updates

common/lib/capa/capa/inputtypes.py

@@ -44,6 +44,7 @@ from lxml import etree
 import re
 import shlex  # for splitting quoted strings
 import sys
+import os
 
 from registry import TagRegistry
 
@@ -802,12 +803,23 @@ class DragAndDropInput(InputTypeBase):
         """
         Note: height, width, images_directory_path are required.
         """
-        images_directory_path =  Attribute('images_directory_path')
+        # import ipdb; ipdb.set_trace()
         return [Attribute('height'),
                 Attribute('width'),
-                images_directory_path,
+                Attribute('images_directory_path'),
                 ]
 
+    def setup(self):
+        # import ipdb; ipdb.set_trace()
+        imagepath = self.loaded_attributes['images_directory_path']
+        # import ipdb; ipdb.set_trace()
+        try:
+            images_list = self.system.filestore.listdir(os.path.join('static',
+                                                    'images', imagepath))
+        except:
+            images_list = []
+        self.loaded_attributes['images_list'] = images_list
+
 registry.register(DragAndDropInput)
 
 #--------------------------------------------------------------------------------------------------------------------

common/lib/capa/capa/templates/drag_and_drop_input.html

 <section id="inputtype_${id}" class="capa_inputtype" >
     <div class="drag_and_drop_problem" id="drag_and_drop_div_${id}"
     style="width:${width};height:${height}">
-        % if item
+    <p>${images_list}</p>
+        % if images_list:
             <ul>
-                % for item in images_directory_path:
+                % for item in images_list:
                     <li>${item}</li>
                 % endfor
             </ul>