activerecord/lib/active_record/connection_adapters/type/numeric.rb


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module ActiveRecord
  module ConnectionAdapters
    module Type
      module Numeric # :nodoc:
        def number?
          true
        end

        def type_cast_for_write(value)
          case value
          when true then 1
          when false then 0
          when ::String then value.presence
          else super
          end
        end
      end
    end
  end
end