Refactor NormalCase model to use age_days instead of age_years, update forms, filters, and templates accordingly for improved age handling

atlas/views.py

@@ -561,7 +561,13 @@ def toggle_case_normal(request, pk):
         # Create NormalCase
         from .models import NormalCase
 
-        NormalCase.objects.create(case=case, age_years=age, added_by=request.user)
+        # Convert inferred integer years -> canonical days (approx)
+        if age is not None:
+            age_days = NormalCase.to_days(age, NormalCase.AGE_UNIT_YEARS)
+        else:
+            age_days = None
+
+        NormalCase.objects.create(case=case, age_days=age_days, added_by=request.user)
 
     # Render the updated fragment
     # Recompute flags for the fragment render
@@ -633,8 +639,28 @@ def case_normal_form(request, pk):
     # Build form with initial values
     from .forms import NormalCaseForm
 
+    # Map inferred age (years) into age_value/unit defaults. If we inferred
+    # a fractional year (from birthdate), prefer months for ages < 2 years.
+    from .models import NormalCase
+    inferred_age_value = None
+    inferred_age_unit = None
+    try:
+        if age is not None:
+            # age currently holds integer years; for small ages prefer months
+            if age < 2:
+                inferred_age_value = int(age * 12)
+                inferred_age_unit = NormalCase.AGE_UNIT_MONTHS
+            else:
+                inferred_age_value = int(age)
+                inferred_age_unit = NormalCase.AGE_UNIT_YEARS
+    except Exception:
+        inferred_age_value = None
+        inferred_age_unit = None
+
+
     form = NormalCaseForm(initial={
-        "age_years": age,
+        "age_value": inferred_age_value,
+        "age_unit": inferred_age_unit,
         "examination": inferred_examination,
         "modality": inferred_modality,
     })