def _filter_disabled_blocks(all_blocks):
"""
Filter out disabled xblocks from the provided list of xblock names.
"""
disabled_block_names = [block.name for block in disabled_xblocks()]
return [
block_name for block_name in all_blocks
if block_name not in disabled_block_names
]
def fetch_disabled_xblock_types():
"""
Get the disabled xblock names, using the request_cache if possible to avoid hitting
a database every time the list is needed.
"""
# If the import could not be loaded, return an empty list.
if disabled_xblocks is None:
return []
if 'disabled_xblock_types' not in request_cache.data:
request_cache.data['disabled_xblock_types'] = [block.name for block in disabled_xblocks()]
return request_cache.data['disabled_xblock_types']
def get_component_templates(courselike, library=False): # lint-amnesty, pylint: disable=too-many-statements
"""
Returns the applicable component templates that can be used by the specified course or library.
"""
def create_template_dict(name,
category,
support_level,
boilerplate_name=None,
tab="common",
hinted=False):
"""
Creates a component template dict.
Parameters
display_name: the user-visible name of the component
category: the type of component (problem, html, etc.)
support_level: the support level of this component
boilerplate_name: name of boilerplate for filling in default values. May be None.
hinted: True if hinted problem else False
tab: common(default)/advanced, which tab it goes in
"""
return {
"display_name": name,
"category": category,
"boilerplate_name": boilerplate_name,
"hinted": hinted,
"tab": tab,
"support_level": support_level
}
def component_support_level(editable_types, name, template=None):
"""
Returns the support level for the given xblock name/template combination.
Args:
editable_types: a QuerySet of xblocks with their support levels
name: the name of the xblock
template: optional template for the xblock
Returns:
If XBlockStudioConfigurationFlag is enabled, returns the support level
(see XBlockStudioConfiguration) or False if this xblock name/template combination
has no Studio support at all. If XBlockStudioConfigurationFlag is disabled,
simply returns True.
"""
# If the Studio support feature is disabled, return True for all.
if not XBlockStudioConfigurationFlag.is_enabled():
return True
if template is None:
template = ""
extension_index = template.rfind(".yaml")
if extension_index >= 0:
template = template[0:extension_index]
for block in editable_types:
if block.name == name and block.template == template:
return block.support_level
return False
def create_support_legend_dict():
"""
Returns a dict of settings information for the display of the support level legend.
"""
return {
"show_legend":
XBlockStudioConfigurationFlag.is_enabled(),
"allow_unsupported_xblocks":
allow_unsupported,
"documentation_label":
_("{platform_name} Support Levels:").format(
platform_name=settings.PLATFORM_NAME)
}
component_display_names = {
'discussion': _("Discussion"),
'html': _("HTML"),
'problem': _("Problem"),
'video': _("Video"),
'openassessment': _("Open Response")
}
component_templates = []
categories = set()
# The component_templates array is in the order of "advanced" (if present), followed
# by the components in the order listed in COMPONENT_TYPES.
component_types = COMPONENT_TYPES[:]
# Libraries do not support discussions and openassessment
component_not_supported_by_library = ['discussion', 'openassessment']
if library:
component_types = [
component for component in component_types
if component not in set(component_not_supported_by_library)
]
component_types = _filter_disabled_blocks(component_types)
