88 lines
3.4 KiB
Python
88 lines
3.4 KiB
Python
"""
|
|
API entry point to the course_blocks app with top-level
|
|
get_course_blocks function.
|
|
"""
|
|
from django.conf import settings
|
|
|
|
from openedx.core.djangoapps.content.block_structure.api import get_block_structure_manager
|
|
from openedx.core.djangoapps.content.block_structure.transformers import BlockStructureTransformers
|
|
|
|
from .transformers import library_content, start_date, user_partitions, visibility, load_override_data
|
|
from .usage_info import CourseUsageInfo
|
|
|
|
INDIVIDUAL_STUDENT_OVERRIDE_PROVIDER = (
|
|
'lms.djangoapps.courseware.student_field_overrides.IndividualStudentOverrideProvider'
|
|
)
|
|
|
|
|
|
def has_individual_student_override_provider():
|
|
"""
|
|
check if FIELD_OVERRIDE_PROVIDERS has class
|
|
`lms.djangoapps.courseware.student_field_overrides.IndividualStudentOverrideProvider`
|
|
"""
|
|
return INDIVIDUAL_STUDENT_OVERRIDE_PROVIDER in getattr(settings, 'FIELD_OVERRIDE_PROVIDERS', ())
|
|
|
|
|
|
def get_course_block_access_transformers():
|
|
"""
|
|
Default list of transformers for manipulating course block structures
|
|
based on the user's access to the course blocks.
|
|
"""
|
|
course_block_access_transformers = [
|
|
library_content.ContentLibraryTransformer(),
|
|
start_date.StartDateTransformer(),
|
|
user_partitions.UserPartitionTransformer(),
|
|
visibility.VisibilityTransformer(),
|
|
]
|
|
if has_individual_student_override_provider():
|
|
course_block_access_transformers += [load_override_data.OverrideDataTransformer()]
|
|
|
|
return course_block_access_transformers
|
|
|
|
|
|
def get_course_blocks(
|
|
user,
|
|
starting_block_usage_key,
|
|
transformers=None,
|
|
collected_block_structure=None,
|
|
):
|
|
"""
|
|
A higher order function implemented on top of the
|
|
block_structure.get_blocks function returning a transformed block
|
|
structure for the given user starting at starting_block_usage_key.
|
|
|
|
Arguments:
|
|
user (django.contrib.auth.models.User) - User object for
|
|
which the block structure is to be transformed.
|
|
|
|
starting_block_usage_key (UsageKey) - Specifies the starting block
|
|
of the block structure that is to be transformed.
|
|
|
|
transformers (BlockStructureTransformers) - A collection of
|
|
transformers whose transform methods are to be called.
|
|
If None, get_course_block_access_transformers() is used.
|
|
|
|
collected_block_structure (BlockStructureBlockData) - A
|
|
block structure retrieved from a prior call to
|
|
BlockStructureManager.get_collected. Can be optionally
|
|
provided if already available, for optimization.
|
|
|
|
Returns:
|
|
BlockStructureBlockData - A transformed block structure,
|
|
starting at starting_block_usage_key, that has undergone the
|
|
transform methods for the given user and the course
|
|
associated with the block structure. If using the default
|
|
transformers, the transformed block structure will be
|
|
exactly equivalent to the blocks that the given user has
|
|
access.
|
|
"""
|
|
if not transformers:
|
|
transformers = BlockStructureTransformers(get_course_block_access_transformers())
|
|
transformers.usage_info = CourseUsageInfo(starting_block_usage_key.course_key, user)
|
|
|
|
return get_block_structure_manager(starting_block_usage_key.course_key).get_transformed(
|
|
transformers,
|
|
starting_block_usage_key,
|
|
collected_block_structure,
|
|
)
|