1 files changed, 9 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb
index 30ccb8f0a4..2859fb31e8 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb
@@ -17,6 +17,15 @@ module ActiveRecord
         64
       end
 
+      # Returns the maximum allowed length for an index name. This
+      # limit is enforced by rails and Is less than or equal to
+      # <tt>index_name_length</tt>. The gap between
+      # <tt>index_name_length</tt> is to allow internal rails
+      # opreations to use prefixes in temporary opreations.
+      def allowed_index_name_length
+        index_name_length
+      end
+
       # Returns the maximum length of an index name.
       def index_name_length
         64