diff options
| -rw-r--r-- | activerecord/lib/active_record/relation/query_methods.rb | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 00030b9e1f..57f80d383e 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -359,6 +359,10 @@ module ActiveRecord self end + # Allows to specify a HAVING clause. Note that you can't use HAVING + # without also specifying a GROUP clause. + # + # Order.having('SUM(price) > 30').group('user_id') def having(opts, *rest) opts.blank? ? self : spawn.having!(opts, *rest) end @@ -400,6 +404,8 @@ module ActiveRecord self end + # Specifies locking settings (default to +true+). For more information + # on locking, please see +ActiveRecord::Locking+. def lock(locks = true) spawn.lock!(locks) end @@ -448,6 +454,12 @@ module ActiveRecord scoped.extending(NullRelation) end + # Sets readonly attributes for the returned relation. If value is + # true (default), attempting to update a record will result in an error. + # + # users = User.readonly + # users.first.save + # => ActiveRecord::ReadOnlyRecord: ActiveRecord::ReadOnlyRecord def readonly(value = true) spawn.readonly!(value) end |