allow widget views to be written in any Tilt-supported template language

Author: apeckham

lib/dashing.rb

@@ -50,21 +50,20 @@ def protected!
 
 get '/:dashboard' do
   protected!
-  view_engine = Tilt.mappings.keys.find do |ext|
-    File.exist? File.join(settings.views, "#{params[:dashboard]}.#{ext}")
+  tilt_html_engines.each do |suffix, _|
+    file = File.join(settings.views, "#{params[:dashboard]}.#{suffix}")
+    return render(suffix.to_sym, params[:dashboard].to_sym) if File.exist? file
   end
 
-  if view_engine
-    render view_engine.to_sym, params[:dashboard].to_sym
-  else
-    halt 404
-  end
+  halt 404
 end
 
 get '/views/:widget?.html' do
   protected!
-  widget = params[:widget]
-  send_file File.join(settings.root, 'widgets', widget, "#{widget}.html")
+  tilt_html_engines.each do |suffix, engines|
+    file = File.join(settings.root, "widgets", params[:widget], "#{params[:widget]}.#{suffix}")
+    return engines.first.new(file).render if File.exist? file
+  end
 end
 
 post '/widgets/:id' do
@@ -116,6 +115,13 @@ def first_dashboard
   files.first
 end
 
+def tilt_html_engines
+  Tilt.mappings.select do |_, engines|
+    default_mime_type = engines.first.default_mime_type
+    default_mime_type.nil? || default_mime_type == 'text/html'
+  end
+end
+
 Dir[File.join(settings.root, 'lib', '**', '*.rb')].each {|file| require file }
 {}.to_json # Forces your json codec to initialize (in the event that it is lazily loaded). Does this before job threads start.
 

test/app_test.rb

@@ -72,26 +72,33 @@ def test_get_dashboard
       get '/sampletv'
       assert_equal 200, last_response.status
       assert_include last_response.body, 'class="gridster"'
+      assert_include last_response.body, "DOCTYPE"
     end
   end
 
   begin
     require 'haml'
-    def test_get_haml
+
+    def test_get_haml_dashboard
       with_generated_project do |dir|
-        File.write(File.join(dir, "dashboards/hamltest.haml"), <<-HAML)
-.gridster
-  %ul
-    %li{data: {col: 1, row: 1, sizex: 1, sizey: 1}}
-      %div{data: {view: "Clock"}}
-      %i.icon-time.icon-background
-HAML
+        File.write(File.join(dir, 'dashboards/hamltest.haml'), '.gridster')
         get '/hamltest'
         assert_equal 200, last_response.status
         assert_include last_response.body, "class='gridster'"
       end
     end
+
+    def test_get_haml_widget
+      with_generated_project do |dir|
+        File.write(File.join(dir, 'widgets/clock/clock.haml'), '%h1 haml')
+        File.unlink(File.join(dir, 'widgets/clock/clock.html'))
+        get '/views/clock.html'
+        assert_equal 200, last_response.status
+        assert_include last_response.body, '<h1>haml</h1>'
+      end
+    end
   rescue LoadError
+    puts "[skipping haml tests because haml isn't installed]"
   end
 
   def test_get_nonexistent_dashboard