def get_preview_fragment(request, descriptor, context):
"""
Returns the HTML returned by the XModule's student_view or author_view (if available),
specified by the descriptor and idx.
"""
module = _load_preview_module(request, descriptor)
preview_view = AUTHOR_VIEW if has_author_view(module) else STUDENT_VIEW
try:
fragment = module.render(preview_view, context)
except Exception as exc: # pylint: disable=broad-except
log.warning("Unable to render %s for %r", preview_view, module, exc_info=True)
fragment = Fragment(render_to_string('html_error.html', {'message': str(exc)}))
return fragment
def get_preview_fragment(request, descriptor, context):
"""
Returns the HTML returned by the XModule's student_view or author_view (if available),
specified by the descriptor and idx.
"""
module = _load_preview_module(request, descriptor)
preview_view = AUTHOR_VIEW if has_author_view(module) else STUDENT_VIEW
try:
fragment = module.render(preview_view, context)
except Exception as exc: # pylint: disable=broad-except
log.warning(u"Unable to render %s for %r", preview_view, module, exc_info=True)
fragment = Fragment(render_to_string('html_error.html', {'message': str(exc)}))
return fragment
def _load_preview_module(request, descriptor):
"""
Return a preview XModule instantiated from the supplied descriptor. Will use mutable fields
if XModule supports an author_view. Otherwise, will use immutable fields and student_view.
request: The active django request
descriptor: An XModuleDescriptor
"""
student_data = KvsFieldData(SessionKeyValueStore(request))
if has_author_view(descriptor):
wrapper = partial(CmsFieldData, student_data=student_data)
else:
wrapper = partial(LmsFieldData, student_data=student_data)
# wrap the _field_data upfront to pass to _preview_module_system
wrapped_field_data = wrapper(descriptor._field_data) # pylint: disable=protected-access
preview_runtime = _preview_module_system(request, descriptor, wrapped_field_data)
descriptor.bind_for_student(preview_runtime, request.user.id, [wrapper])
return descriptor
def _load_preview_module(request, descriptor):
"""
Return a preview XModule instantiated from the supplied descriptor. Will use mutable fields
if XModule supports an author_view. Otherwise, will use immutable fields and student_view.
request: The active django request
descriptor: An XModuleDescriptor
"""
student_data = KvsFieldData(SessionKeyValueStore(request))
if has_author_view(descriptor):
wrapper = partial(CmsFieldData, student_data=student_data)
else:
wrapper = partial(LmsFieldData, student_data=student_data)
# wrap the _field_data upfront to pass to _preview_module_system
wrapped_field_data = wrapper(descriptor._field_data) # pylint: disable=protected-access
preview_runtime = _preview_module_system(request, descriptor,
wrapped_field_data)
descriptor.bind_for_student(preview_runtime, request.user.id, [wrapper])
return descriptor