class JsonDumper::KeyTransformer

Public Class Methods

array_like?(obj) click to toggle source
# File lib/json_dumper/key_transformer.rb, line 37
def self.array_like?(obj)
  obj.is_a?(Array) || (defined?(ActiveRecord::Relation) && obj.is_a?(ActiveRecord::Relation))
end
camelize(string) click to toggle source
# File lib/json_dumper/key_transformer.rb, line 41
def self.camelize(string)
  string.split('_').each_with_index.map do |word, index|
    index == 0 ? word : word.capitalize
  end.join
end
keys_to_camelcase(obj) click to toggle source
# File lib/json_dumper/key_transformer.rb, line 3
def self.keys_to_camelcase(obj)
  return nil if obj.nil?
  if array_like?(obj)
    return keys_to_camelcase_array(obj)
  end
  result = obj.map do |k, v|
    new_value = if v.respond_to?(:each_pair)
                  keys_to_camelcase(v)
                elsif array_like?(v)
                  keys_to_camelcase_array(v)
                else
                  v
                end
    new_key = if k.is_a?(String)
                camelize(k)
              elsif k.is_a?(Symbol)
                camelize(k.to_s).to_sym
              else
                k
              end
    [new_key, new_value]
  end.to_h
  if defined?(HashWithIndifferentAccess) && obj.is_a?(HashWithIndifferentAccess)
    result = HashWithIndifferentAccess.new(result)
  end
  result
end
keys_to_camelcase_array(arr) click to toggle source
# File lib/json_dumper/key_transformer.rb, line 31
def self.keys_to_camelcase_array(arr)
  arr.map do |v|
    v.respond_to?(:each_pair) ? keys_to_camelcase(v) : v
  end
end