1from typing import Any
 2
 3from plain import models
 4
 5
 6def coerce_key(key: Any) -> str:
 7    """
 8    Converts a flag key to a string for storage in the DB
 9    (special handling of model instances)
10    """
11    if isinstance(key, str):
12        return key
13
14    if isinstance(key, models.Model):
15        return f"{key._meta.package_label}.{key._meta.model_name}:{key.pk}"
16
17    return str(key)