add error string when widget not rendered

This prevents the cryptic ruby raw string being printed if no rendering
template were found.

Closes: #307

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/dashing/app.rb b/lib/dashing/app.rb
index 033849c..933ef5b 100644
--- a/lib/dashing/app.rb
+++ b/lib/dashing/app.rb
@@ -117,6 +117,7 @@ get '/views/:widget?.html' do
     file = File.join(settings.root, "widgets", params[:widget], "#{params[:widget]}.#{suffix}")
     return engines.first.new(file).render if File.exist? file
   end
+  "Drats! Unable to find a widget file named: #{params[:widget]} to render."
 end
 
 def send_event(id, body, target=nil)