Best practice to create a JSON string of one object containing an array of other objects using Ruby? -

what practice create json string of 1 object (object of class a) containing array of objects (objects of class b)? particularly interessted in implementation of class's to_json method.

assuming class looks follows:

class   attr_accessor :items   def initialize()     @items = array.new   end   def to_json(*a)     ?secret of day?   end end 

and class b:

class b   def to_json(*a)     {"class b" => "class b"}.to_json(*a)   end end 

the best solution got far is:

def to_json(*a)   json = array.new   @items.each |item|     json << item.to_json(*a)   end   {"class a" => json}.to_json(*a) end 

assuming there 1 item in array of object of class a, resulting json string looks follows:

{"class a":["{\"class b\":\"class b\"}"]}

i sure can better?

i instead

 def to_json(*a)       {"class a" => @items}.to_json(*a)  end 

the problem approach @items array contains strings, not objects. in case to_json create array of strings, not array of objects.