :"#{attr_name}_before_type_cast"

        raw_value = record.send(before_type_cast) if record.respond_to?(before_type_cast) && record.send(before_type_cast) != value
        raw_value ||= value

        if record_attribute_changed_in_place?(record, attr_name)
          raw_value = value
        end

        return if options[:allow_nil] && raw_value.nil?

        unless is_number?(raw_value)
          record.errors.add(attr_name, :not_a_number, filtered_options(raw_value))
          return
        end

        if allow_only_integer?(record) && !is_integer?(raw_value)
          record.errors.add(attr_name, :not_an_integer, filtered_options(raw_value))
          return
        end

        unless raw_value.is_a?(Numeric)
          value = parse_raw_value_as_a_number(raw_value)
        end

        options.slice(*CHECKS.keys).each do |option, option_value|
          case option
          when :odd, :even
            unless value.to_i.send(CHECKS[option])
              record.errors.add(attr_name, option, filtered_options(value))
            end
          else
            case option_value
            when Proc
              option_value = option_value.call(record)
            when Symbol
              option_value = record.send(option_value)
            end

            unless value.send(CHECKS[option], option_value)
              record.errors.add(attr_name, option, filtered_options(value).merge!(count: option_value))
            end
          end
        end
      end