I have two tables:
class PgmUpdate < ActiveRecord::Base
has_many :pgm_visits, :foreign_key => ‘pgm_update_fk’
class PgmVisit < ActiveRecord::Base
belongs_to :pgm_update, :foreign_key =>
‘pgm_update_fk’, :dependent => true
According to the has_many docs (http://api.rubyonrails.org/classes/
collection<<(object, â?¦) - adds one or more objects to the collection
by setting their foreign keys to the collectionâ??s primary key.
But when I add a new, unsaved PgmVisit to an unsaved PgmUpdate the
PgmVisit still has a nil foreign key and no pgm_update to show for.
Are the docs failing to mention something about unsaved records? I
had similar unpredictable problems with WebObjects which is why I am
now learning Rails.
A related questing is when is the best time to set a custom primary
key? Is it required for collection<< to work? I would prefer to not
set it if possible since the DB will generate one, but I will if I
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