A Rails initializer to use YAJL instead of ActiveSupport for JSON encoding.

yajl.rb

# Use YAJL instead of ActiveSupport::JSON to encode objects to JSON in Rails.
class Hash
  def to_json(options = nil)
    Yajl::Encoder.encode(as_json(options))
  end
end

class Array
  def to_json(options = nil)
    Yajl::Encoder.encode(as_json(options))
  end

  def as_json(options = nil)
    map { |value| value.as_json(options) }
  end
end

class Object
  def to_json(options = nil)
    Yajl::Encoder.encode(as_json(options))
  end
end