(self, instance, value, key=MISSING)
| 300 | return MISSING |
| 301 | |
| 302 | def set_cache(self, instance, value, key=MISSING): |
| 303 | old_value = self.get_cache(instance, key) |
| 304 | |
| 305 | if value == old_value: |
| 306 | return |
| 307 | |
| 308 | if isinstance(value, Q_): |
| 309 | value = copy.copy(value) |
| 310 | |
| 311 | self.value[instance] = value |
| 312 | |
| 313 | getattr(instance, self.name + '_changed').emit(value, old_value) |
| 314 | |
| 315 | |
| 316 | class DictFeat(Feat): |