from django.db import models


class City(models.Model):
    name = models.CharField(max_length=150, unique=True, verbose_name="City")

    class Meta:
        verbose_name_plural = "Cities"

    def __str__(self):
        return '{}'.format(self.name)


class Location(models.Model):
    place = models.CharField(max_length=250, blank=True, null=False, verbose_name="Place")
    city = models.ForeignKey(City, on_delete=models.CASCADE, related_name='places', verbose_name="City")

    class Meta:
        verbose_name_plural = "Locations"
        unique_together = ('place', "city")
        ordering = ['city']


    def __str__(self):
        if self.place:
            return '{0}, {1}'.format(self.city, self.place)
        else:
            return '{}'.format(self.city)