Use #model_name on instances instead of classes

This allows rails code to be more confdent when asking for a model name, instead of having to ask for the class.

Rails core discussion here: https://groups.google.com/forum/#!topic/rubyonrails-core/ThSaXw9y1F8

1 files changed, 4 insertions, 4 deletions

diff --git a/activerecord/lib/active_record/integration.rb b/activerecord/lib/active_record/integration.rb
index 31e2518540..15b2f65dcb 100644
--- a/activerecord/lib/active_record/integration.rb
+++ b/activerecord/lib/active_record/integration.rb
@@ -55,16 +55,16 @@ module ActiveRecord
     def cache_key(*timestamp_names)
       case
       when new_record?
-        "#{self.class.model_name.cache_key}/new"
+        "#{model_name.cache_key}/new"
       when timestamp_names.any?
         timestamp = max_updated_column_timestamp(timestamp_names)
         timestamp = timestamp.utc.to_s(cache_timestamp_format)
-        "#{self.class.model_name.cache_key}/#{id}-#{timestamp}"
+        "#{model_name.cache_key}/#{id}-#{timestamp}"
       when timestamp = max_updated_column_timestamp
         timestamp = timestamp.utc.to_s(cache_timestamp_format)
-        "#{self.class.model_name.cache_key}/#{id}-#{timestamp}"
+        "#{model_name.cache_key}/#{id}-#{timestamp}"
       else
-        "#{self.class.model_name.cache_key}/#{id}"
+        "#{model_name.cache_key}/#{id}"
       end
     end