shorten long line of GanttsController

git-svn-id: http://svn.redmine.org/redmine/trunk@20180 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/gantts_controller.rb

@@ -40,9 +40,19 @@ class GanttsController < ApplicationController
     basename = (@project ? "#{@project.identifier}-" : '') + 'gantt'
 
     respond_to do |format|
-      format.html { render :action => "show", :layout => !request.xhr? }
-      format.png  { send_data(@gantt.to_image, :disposition => 'inline', :type => 'image/png', :filename => "#{basename}.png") } if @gantt.respond_to?('to_image')
-      format.pdf  { send_data(@gantt.to_pdf, :type => 'application/pdf', :filename => "#{basename}.pdf") }
+      format.html {render :action => "show", :layout => !request.xhr?}
+      if @gantt.respond_to?('to_image')
+        format.png do
+          send_data(@gantt.to_image,
+                    :disposition => 'inline', :type => 'image/png',
+                    :filename => "#{basename}.png")
+        end
+      end
+      format.pdf do
+        send_data(@gantt.to_pdf,
+                  :type => 'application/pdf',
+                  :filename => "#{basename}.pdf")
+      end
     end
   end
 end