aboutsummaryrefslogtreecommitdiffstats
path: root/activerecord/lib/active_record/associations.rb
diff options
context:
space:
mode:
Diffstat (limited to 'activerecord/lib/active_record/associations.rb')
-rw-r--r--activerecord/lib/active_record/associations.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index 14af55f327..35bc09bb10 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -1245,6 +1245,10 @@ module ActiveRecord
# that is the inverse of this <tt>has_many</tt> association. Does not work in combination
# with <tt>:through</tt> or <tt>:as</tt> options.
# See ActiveRecord::Associations::ClassMethods's overview on Bi-directional associations for more detail.
+ # [:extend]
+ # Specifies a module or array of modules that will be extended into the association object returned.
+ # Useful for defining methods on associations, especially when they should be shared between multiple
+ # association objects.
#
# Option examples:
# has_many :comments, -> { order "posted_on" }