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| author | Kuldeep Aggarwal <kd.engineer@yahoo.co.in> | 2013-11-29 18:49:56 +0530 |
|---|---|---|
| committer | Kuldeep Aggarwal <kd.engineer@yahoo.co.in> | 2013-11-29 18:49:56 +0530 |
| commit | 647cff3a134772bc6374b89e95d13497e23b5309 (patch) | |
| tree | b82e5ea545bf0792f4276a33cadf38bb3010429d /guides | |
| parent | 948c0ff1647eb3dd1b45add0d1748d393cd2fd50 (diff) | |
| download | rails-647cff3a134772bc6374b89e95d13497e23b5309.tar.gz rails-647cff3a134772bc6374b89e95d13497e23b5309.tar.bz2 rails-647cff3a134772bc6374b89e95d13497e23b5309.zip | |
updating options documentation for associations
removed unnecessary test case and improved test case for belongs_to having invalid options
Diffstat (limited to 'guides')
| -rw-r--r-- | guides/source/association_basics.md | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index c0482f6106..9867d2dc3f 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -864,8 +864,12 @@ end Counter cache columns are added to the containing model's list of read-only attributes through `attr_readonly`. ##### `:dependent` +If you set the `:dependent` option to: -If you set the `:dependent` option to `:destroy`, then deleting this object will call the `destroy` method on the associated object to delete that object. If you set the `:dependent` option to `:delete`, then deleting this object will delete the associated object _without_ calling its `destroy` method. If you set the `:dependent` option to `:restrict`, then attempting to delete this object will result in a `ActiveRecord::DeleteRestrictionError` if there are any 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. |