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Diffstat (limited to 'guides/source/association_basics.md')
| -rw-r--r-- | guides/source/association_basics.md | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index b9c9995a79..3f63c31cce 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -1467,7 +1467,13 @@ The `collection_singular_ids=` method makes the collection contain only the obje ##### `collection.clear` -The `collection.clear` method removes every object from the collection. This destroys the associated objects if they are associated with `dependent: :destroy`, deletes them directly from the database if `dependent: :delete_all`, and otherwise sets their foreign keys to `NULL`. +The `collection.clear` method removes all objects from the collection according to the strategy specified by the `dependent` option. If no option is given, it follows the default strategy. The default strategy for `has_many :through` associations is `delete_all`, and for `has_many` associations is to set the foreign keys to `NULL`. + +```ruby +@customer.orders.clear +``` + +WARNING: Objects will be delete if they're associated with `dependent: :destroy`, just like `dependent: :delete_all`. ##### `collection.empty?` |