removes the convenience instance version of AR::Base.silence_auto_explain

Rationale: As discussed with José and Jon, this convenience
shortcut is not clearly justified and it could let the user
thing the disabled EXPLAINs are related to the model instance
rather than being globally disabled.

1 files changed, 2 insertions, 3 deletions

diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile
index 742aefc32f..0cbabd71a1 100644
--- a/railties/guides/source/active_record_querying.textile
+++ b/railties/guides/source/active_record_querying.textile
@@ -1391,11 +1391,10 @@ production modes.
 
 h5. Disabling Automatic EXPLAIN
 
-Automatic EXPLAIN can be selectively silenced with +silence_auto_explain+, which
-is a class and instance method of +ActiveRecord::Base+:
+Automatic EXPLAIN can be selectively silenced with +ActiveRecord::Base.silence_auto_explain+:
 
 <ruby>
-silence_auto_explain do
+ActiveRecord::Base.silence_auto_explain do
   # no automatic EXPLAIN is triggered here
 end
 </ruby>