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Diffstat (limited to 'guides/source/association_basics.md')
| -rw-r--r-- | guides/source/association_basics.md | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index 1212ae53bc..febe988b98 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -968,13 +968,12 @@ side of the association. Counter cache columns are added to the containing model's list of read-only attributes through `attr_readonly`. ##### `:dependent` -Controls what happens to associated objects when their owner is destroyed: +If you set the `:dependent` option to: -* `:destroy` causes the associated objects to also be destroyed. -* `:delete_all` causes the associated objects to be deleted directly from the database (callbacks are not executed). -* `:nullify` causes the foreign keys to be set to `NULL` (callbacks are not executed). -* `:restrict_with_exception` causes an exception to be raised if there are associated records. -* `:restrict_with_error` causes an error to be added to the owner if there are associated objects. +* `:destroy`, when the object is destroyed, `destroy` will be called on its +associated objects. +* `:delete`, when the object is destroyed, all its associated objects will be +deleted directly from the database without calling their `destroy` method. WARNING: You should not specify this option on a `belongs_to` association that is connected with a `has_many` association on the other class. Doing so can lead to orphaned records in your database. |