Contents

module Granite
  module Form
    module Model
      module Attributes
        class Represents < Attribute
          delegate :reader, :reader_before_type_cast, :writer, to: :reflection

          def write(value)
            return if readonly?
            pollute do
              reset
              reference.send(writer, value)
            end
          end

          def reset
            super
            remove_variable(:cached_value, :cached_value_before_type_cast)
          end

          def read
            reset if cached_value != read_value
            variable_cache(:value) do
              normalize(enumerize(defaultize(cached_value, read_before_type_cast)))
            end
          end

          def read_before_type_cast
            reset if cached_value_before_type_cast != read_value_before_type_cast
            variable_cache(:value_before_type_cast) do
              defaultize(cached_value_before_type_cast)
            end
          end

        private

          def reference
            owner.send(reflection.reference)
          end

          def read_value
            ref = reference
            ref.public_send(reader) if ref
          end

          def cached_value
            variable_cache(:cached_value) { read_value }
          end

          def read_value_before_type_cast
            ref = reference
            return unless ref
            if ref.respond_to?(reader_before_type_cast)
              ref.public_send(reader_before_type_cast)
            else
              ref.public_send(reader)
            end
          end

          def cached_value_before_type_cast
            variable_cache(:cached_value_before_type_cast) { read_value_before_type_cast }
          end
        end
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
granite-form-0.3.0	lib/granite/form/model/attributes/represents.rb
granite-form-0.2.0	lib/granite/form/model/attributes/represents.rb
granite-form-0.1.1	lib/granite/form/model/attributes/represents.rb
granite-form-0.1.0	lib/granite/form/model/attributes/represents.rb