Class: CacheCrispies::JsonBuilder

Inherits:
HashBuilder show all
Defined in:
lib/cache_crispies/json_builder.rb

Overview

Builds out a JSON string directly with Oj::StringWriter

Instance Method Summary collapse

Methods inherited from HashBuilder

#initialize

Constructor Details

This class inherits a constructor from CacheCrispies::HashBuilder

Instance Method Details

#call(json_writer, flat: false) ⇒ Oj::StringWriter

Builds the JSON string with Oj::StringWriter

Returns:

  • (Oj::StringWriter) 


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# File 'lib/cache_crispies/json_builder.rb', line 9

def call(json_writer, flat: false)
  if @serializer.model.nil?
    json_writer.push_value(nil)
    return
  end

  json_writer.push_object unless flat

  last_nesting = []

  serializer.attributes_by_nesting.each do |nesting, attributes|
    prefix_length = common_prefix_length(last_nesting, nesting)

    (last_nesting.length - prefix_length).times do
      json_writer.pop
    end

    nesting[prefix_length..-1].each do |key|
      json_writer.push_object(key.to_s)
    end

    attributes.each do |attrib|
      write_attribute(json_writer, attrib) if show?(attrib)
    end

    last_nesting = nesting
  end

  last_nesting.each do
    json_writer.pop
  end

  json_writer.pop unless flat

  json_writer
end