Suppress asset output in log

config/environments/development.rb

@@ -35,6 +35,9 @@ Rails.application.configure do
   # yet still be able to expire them through the digest params.
   config.assets.digest = true
 
+  # Suppress logger output for asset requests.
+  config.assets.quiet = true
+
   # Adds additional error checking when serving assets at runtime.
   # Checks for improperly declared sprockets dependencies.
   # Raises helpful error messages.