require 'active_record/attribute_set/builder' module ActiveRecord class AttributeSet # :nodoc: def initialize(attributes) @attributes = attributes end def [](name) attributes[name] || Attribute.null(name) end def []=(name, value) attributes[name] = value end def values_before_type_cast attributes.transform_values(&:value_before_type_cast) end def to_hash initialized_attributes.transform_values(&:value) end alias_method :to_h, :to_hash def key?(name) attributes.key?(name) && self[name].initialized? end def keys attributes.each_key.select { |name| self[name].initialized? } end def fetch_value(name) self[name].value { |n| yield n if block_given? } end def write_from_database(name, value) attributes[name] = self[name].with_value_from_database(value) end def write_from_user(name, value) attributes[name] = self[name].with_value_from_user(value) end def write_cast_value(name, value) attributes[name] = self[name].with_cast_value(value) end def freeze @attributes.freeze super end def initialize_dup(_) @attributes = attributes.deep_dup super end def initialize_clone(_) @attributes = attributes.clone super end def reset(key) if key?(key) write_from_database(key, nil) end end def accessed attributes.select { |_, attr| attr.has_been_read? }.keys end protected attr_reader :attributes private def initialized_attributes attributes.select { |_, attr| attr.initialized? } end end end