diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute_methods/primary_key.rb')
| -rw-r--r-- | activerecord/lib/active_record/attribute_methods/primary_key.rb | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb index 365fdeb55a..82d94b848a 100644 --- a/activerecord/lib/active_record/attribute_methods/primary_key.rb +++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb @@ -3,6 +3,12 @@ module ActiveRecord module PrimaryKey extend ActiveSupport::Concern + # Returns this record's primary key value wrapped in an Array + # or nil if the record is a new_record? + def to_key + new_record? ? nil : [ id ] + end + module ClassMethods # Defines the primary key field -- can be overridden in subclasses. Overwriting will negate any effect of the # primary_key_prefix_type setting, though. |