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author | Murray Steele <muz@h-lame.com> | 2009-05-01 16:01:13 +0100 |
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committer | Jeremy Kemper <jeremy@bitsweat.net> | 2009-05-04 15:27:39 -0700 |
commit | ccea98389abbf150b886c9f964b1def47f00f237 (patch) | |
tree | d1d23dec77f509af84a5b5363818606db5f575a6 /activerecord/test/schema | |
parent | eb201e64c0b68aee6d0715d44cf48178204c4133 (diff) | |
download | rails-ccea98389abbf150b886c9f964b1def47f00f237.tar.gz rails-ccea98389abbf150b886c9f964b1def47f00f237.tar.bz2 rails-ccea98389abbf150b886c9f964b1def47f00f237.zip |
Providing support for :inverse_of as an option to associations.
You can now add an :inverse_of option to has_one, has_many and belongs_to associations. This is best described with an example:
class Man < ActiveRecord::Base
has_one :face, :inverse_of => :man
end
class Face < ActiveRecord::Base
belongs_to :man, :inverse_of => :face
end
m = Man.first
f = m.face
Without :inverse_of m and f.man would be different instances of the same object (f.man being pulled from the database again). With these new :inverse_of options m and f.man are the same in memory instance.
Currently :inverse_of supports has_one and has_many (but not the :through variants) associations. It also supplies inverse support for belongs_to associations where the inverse is a has_one and it's not a polymorphic.
Signed-off-by: Murray Steele <muz@h-lame.com>
Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>
Diffstat (limited to 'activerecord/test/schema')
-rw-r--r-- | activerecord/test/schema/schema.rb | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/activerecord/test/schema/schema.rb b/activerecord/test/schema/schema.rb index 6918a4fcab..3b0e17c867 100644 --- a/activerecord/test/schema/schema.rb +++ b/activerecord/test/schema/schema.rb @@ -468,6 +468,26 @@ ActiveRecord::Schema.define do end end + # NOTE - the following 4 tables are used by models that have :inverse_of options on the associations + create_table :men, :force => true do |t| + t.string :name + end + + create_table :faces, :force => true do |t| + t.string :description + t.integer :man_id + end + + create_table :interests, :force => true do |t| + t.string :topic + t.integer :man_id + t.integer :zine_id + end + + create_table :zines, :force => true do |t| + t.string :title + end + except 'SQLite' do # fk_test_has_fk should be before fk_test_has_pk create_table :fk_test_has_fk, :force => true do |t| |