# File lib/json/add/rails.rb, line 19 19: def to_json(*a) 20: result = { 21: 'json_class' => self.class.name 22: } 23: instance_variables.inject(result) do |r, name| 24: r[name[1..-1]] = instance_variable_get name 25: r 26: end 27: result.to_json(*a) 28: end