1unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED 2 require 'json' 3end 4require 'date' 5 6# DateTime serialization/deserialization 7class DateTime 8 9 # Deserializes JSON string by converting year <tt>y</tt>, month <tt>m</tt>, 10 # day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>, 11 # offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> to DateTime. 12 def self.json_create(object) 13 args = object.values_at('y', 'm', 'd', 'H', 'M', 'S') 14 of_a, of_b = object['of'].split('/') 15 if of_b and of_b != '0' 16 args << Rational(of_a.to_i, of_b.to_i) 17 else 18 args << of_a 19 end 20 args << object['sg'] 21 civil(*args) 22 end 23 24 alias start sg unless method_defined?(:start) 25 26 # Returns a hash, that will be turned into a JSON object and represent this 27 # object. 28 def as_json(*) 29 { 30 JSON.create_id => self.class.name, 31 'y' => year, 32 'm' => month, 33 'd' => day, 34 'H' => hour, 35 'M' => min, 36 'S' => sec, 37 'of' => offset.to_s, 38 'sg' => start, 39 } 40 end 41 42 # Stores class name (DateTime) with Julian year <tt>y</tt>, month <tt>m</tt>, 43 # day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>, 44 # offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string 45 def to_json(*args) 46 as_json.to_json(*args) 47 end 48end 49 50 51