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Greptile Summary

This PR filters the redirection forms count to only include the current year by introducing a january_first() utility and applying it as a filter in both the Cause.redirections_count model property and the NgoRedirectionsView query annotation.

• Bug in model property: Cause.redirections_count in ngos.py passes the datetime returned by january_first() directly to filter(), which expects a Q object or keyword argument — this will raise a TypeError at runtime. The view in redirections.py correctly uses Q(date_created__gte=january_first()).
• The january_first() utility in editions/calendar.py works correctly but is missing a return type annotation, unlike other functions in the same module.
• Note: The existing DonorCurrentYearManager uses date_created__year=timezone.now().year for year filtering, while this PR uses date_created__gte=january_first(). Both achieve similar results but with slightly different semantics (__year matches the exact year, __gte includes everything from Jan 1 onward).

Confidence Score: 1/5

• This PR contains a runtime error in the model property that will break the redirections_count feature wherever the property is accessed directly.
• The Cause.redirections_count property passes a bare datetime to QuerySet.filter() instead of wrapping it in a Q object with a field lookup, which will cause a TypeError. The view-level change is correct, but the model-level change is broken.
• backend/donations/models/ngos.py has a critical bug on line 583 that needs to be fixed before merging.

Flowchart

flowchart TD
    A["january_first()"] -->|"returns datetime"| B["Jan 1st of current year"]
    B --> C{"Used in view (redirections.py)"}
    B --> D{"Used in model (ngos.py)"}
    C -->|"Q(date_created__gte=datetime)"| E["Count annotation with filter ✅"]
    D -->|"filter(datetime) — no field lookup"| F["TypeError at runtime ❌"]
    E --> G["NgoRedirectionsView causes list"]
    F --> H["Cause.redirections_count property"]

_{Last reviewed commit: 3fa8417}