feat: 누락된 후원사 모델의 __str__ 메소드 추가

Author: MU-Software

app/event/sponsor/models.py

@@ -18,6 +18,9 @@ class Meta:
         ordering = ["name"]
         constraints = [models.UniqueConstraint(fields=["event", "name"], name="uq__spsr__name")]
 
+    def __str__(self) -> str:
+        return f"{self.event.name} - {self.name}"
+
 
 class SponsorTier(BaseAbstractModel):
     event = models.ForeignKey(Event, on_delete=models.PROTECT)
@@ -33,6 +36,9 @@ class Meta:
             models.UniqueConstraint(fields=["event", "order"], name="uq__spsr_tier__order"),
         ]
 
+    def __str__(self) -> str:
+        return f"{self.event.name} - {self.name}"
+
     @functools.cached_property
     def active_sponsors(self) -> collections.abc.Iterable[Sponsor]:
         with contextlib.suppress(AttributeError):