Модель проекта и правильность указания связи

def Question(models.Model):
    text = models.TextField()
    
def Answer(models.Model):
    text = models.CharField(max_lenght=50)
    question = models.ForeignKey(Question)

class TypeNet(models.Model):
    tnet = models.CharField('Тип сети', max_length=20) 
 
def __str__(self):
    return self.tnet
 
class GeoPoints(models.Model):
    gpNameNumber = models.CharField(, max_length=255, null=False)
    gpCatNumber = models.CharField(, max_length=150, blank=True)
    gpClass = models.CharField(, max_length=50)
    gpRank = models.CharField(, max_length=50)
    gpH_Sign = models.FloatField()
    gpSystem_H = models.CharField(, max_length=150)
    gpX_GosMsk = models.FloatField()
    gpY_GosMsk = models.FloatField()
    gpH = models.FloatField('Высота', db_index=True)
    gpDescription = models.TextField()
    gpUrlSource = models.URLField()
    gpImage = models.ImageField()
    tnet_geopoints = models.ForeignKey(TypeNet, on_delete=models.CASCADE)
 
    gp_geom = models.PointField(srid=4326)
 
    def __str__(self):
        return self.gpNameNumber

on_delete=models.CASCADE

 class test(models.Model):
    STATUS_CHOICES = (
        ('draft', 'Draft'),
        ('published', 'Published'),
    )

from django.contrib.gis.db import models
 
 
 
class GeoPoints(models.Model):
    gpCatNumber = models.CharField()
    gpNameNumber = models.CharField()
    gpClass = models.CharField()
    gpRank = models.CharField()
    gpH_Sign = models.FloatField()
    gpSystem_H = models.CharField()
    gpX_GosMsk = models.FloatField()
    gpY_GosMsk = models.FloatField()
    gpH = models.FloatField()
    gpDescription = models.TextField()
    gpImage = models.ImageField()
    gp_geom = models.PointField()
 
    def __str__(self):
        return self.gpNameNumber
 
 
class TypeNet(models.Model):
    tnet_of_geopoints = models.ForeignKey(GeoPoints, on_delete=models.DO_NOTHING)
    tnet = models.CharField()
 
    def __str__(self):
        return self.tnet