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


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module ActiveRecord
  module ConnectionAdapters
    module Type
      class Date < Value # :nodoc:
        def type
          :date
        end

        def klass
          ::Date
        end

        private

        def cast_value(value)
          if value.is_a?(::String)
            return if value.empty?
            fast_string_to_date(value) || fallback_string_to_date(value)
          elsif value.respond_to?(:to_date)
            value.to_date
          else
            value
          end
        end

        def fast_string_to_date(string)
          if string =~ Column::Format::ISO_DATE
            new_date $1.to_i, $2.to_i, $3.to_i
          end
        end

        def fallback_string_to_date(string)
          new_date(*::Date._parse(string, false).values_at(:year, :mon, :mday))
        end

        def new_date(year, mon, mday)
          if year && year != 0
            ::Date.new(year, mon, mday) rescue nil
          end
        end
      end
    end
  end
end