[Sahil590]

Description

I followed the django filter docs to replace the existing hard coed search implementation. I was going to attempt adding htmx to have the search results appear as you type in a different PR.

I did use copilot for the tests and docstrings.
Fixes #798 (issue)

Type of change

• Documentation (non-breaking change that adds or improves the documentation)
• New feature (non-breaking change which adds functionality)
• Optimization (non-breaking, back-end change that speeds up the code)
• Technical work (non-breaking, change which is work as part of a new feature)
• Bug fix (non-breaking change which fixes an issue)
• Breaking change (whatever its nature)

Key checklist

• All tests pass (eg. python -m pytest)
• The documentation builds and looks OK (eg. mkdocs serve)
• Pre-commit hooks run successfully (eg. pre-commit run --all-files)

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added or an issue has been opened to tackle that in the future. (Indicate issue here: # (issue))

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[Copilot]

🟡 Changes recommended

The production requirements omit django-filter, so adding django_filters to INSTALLED_APPS causes Docker’s collectstatic step to fail with ModuleNotFoundError and blocks production image builds.

1 open issue

• Add django-filter to production requirements · New

What changed in this PR

Replaces the learning-resource page’s manual search filtering with django-filter, adopting the table-filtering approach requested in #798.

Changes:

• Moves cross-field search into LearningResourceFilter and integrates it with the table view.
• Renders the search field with crispy forms, preserves sorting on submission, and adds a reset link.
• Adds filtering and pagination tests, plus dependency and tooling configuration.

File	Description
tests/​main/​test_main_views.py	Tests the search form, empty results, sorting, and pagination.
tests/​main/​test_filters.py	Tests field matching, whitespace handling, and duplicate prevention.
requirements.txt	Adds django-filter to runtime dependencies.
pyproject.toml	Declares django-filter and its mypy override.
main/​views/​page_views.py	Integrates FilterView with the learning-resource table.
main/​templates/​main/​pages/​learning-resources.html	Renders the filter field and adds sorting preservation and reset.
main/​filters.py	Defines the cross-field learning-resource search filter.
doc-requirements.txt	Updates documentation dependencies to include django-filter.
direct_webapp/​settings/​settings.py	Registers django-filter in installed apps.
dev-requirements.txt	Updates development dependencies to include django-filter.
.pre-commit-config.yaml	Adds django-filter to the mypy hook environment.

_{Review effort: Balanced}