exclusion.py

class Exclusion(models.Model):
    """
    Models a period of time we wish to exclude a particular student from being included in some data report.
    """
    student = models.ForeignKey(Student, on_delete=models.CASCADE)
    start = models.DateField("exclusion_start")
    end = models.DateField("exclusion_end")
    active = models.BooleanField(verbose_name="Still send digital communications.", default=True)

    def __str__(self):
        return f"Exclusion for {self.student}"


class Report(models.Model):
    exclusion = models.OneToOneField(Exclusion, on_delete=models.CASCADE)
    name = models.CharField(blank=True, null=True, max_length=100)

    def __str__(self):
        return f"{self.name} report for {self.exclusion.student}"