Methods
C
D
Instance Public methods
cache_attribute?(attr_name)

Returns true if the provided attribute is being cached.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/read.rb, line 33
def cache_attribute?(attr_name)
  cached_attributes.include?(attr_name)
end
cache_attributes(*attribute_names)

cache_attributes allows you to declare which converted attribute values should be cached. Usually caching only pays off for attributes with expensive conversion methods, like time related columns (e.g. created_at, updated_at).

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/read.rb, line 22
def cache_attributes(*attribute_names)
  cached_attributes.merge attribute_names.map { |attr| attr.to_s }
end
cached_attributes()

Returns the attributes which are cached. By default time related columns with datatype :datetime, :timestamp, :time, :date are cached.

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/read.rb, line 28
def cached_attributes
  @cached_attributes ||= columns.select { |c| cacheable_column?(c) }.map { |col| col.name }.to_set
end
Instance Protected methods
define_method_attribute(attr_name)

Source: show | on GitHub 

# File activerecord/lib/active_record/attribute_methods/read.rb, line 38
def define_method_attribute(attr_name)
  if serialized_attributes.include?(attr_name)
    define_read_method_for_serialized_attribute(attr_name)
  else
    define_read_method(attr_name, attr_name, columns_hash[attr_name])
  end

  if attr_name == primary_key && attr_name != "id"
    define_read_method('id', attr_name, columns_hash[attr_name])
  end
end