2009/7/4 Learn by Doing <[email protected]>: > > If I have > > belongs_to :user > > Do I need to have > > validates_presence_of :user_id > > ? > > Does Rails validate the presence of :user_id automatically if I have > belongs_to :user? > > In other words, does Rails prevent against creating orphan records that > belong to non-existent users? >
I believe rails will not stop you creating a record with an empty user_id. To be pedantic this is 'does not belong to any user' rather than 'belongs to a non-existent user' (for a non-existent user the user_id would contain a non-nil value for which there is no user). In some applications this is a valid requirement. If you wish to prevent this then include validates_presence_of as you have indicated. Colin --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
