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-rw-r--r--guides/source/association_basics.md23
1 files changed, 11 insertions, 12 deletions
diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md
index 1212ae53bc..b5bd24d027 100644
--- a/guides/source/association_basics.md
+++ b/guides/source/association_basics.md
@@ -663,11 +663,11 @@ By default, associations look for objects only within the current module's scope
module MyApplication
module Business
class Supplier < ApplicationRecord
- has_one :account
+ has_one :account
end
class Account < ApplicationRecord
- belongs_to :supplier
+ belongs_to :supplier
end
end
end
@@ -679,13 +679,13 @@ This will work fine, because both the `Supplier` and the `Account` class are def
module MyApplication
module Business
class Supplier < ApplicationRecord
- has_one :account
+ has_one :account
end
end
module Billing
class Account < ApplicationRecord
- belongs_to :supplier
+ belongs_to :supplier
end
end
end
@@ -697,14 +697,14 @@ To associate a model with a model in a different namespace, you must specify the
module MyApplication
module Business
class Supplier < ApplicationRecord
- has_one :account,
+ has_one :account,
class_name: "MyApplication::Billing::Account"
end
end
module Billing
class Account < ApplicationRecord
- belongs_to :supplier,
+ belongs_to :supplier,
class_name: "MyApplication::Business::Supplier"
end
end
@@ -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.