module ActiveRecord::AttributeMethods::PrimaryKey

Public Instance Methods

Returns the primary key value.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 17
def id
  return unless self.class.primary_key
  sync_with_transaction_state
  read_attribute(self.class.primary_key)
end

id=(value) Show source

Sets the primary key value.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 24
def id=(value)
  sync_with_transaction_state
  write_attribute(self.class.primary_key, value) if self.class.primary_key
end

id?() Show source

Queries the primary key value.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 30
def id?
  sync_with_transaction_state
  query_attribute(self.class.primary_key)
end

id_before_type_cast() Show source

Returns the primary key value before type cast.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 36
def id_before_type_cast
  sync_with_transaction_state
  read_attribute_before_type_cast(self.class.primary_key)
end

id_was() Show source

Returns the primary key previous value.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 42
def id_was
  sync_with_transaction_state
  attribute_was(self.class.primary_key)
end

to_key() Show source

Returns this record's primary key value wrapped in an Array if one is available.

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 10
def to_key
  sync_with_transaction_state
  key = self.id
  [key] if key
end

Protected Instance Methods

attribute_method?(attr_name) Show source

Calls superclass method

# File activerecord/lib/active_record/attribute_methods/primary_key.rb, line 49
def attribute_method?(attr_name)
  attr_name == 'id' || super
end