Class: DateTime

Relationships & Source Files
Inherits:	Object
Defined in:	ext/json/lib/json/add/date_time.rb

Class Method Summary

.json_create(object)

See #as_json.

Instance Method Summary

#as_json

Methods as_json and .json_create may be used to serialize and deserialize a DateTime object; see Marshal.
#start
#to_json(*args)

Returns a ::JSON string representing self:

Class Method Details

.json_create(object)

See #as_json.

[ GitHub ]

# File 'ext/json/lib/json/add/date_time.rb', line 10


def self.json_create(object)
  args = object.values_at('y', 'm', 'd', 'H', 'M', 'S')
  of_a, of_b = object['of'].split('/')
  if of_b and of_b != '0'
    args << Rational(of_a.to_i, of_b.to_i)
  else
    args << of_a
  end
  args << object['sg']
  civil(*args)
end

Instance Method Details

#as_json

Methods as_json and .json_create may be used to serialize and deserialize a DateTime object; see Marshal.

Method as_json serializes self, returning a 2-element hash representing self:

require 'json/add/datetime'
x = DateTime.now.as_json
# => {"json_class"=>"DateTime", "y"=>2023, "m"=>11, "d"=>21, "sg"=>2299161.0}

Method JSON.create deserializes such a hash, returning a DateTime object:

DateTime.json_create(x) # BUG? Raises Date::Error "invalid date"

[ GitHub ]

# File 'ext/json/lib/json/add/date_time.rb', line 39


def as_json(*)
  {
    JSON.create_id => self.class.name,
    'y' => year,
    'm' => month,
    'd' => day,
    'H' => hour,
    'M' => min,
    'S' => sec,
    'of' => offset.to_s,
    'sg' => start,
  }
end

#start

[ GitHub ]

# File 'ext/json/lib/json/add/date_time.rb', line 22


alias start sg unless method_defined?(:start)

#to_json(*args)

Returns a ::JSON string representing self:

require 'json/add/datetime'
puts DateTime.now.to_json

Output:

{"json_class":"DateTime","y":2023,"m":11,"d":21,"sg":2299161.0}

[ GitHub ]

# File 'ext/json/lib/json/add/date_time.rb', line 62


def to_json(*args)
  as_json.to_json(*args)
end