from django.db import models
from .region import Region

class District(models.Model):
    region = models.ForeignKey(
        Region,
        on_delete=models.CASCADE,
        related_name="districts"
    )
    name = models.CharField(max_length=100)

    class Meta:
        unique_together = ("region", "name")

    def __str__(self):
        return f"{self.name} — {self.region.name}"