site_tps/vote/models.py

from django.db import models
from django.core import validators
from content.models import Content
from django.contrib.auth.models import Group, User


class Poll(models.Model):
    voters_group = models.ForeignKey(Group, on_delete=models.CASCADE)
    contents = models.ManyToManyField(Content)
    title = models.CharField(max_length=1024)


class Vote(models.Model):
    votant = models.ForeignKey(User, on_delete=models.CASCADE)
    content = models.ForeignKey(Content, on_delete=models.CASCADE)
    poll = models.ForeignKey(Poll, on_delete=models.CASCADE)
    vote = models.IntegerField(
        validators=[
            validators.MaxValueValidator(5),
            validators.MinValueValidator(0)
        ]
    )