class Partit(models.Model):
    class Meta:
        unique_together = ["local","visitant","lliga"]
    local = models.ForeignKey(Equip,on_delete=models.CASCADE,
                    related_name="partits_local")
    visitant = models.ForeignKey(Equip,on_delete=models.CASCADE,
                    related_name="partits_visitant")
    lliga = models.ForeignKey(Lliga,on_delete=models.CASCADE)
    detalls = models.TextField(null=True,blank=True)
    inici = models.DateTimeField(null=True,blank=True)
    def __str__(self):
        return "{} - {}".format(self.local,self.visitant)
    def gols_local(self):
        return self.event_set.filter(
            tipus=Event.EventType.GOL,equip=self.local).count()
    def gols_visitant(self):
        return self.event_set.filter(
            tipus=Event.EventType.GOL,equip=self.visitant).count()