def render(self, block, view_name, context=None):
"""
Render a specific view of an XBlock.
"""
# We only need to override this method because some XBlocks in the
# edx-platform codebase use methods like add_webpack_to_fragment()
# which create relative URLs (/static/studio/bundles/webpack-foo.js).
# We want all resource URLs to be absolute, such as is done when
# local_resource_url() is used.
fragment = super(XBlockRuntime, self).render(block, view_name, context)
needs_fix = False
for resource in fragment.resources:
if resource.kind == 'url' and resource.data.startswith('/'):
needs_fix = True
break
if needs_fix:
log.warning(
"XBlock %s returned relative resource URLs, which are deprecated",
block.scope_ids.usage_id)
# The Fragment API is mostly immutable, so changing a resource requires this:
frag_data = fragment.to_dict()
for resource in frag_data['resources']:
if resource['kind'] == 'url' and resource['data'].startswith(
'/'):
log.debug("-> Relative resource URL: %s", resource['data'])
resource['data'] = get_xblock_app_config(
).get_site_root_url() + resource['data']
fragment = Fragment.from_dict(frag_data)
return fragment
def render(self, block, view_name, context=None):
"""
Render a specific view of an XBlock.
"""
# Users who aren't logged in are not allowed to view any views other
# than public_view. They may call any handlers though.
if (self.user is None or self.user.is_anonymous) and view_name != 'public_view':
raise PermissionDenied
# We also need to override this method because some XBlocks in the
# edx-platform codebase use methods like add_webpack_to_fragment()
# which create relative URLs (/static/studio/bundles/webpack-foo.js).
# We want all resource URLs to be absolute, such as is done when
# local_resource_url() is used.
fragment = super(XBlockRuntime, self).render(block, view_name, context)
needs_fix = False
for resource in fragment.resources:
if resource.kind == 'url' and resource.data.startswith('/'):
needs_fix = True
break
if needs_fix:
log.warning("XBlock %s returned relative resource URLs, which are deprecated", block.scope_ids.usage_id)
# The Fragment API is mostly immutable, so changing a resource requires this:
frag_data = fragment.to_dict()
for resource in frag_data['resources']:
if resource['kind'] == 'url' and resource['data'].startswith('/'):
log.debug("-> Relative resource URL: %s", resource['data'])
resource['data'] = get_xblock_app_config().get_site_root_url() + resource['data']
fragment = Fragment.from_dict(frag_data)
# Apply any required transforms to the fragment.
# We could move to doing this in wrap_xblock() and/or use an array of
# wrapper methods like the ConfigurableFragmentWrapper mixin does.
fragment = wrap_fragment(fragment, self.transform_static_paths_to_urls(block, fragment.content))
return fragment
def test_from_dict(self):
"""
Tests the from_dict method.
"""
test_dict = {
'content': TEST_HTML,
'resources': EXPECTED_RESOURCES,
'js_init_fn': TEST_JS_INIT_FN,
'js_init_version': EXPECTED_JS_INIT_VERSION,
'json_init_args': TEST_JSON_INIT_ARGS,
}
fragment = Fragment.from_dict(test_dict)
self.validate_fragment(fragment)