module ParamsReady::Extensions::Collection

Public Instance Methods

collection( collection_name, element_name, freeze_collection: true, freeze_value: true, getter: true, obligatory: false, &block ) click to toggle source
# File lib/params_ready/extensions/collection.rb, line 6
def collection(
  collection_name,
  element_name,
  freeze_collection: true,
  freeze_value: true,
  getter: true,
  obligatory: false,
  &block
)
  full_name = "@#{collection_name}"
  define_method "add_#{element_name}" do |value|
    value = instance_exec(value, &block) unless block.nil?
    next if value == Extensions::Undefined

    collection = send collection_name
    value.freeze if freeze_value
    collection << value
  end

  if getter
    define_method collection_name do
      if instance_variable_defined? full_name
        instance_variable_get full_name
      elsif frozen?
        [].freeze
      else
        instance_variable_set full_name, []
        instance_variable_get full_name
      end
    end
  end

  obligatory! collection_name if obligatory
  freeze_variable collection_name if freeze_collection
end