@@ -63,6 +63,21 @@ One of the child models: # nothing end +For your parent and child models, you don't need any special fields in your migration. For the join model (GuestsKennel), use a migration like so: + + class CreateGuestsKennels < ActiveRecord::Migration + def self.up + create_table :guests_kennels do |t| + t.references :guest, :polymorphic => true + t.references :kennel + end + end + + def self.down + drop_table :guests_kennels + end + end + See ActiveRecord::Associations::PolymorphicClassMethods for more configuration options. == Helper methods example @@ -113,6 +128,21 @@ Now, dogs and cats can eat birds and cats. Birds can't eat anything (they aren't In this case, each guest/eaten relationship is called a Devouring. +In your migration, you need to declare both sides as polymorphic: + + class CreateDevourings < ActiveRecord::Migration + def self.up + create_table :devourings do |t| + t.references :guest, :polymorphic => true + t.references :eaten, :polymorphic => true + end + end + + def self.down + drop_table :devourings + end + end + See ActiveRecord::Associations::PolymorphicClassMethods for more. == Tagging generator README @@ -1,5 +1,2 @@ -* Does :namespace key definitely work with doubles? -* Migration examples in docs -* Controller for tagging generator * Tag cloud method TODO 0d04e56f9a8460607c0d438d75e13031ce03fa0a Evan Weaver evan@cloudbur.st http://github.com/fauna/has_many_polymorphs/commit/e4a2cc75961ffc32190e9a774968d3b182e3e59c e4a2cc75961ffc32190e9a774968d3b182e3e59c 2008-01-15T16:29:54-08:00 2008-01-15T16:29:54-08:00 migration examples, finally! f8474ea9951c8d7cb30a5e1164892fd2084f177d Evan Weaver evan@cloudbur.st