Allow non-public XBlock assets in debug mode

cms/envs/common.py

@@ -711,6 +711,9 @@ INSTALLED_APPS = (
     'south',
     'method_override',
 
+    # Common views
+    'openedx.core.djangoapps.common_views',
+
     # History tables
     'simple_history',
 

cms/urls.py

@@ -32,7 +32,7 @@ urlpatterns = patterns(
         'contentstore.views.component_handler', name='component_handler'),
 
     url(r'^xblock/resource/(?P<block_type>[^/]*)/(?P<uri>.*)$',
-        'contentstore.views.xblock.xblock_resource', name='xblock_resource_url'),
+        'openedx.core.djangoapps.common_views.xblock.xblock_resource', name='xblock_resource_url'),
 
     # temporary landing page for a course
     url(r'^edge/(?P<org>[^/]+)/(?P<course>[^/]+)/course/(?P<coursename>[^/]+)$',

lms/djangoapps/courseware/module_render.py

@@ -5,7 +5,6 @@ Module rendering
 import hashlib
 import json
 import logging
-import mimetypes
 
 import static_replace
 
@@ -946,23 +945,6 @@ def handle_xblock_callback(request, course_id, usage_id, handler, suffix=None):
         return _invoke_xblock_handler(request, course_id, usage_id, handler, suffix, course=course)
 
 
-def xblock_resource(request, block_type, uri):  # pylint: disable=unused-argument
-    """
-    Return a package resource for the specified XBlock.
-    """
-    try:
-        xblock_class = XBlock.load_class(block_type, select=settings.XBLOCK_SELECT_FUNCTION)
-        content = xblock_class.open_local_resource(uri)
-    except IOError:
-        log.info('Failed to load xblock resource', exc_info=True)
-        raise Http404
-    except Exception:  # pylint: disable=broad-except
-        log.error('Failed to load xblock resource', exc_info=True)
-        raise Http404
-    mimetype, _ = mimetypes.guess_type(uri)
-    return HttpResponse(content, mimetype=mimetype)
-
-
 def get_module_by_usage_id(request, course_id, usage_id, disable_staff_debug_info=False, course=None):
     """
     Gets a module instance based on its `usage_id` in a course, for a given request/user

lms/envs/common.py

@@ -1794,6 +1794,9 @@ INSTALLED_APPS = (
     'djcelery',
     'south',
 
+    # Common views
+    'openedx.core.djangoapps.common_views',
+
     # History tables
     'simple_history',
 

lms/urls.py

@@ -307,7 +307,7 @@ if settings.COURSEWARE_ENABLED:
         # xblock Resource URL
         url(
             r'xblock/resource/(?P<block_type>[^/]+)/(?P<uri>.*)$',
-            'courseware.module_render.xblock_resource',
+            'openedx.core.djangoapps.common_views.xblock.xblock_resource',
             name='xblock_resource_url',
         ),
 

cms/djangoapps/contentstore/views/xblock.py → openedx/core/djangoapps/common_views/xblock.py

 """
-Views dedicated to rendering xblocks.
+Common views dedicated to rendering xblocks.
 """
 from __future__ import absolute_import
 
 import logging
 import mimetypes
+import pkg_resources
 
 from xblock.core import XBlock
 
@@ -21,7 +22,13 @@ def xblock_resource(request, block_type, uri):  # pylint: disable=unused-argumen
     """
     try:
         xblock_class = XBlock.load_class(block_type, select=settings.XBLOCK_SELECT_FUNCTION)
-        content = xblock_class.open_local_resource(uri)
+        # Note: in debug mode, return any file rather than going through the XBlock which
+        # will only return public files. This allows unbundled files to be served up
+        # during development.
+        if settings.DEBUG:
+            content = pkg_resources.resource_stream(xblock_class.__module__, uri)
+        else:
+            content = xblock_class.open_local_resource(uri)
     except IOError:
         log.info('Failed to load xblock resource', exc_info=True)
         raise Http404