# Content Libraries currently don't allow opting in to unsupported xblocks/problem types.
allow_unsupported = getattr(courselike, "allow_unsupported_xblocks", False)
for category in component_types: # lint-amnesty, pylint: disable=too-many-nested-blocks
authorable_variations = authorable_xblocks(
allow_unsupported=allow_unsupported, name=category)
support_level_without_template = component_support_level(
authorable_variations, category)
templates_for_category = []
component_class = _load_mixed_class(category)
if support_level_without_template:
# add the default template with localized display name
# TODO: Once mixins are defined per-application, rather than per-runtime,
# this should use a cms mixed-in class. (cpennington)
template_id = None
display_name = xblock_type_display_name(
category, _('Blank')) # this is the Blank Advanced problem
# The first template that is given should be Blank Assessment Template
if category == 'openassessment':
display_name = _("Blank Open Response Assessment")
template_id = "blank-assessment"
templates_for_category.append(
create_template_dict(display_name, category,
support_level_without_template,
template_id, 'advanced'))
categories.add(category)
# add boilerplates
if hasattr(component_class, 'templates'):
for template in component_class.templates():
filter_templates = getattr(component_class, 'filter_templates',
None)
if not filter_templates or filter_templates(
template, courselike):
template_id = template.get('template_id')
support_level_with_template = component_support_level(
authorable_variations, category, template_id)
if support_level_with_template:
# Tab can be 'common' 'advanced'
# Default setting is common/advanced depending on the presence of markdown
tab = 'common'
if template['metadata'].get('markdown') is None:
tab = 'advanced'
hinted = template.get('hinted', False)
templates_for_category.append(
create_template_dict(
_(template['metadata'].get('display_name')), # lint-amnesty, pylint: disable=translation-of-non-string
category,
support_level_with_template,
template_id,
tab,
hinted,
))
# Add any advanced problem types. Note that these are different xblocks being stored as Advanced Problems,
# currently not supported in libraries .
if category == 'problem' and not library:
disabled_block_names = [block.name for block in disabled_xblocks()]
advanced_problem_types = [
advanced_problem_type
for advanced_problem_type in ADVANCED_PROBLEM_TYPES if
advanced_problem_type['component'] not in disabled_block_names
]
for advanced_problem_type in advanced_problem_types:
component = advanced_problem_type['component']
boilerplate_name = advanced_problem_type['boilerplate_name']
authorable_advanced_component_variations = authorable_xblocks(
allow_unsupported=allow_unsupported, name=component)
advanced_component_support_level = component_support_level(
authorable_advanced_component_variations, component,
boilerplate_name)
if advanced_component_support_level:
try:
component_display_name = xblock_type_display_name(
component)
except PluginMissingError:
log.warning(
'Unable to load xblock type %s to read display_name',
component,
exc_info=True)
else:
templates_for_category.append(
create_template_dict(
component_display_name, component,
advanced_component_support_level,
boilerplate_name, 'advanced'))
categories.add(component)
component_templates.append({
"type":
category,
"templates":
templates_for_category,
"display_name":
component_display_names[category],
"support_legend":
create_support_legend_dict()
})
# Libraries do not support advanced components at this time.
if library:
return component_templates
# Check if there are any advanced modules specified in the course policy.
# These modules should be specified as a list of strings, where the strings
# are the names of the modules in ADVANCED_COMPONENT_TYPES that should be
# enabled for the course.
course_advanced_keys = courselike.advanced_modules
advanced_component_templates = {
"type": "advanced",
"templates": [],
"display_name": _("Advanced"),
"support_legend": create_support_legend_dict()
}
advanced_component_types = _advanced_component_types(allow_unsupported)
# Set component types according to course policy file
if isinstance(course_advanced_keys, list):
for category in course_advanced_keys:
if category in advanced_component_types.keys(
) and category not in categories:
# boilerplates not supported for advanced components
try:
component_display_name = xblock_type_display_name(
category, default_display_name=category)
advanced_component_templates['templates'].append(
create_template_dict(
component_display_name, category,
advanced_component_types[category]))
categories.add(category)
except PluginMissingError:
# dhm: I got this once but it can happen any time the
# course author configures an advanced component which does
# not exist on the server. This code here merely
# prevents any authors from trying to instantiate the
# non-existent component type by not showing it in the menu
log.warning(
"Advanced component %s does not exist. It will not be added to the Studio new component menu.",
category)
else:
log.error("Improper format for course advanced keys! %s",
course_advanced_keys)
if advanced_component_templates['templates']:
component_templates.insert(0, advanced_component_templates)
return component_templates