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-rw-r--r--guides/source/association_basics.md5
1 files changed, 3 insertions, 2 deletions
diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md
index e6a66f3fa1..9b80a65a44 100644
--- a/guides/source/association_basics.md
+++ b/guides/source/association_basics.md
@@ -1944,8 +1944,8 @@ While Rails uses intelligent defaults that will work well in most situations, th
```ruby
class Parts < ActiveRecord::Base
- has_and_belongs_to_many :assemblies, uniq: true,
- read_only: true
+ has_and_belongs_to_many :assemblies, autosave: true,
+ readonly: true
end
```
@@ -1957,6 +1957,7 @@ The `has_and_belongs_to_many` association supports these options:
* `:foreign_key`
* `:join_table`
* `:validate`
+* `:readonly`
##### `:association_foreign_key`