Support for the Ruby 2.4 series has ended. See here for reference.
Object
Returns a hash, that will be turned into a JSON
object and represent this object.
# File json/lib/json/add/date.rb, line 19 def as_json(*) { JSON.create_id => self.class.name, 'y' => year, 'm' => month, 'd' => day, 'sg' => start, } end