Admin change list swallows unrelated AttributeErrors from callable display fields
|Reported by:||pjdelport||Owned by:||nobody|
|Cc:||Triage Stage:||Design decision needed|
|Has patch:||yes||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
If a callable display field on a model or model admin raises either an AttributeError, the interface currently captures the error, and renders the field as EMPTY_CHANGELIST_VALUE.
This behavior is surprising and confusing when the AttributeError originates in unrelated user code called by the display field: errors like third-party app bugs or missing settings get silenced, and the field's content simply becomes "(None)". There's no hint to a novice about what went wrong, or where to look next.
The code responsible for this is in templatetags/admin_list.py's items_for_result(), around lookup_field(). As far as i can tell, all the valid empty fields cases are covered by results of ObjectDoesNotExist or None, and not AttributeError: a missing attribute specified in list_display normally result in ImproperlyConfigured instead.
If there's no compelling reason to capture AttributeError like this, can it simply be removed from the exception list, and allowed to propagate?
Change History (5)
comment:1 Changed 22 months ago by pjdelport
- Has patch set
- Needs documentation unset
- Needs tests unset
- Patch needs improvement unset
comment:2 follow-up: ↓ 3 Changed 22 months ago by aaugustin
- Triage Stage changed from Unreviewed to Design decision needed
comment:4 Changed 22 months ago by aaugustin
- Resolution set to duplicate
- Status changed from new to closed