Module: ActiveModelSerializers::HashWrapper

Defined in:
lib/active_model_serializers/hash_wrapper.rb,
lib/active_model_serializers/hash_wrapper/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Class Method Details

.create(model_name, hash) ⇒ Object 



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# File 'lib/active_model_serializers/hash_wrapper.rb', line 47

def create(model_name, hash)
  klass = wrapper_class(model_name)
  klass.new(source_hash: hash)
end

.wrapper_class(model_name) ⇒ Object 



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# File 'lib/active_model_serializers/hash_wrapper.rb', line 8

def wrapper_class(model_name)
  model_name = model_name.to_s

  Class.new(::ActiveModelSerializers::Model) do

    attr_accessor :source_hash

    delegate :[], to: :source_hash

    define_singleton_method :name do
      model_name
    end

    def read_attribute_for_serialization(attr_name)
      value = source_hash.has_key?(attr_name) ? source_hash[attr_name] : source_hash[attr_name.to_s]

      value = create_nested_wrapper(value, attr_name) if value.is_a?(Hash)

      value = value.map { |v| v.is_a?(Hash) ? create_nested_wrapper(v, attr_name) : v } if value.is_a?(Array)

      value
    end

    def as_json(*)
      # fallbacks to dumping the source_hash if AMS cannot infer a serializer,
      # and an explicit serializer is not specified
      source_hash
    end

  private

    def create_nested_wrapper(hash, attr_name)
      model_name = hash[:_hash_wrapper_model_name] || attr_name.to_s.classify
      ::ActiveModelSerializers::HashWrapper.create(model_name, hash)
    end

  end
end