initial commit

env/lib/python3.12/site-packages/django/contrib/admin/formfields.py

@@ -0,0 +1,42 @@
+from django.core.exceptions import ValidationError
+from django.forms import NullBooleanField
+
+
+class StrictBooleanField(NullBooleanField):
+    """
+    forms.BooleanField coerces almost any truthy input to True. Delegate to
+    NullBooleanField's stricter parsing while still rejecting None values.
+    """
+
+    def to_python(self, value):
+        # The admin changelist search allows case-insensitivity.
+        try:
+            value = value.lower()
+        except AttributeError:
+            pass
+        value = super().to_python(value)
+        if value is None:
+            # Not translated, as this is currently not user-facing.
+            raise ValidationError("Invalid value.")
+        return value
+
+
+class StrictNullBooleanField(NullBooleanField):
+    """
+    forms.NullBooleanField doesn't distinguish explicit None values, so check
+    for that before delegating.
+    """
+
+    def to_python(self, value):
+        # The admin changelist search allows case-insensitivity.
+        try:
+            value = value.lower()
+        except AttributeError:
+            pass
+        if value in (None, "none"):
+            return None
+        value = super().to_python(value)
+        if value is None:
+            # Not translated, as this is currently not user-facing.
+            raise ValidationError("Invalid value.")
+        return value