Add missing caching information to logs (reidmorrison#126)

* Fix logging of cache_hit and cache_hits

* Add whether a sql statement came from the query cache to ActiveRecord log statements

Author: arjan0307

lib/rails_semantic_logger/action_view/log_subscriber.rb

@@ -40,7 +40,7 @@ def render_partial(event)
           partial: from_rails_root(event.payload[:identifier])
         }
         payload[:within] = from_rails_root(event.payload[:layout]) if event.payload[:layout]
-        payload[:cache]  = payload[:cache_hit] unless event.payload[:cache_hit].nil?
+        payload[:cache]  = event.payload[:cache_hit] unless event.payload[:cache_hit].nil?
         payload[:allocations] = event.allocations if event.respond_to?(:allocations)
 
         logger.measure(
@@ -60,7 +60,7 @@ def render_collection(event)
           template: from_rails_root(identifier),
           count:    event.payload[:count]
         }
-        payload[:cache_hits] = payload[:cache_hits] if payload[:cache_hits]
+        payload[:cache_hits] = event.payload[:cache_hits] if event.payload[:cache_hits]
         payload[:allocations] = event.allocations if event.respond_to?(:allocations)
 
         logger.measure(

lib/rails_semantic_logger/active_record/log_subscriber.rb

@@ -32,6 +32,7 @@ def sql(event)
         log_payload         = {sql: payload[:sql]}
         log_payload[:binds] = bind_values(payload) unless (payload[:binds] || []).empty?
         log_payload[:allocations] = event.allocations if event.respond_to?(:allocations)
+        log_payload[:cached] = event.payload[:cached]
 
         log = {
           message:  name,