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| -rw-r--r-- | railties/doc/guides/activerecord/association_basics.txt | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/railties/doc/guides/activerecord/association_basics.txt b/railties/doc/guides/activerecord/association_basics.txt index b91052f91f..f9ec7a5f55 100644 --- a/railties/doc/guides/activerecord/association_basics.txt +++ b/railties/doc/guides/activerecord/association_basics.txt @@ -698,8 +698,6 @@ end Counter cache columns are added to the containing model's list of read-only attributes through +attr_readonly+. -WARNING: When you create a counter cache column in the database, be sure to specify a default value of zero. Otherwise, Rails will not properly maintain the counter. - ===== +:dependent+ 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. |