papiez_ipsum/src/papiezator/models.py

from django.db import models

DECIMAL_PLACES = 3


class PopeImage(models.Model):
    path = models.CharField(max_length=200)
    width = models.IntegerField()
    height = models.IntegerField()
    aspect_ratio = models.FloatField()
    pope = models.ForeignKey('Pope')

    def __str__(self):
        return self.path.split('/')[-1]


class Pope(models.Model):
    name = models.CharField(max_length=200)

    def __str__(self):
        return self.name


class PerfectPope(models.Model):
    aspect_ratio = models.FloatField()
    image = models.ForeignKey('PopeImage')
    pope = models.ForeignKey('Pope')

    def __str__(self):
        return str(self.aspect_ratio)