# django.core.exceptions.FieldError: Cannot resolve keyword 'related_field' into field. Choices are: id, name.

- **ID:** `python/django-orm-lazy-load-error`
- **Domain:** python
- **Category:** data_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

Trying to filter on a related model field without proper double underscore syntax.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.x | active | — | — |

## Workarounds

1. **** (95% success)
   ```
   Use correct syntax: Model.objects.filter(related_model__field='value')
   ```

## Dead Ends

- **** — Django requires double underscore for traversing relations. (90% fail)
- **** — Doesn't allow database-level filtering, only Python-side. (50% fail)