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-rw-r--r--activerecord/lib/active_record/associations.rb2
-rw-r--r--activerecord/lib/active_record/relation/query_methods.rb36
2 files changed, 37 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index 8d755b6848..9e7d609d19 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -1329,7 +1329,7 @@ module ActiveRecord
#
# [:class_name]
# Specify the class name of the association. Use it only if that name can't be inferred
- # from the association name. So <tt>has_one :author</tt> will by default be linked to the Author class, but
+ # from the association name. So <tt>belongs_to :author</tt> will by default be linked to the Author class, but
# if the real class name is Person, you'll have to specify it with this option.
# [:conditions]
# Specify the conditions that the associated object must meet in order to be included as a +WHERE+
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb
index 7eda9ad8e8..a11b7a3864 100644
--- a/activerecord/lib/active_record/relation/query_methods.rb
+++ b/activerecord/lib/active_record/relation/query_methods.rb
@@ -147,6 +147,42 @@ module ActiveRecord
relation
end
+ # Used to extend a scope with additional methods, either through
+ # a module or through a block provided.
+ #
+ # The object returned is a relation, which can be further extended.
+ #
+ # === Using a module
+ #
+ # module Pagination
+ # def page(number)
+ # # pagination code goes here
+ # end
+ # end
+ #
+ # scope = Model.scoped.extending(Pagination)
+ # scope.page(params[:page])
+ #
+ # You can also pass a list of modules:
+ #
+ # scope = Model.scoped.extending(Pagination, SomethingElse)
+ #
+ # === Using a block
+ #
+ # scope = Model.scoped.extending do
+ # def page(number)
+ # # pagination code goes here
+ # end
+ # end
+ # scope.page(params[:page])
+ #
+ # You can also use a block and a module list:
+ #
+ # scope = Model.scoped.extending(Pagination) do
+ # def per_page(number)
+ # # pagination code goes here
+ # end
+ # end
def extending(*modules)
modules << Module.new(&Proc.new) if block_given?