make imageinput work with dogfood, fix typo in responsetypes.imageresponse

djangoapps/courseware/capa/responsetypes.py

@@ -635,7 +635,7 @@ class ImageResponse(GenericResponse):
             # parse given answer
             m = re.match('\[([0-9]+),([0-9]+)]',given.strip().replace(' ',''))
             if not m:
-                raise Exception,'[capamodule.capa.responsetypes.imageinput] error grading %s (input=%s)' % (err,aid,given)
+                raise Exception,'[capamodule.capa.responsetypes.imageinput] error grading %s (input=%s)' % (aid,given)
             (gx,gy) = [int(x) for x in m.groups()]
             
             # answer is correct if (x,y) is within the specified rectangle

templates/dogfood.html

@@ -102,6 +102,9 @@
   <script type="text/javascript" src="${static.url('js/schematic.js')}"></script>
   <script type="text/javascript" src="${static.url('js/cktsim.js')}"></script>
 
+## image input: for clicking on images (see imageinput.html)
+  <script type="text/javascript" src="/static/js/imageinput.js"></script>
+
   <%block name="js_extra"/>
 
 </body>