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NOTE: Depends on #343

Description

Adds a new signal handler to support saving assignment due dates to the ContentDate model in the edx-when service.

Key Changes:

  • Introduces the _Assignment data class to standardize assignment metadata (title, date, block key, type).

  • Implements update_or_create_assignments_due_dates() to:

    • Create or update ContentDate entries with assignment titles, dates, and metadata.
    • Store related information like block_type, subsection_name, and course_name.
    • Ensure DatePolicy entries are reused or created as needed.
  • Adds logging and input validation to handle incomplete or invalid assignment data gracefully.

Testing:

Includes a full test suite verifying:

  • New entries are inserted correctly.

  • Existing entries are updated when data changes.

  • Graceful handling of:

    • Assignments with missing title or date.
    • Multiple assignments at once.
    • Failures during DatePolicy creation.

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@e0d
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e0d commented Feb 10, 2026

@kyrylo-kh the branch is reporting as out of date, but I don't have the ability to pull in the latest from base. Can you do so an push it up.

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e0d commented Feb 10, 2026

@kyrylo-kh sorry, there also seem to be a bunch of failing tests. Perhaps a rebase will also fix this, but please have a look.

block_type=assignment.assignment_type,
defaults={
'policy': models.DatePolicy.objects.get_or_create(abs_date=assignment.date)[0],
'assignment_title': assignment.title,
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This section is a little strange to me. assignment.title is used twice and is unlikely to be the reliably the subsection_name.

course_key_str
)
continue
models.ContentDate.objects.update_or_create(
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There's no transactional boundary set here.

raise TypeError("block_key must be a UsageKey object")


def update_or_create_assignments_due_dates(course_key, assignments: list[_Assignment]):
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I don't think that _Assignment needs to be private, but, if it is, it shouldn't be in the API signature.

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Also, should have complete docstring for this function.

API for retrieving and setting dates.
"""

from dataclasses import dataclass
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Moving these above logging messes up the import order.

'block-v1:edX+DemoX+Demo_Course+type@sequential+block@test1'
)
self.due_date = datetime(2024, 12, 31, 23, 59, 59, tzinfo=timezone.utc)
self.assignments = [
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If the data class is not private, there's no need to use a Mock, see comment below.

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4 participants