foerderbarometer/input/models.py

from django.db import models


class Volonteer(models.Model):
    realname = models.CharField(max_length=200, null=True)
    email = models.CharField(max_length=200, null=True)
    username = models.CharField(max_length=200, null=True)

    class Meta:
        abstract = True

class Project(Volonteer):
    name = models.CharField(max_length=200)
    start = models.DateTimeField('start date')
    # contact = models.ForeignKey(Volonteer, on_delete = models.CASCADE, null = True)

    def __str__(self):
        return self.name