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Diffstat (limited to 'railties/guides/source/migrations.textile')
| -rw-r--r-- | railties/guides/source/migrations.textile | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/railties/guides/source/migrations.textile b/railties/guides/source/migrations.textile index 6fcc3cf4a2..7faa18e888 100644 --- a/railties/guides/source/migrations.textile +++ b/railties/guides/source/migrations.textile @@ -673,9 +673,3 @@ The Active Record way claims that intelligence belongs in your models, not in th Validations such as +validates :foreign_key, :uniqueness => true+ are one way in which models can enforce data integrity. The +:dependent+ option on associations allows models to automatically destroy child objects when the parent is destroyed. Like anything which operates at the application level these cannot guarantee referential integrity and so some people augment them with foreign key constraints. Although Active Record does not provide any tools for working directly with such features, the +execute+ method can be used to execute arbitrary SQL. There are also a number of plugins such as "foreign_key_migrations":https://github.com/harukizaemon/redhillonrails/tree/master/foreign_key_migrations/ which add foreign key support to Active Record (including support for dumping foreign keys in +db/schema.rb+). - -h3. Changelog - -* April 26, 2011: change generated +up+ and +down+ methods to +change+ method, and describe detail about +change+ method by "Prem Sichanugrist":http://sikachu.com -* July 15, 2010: minor typos corrected by "Jaime Iniesta":http://jaimeiniesta.com -* September 14, 2008: initial version by "Frederick Cheung":credits.html#fcheung |