Module: ActiveRecord::AttributeMethods::Read

Extended by:
ActiveSupport::Concern
Defined in:
activerecord/lib/active_record/attribute_methods/read.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Methods included from ActiveSupport::Concern

append_features, class_methods, extended, included, prepend_features, prepended

Instance Method Details

#_read_attribute(attr_name, &block) ⇒ Object Also known as: attribute

This method exists to avoid the expensive primary_key check internally, without breaking compatibility with the read_attribute API


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# File 'activerecord/lib/active_record/attribute_methods/read.rb', line 38

def _read_attribute(attr_name, &block) # :nodoc
  sync_with_transaction_state if @transaction_state&.finalized?
  @attributes.fetch_value(attr_name.to_s, &block)
end

#read_attribute(attr_name, &block) ⇒ Object

Returns the value of the attribute identified by attr_name after it has been typecast (for example, “2004-12-12” in a date column is cast to a date object, like Date.new(2004, 12, 12)).


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# File 'activerecord/lib/active_record/attribute_methods/read.rb', line 28

def read_attribute(attr_name, &block)
  name = attr_name.to_s
  name = self.class.attribute_aliases[name] || name

  name = @primary_key if name == "id" && @primary_key
  _read_attribute(name, &block)
end