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-rw-r--r--guides/source/active_support_core_extensions.md3
1 files changed, 1 insertions, 2 deletions
diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md
index 23f53ac084..4c37f6aba9 100644
--- a/guides/source/active_support_core_extensions.md
+++ b/guides/source/active_support_core_extensions.md
@@ -927,8 +927,7 @@ The generation of the writer instance method can be prevented by setting the opt
```ruby
module ActiveRecord
class Base
- class_attribute :table_name_prefix, instance_writer: false
- self.table_name_prefix = ""
+ class_attribute :table_name_prefix, instance_writer: false, default: "my"
end
end
```