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feat: [FC-7879] add signal handler to save assignment dates to Conten…#347

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raccoongang:rg/axm-dates-listen-to-course-published-and-process
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feat: [FC-7879] add signal handler to save assignment dates to Conten…#347
kyrylo-kh wants to merge 2 commits intoopenedx:masterfrom
raccoongang:rg/axm-dates-listen-to-course-published-and-process

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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 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@kyrylo-kh the branch is reporting as out of date, but I don't have the ability to pull in the latest from base.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.

edx_when/api.py Outdated
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.

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Do you mean it can confuse having subsection_name in model for different type of content?
We wrote description of this in argument:

        assignments: List of Assignment instances. Assignments with missing date or
            title are skipped (with a warning). Use Assignment.subsection_name for
            the containing subsection when available; it is stored separately from
            assignment_title.

edx_when/api.py Outdated
course_key_str
)
continue
models.ContentDate.objects.update_or_create(
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There's no transactional boundary set here.

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@kyrylo-kh kyrylo-kh force-pushed the rg/axm-dates-listen-to-course-published-and-process branch 5 times, most recently from 900b00c to 7c7451a Compare February 16, 2026 19:46
@mphilbrick211 mphilbrick211 moved this from Waiting on Author to In Eng Review in Contributions Feb 25, 2026
@kyrylo-kh kyrylo-kh force-pushed the rg/axm-dates-listen-to-course-published-and-process branch from 7c7451a to 906ef14 Compare March 2, 2026 19:31
@kyrylo-kh kyrylo-kh force-pushed the rg/axm-dates-listen-to-course-published-and-process branch from bd16f7c to f1229a9 Compare March 12, 2026 00:32
@kyrylo-kh kyrylo-kh force-pushed the rg/axm-dates-listen-to-course-published-and-process branch from f1229a9 to 9e50d46 Compare March 12, 2026 00:35
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