medium_django_db_optimization_model.py

class Author(models.Model):
    name = models.CharField(max_length=200)
    email = models.EmailField()

    def __str__(self):
        return self.name
 
class Blog(models.Model):
    name = models.CharField(max_length=100)
    tagline = models.TextField()

    def __str__(self):
        return self.name

class Entry(models.Model):
    blog = models.ForeignKey(Blog, on_delete=models.CASCADE)
    headline = models.CharField(max_length=255)
    body_text = models.TextField(blank=True)
    likes = models.IntegerField(blank=True, default=0)
    authors = models.ManyToManyField(Author, blank=True)
    
    class Meta:
        default_related_name = 'entries'

    def __str__(self):
        return self.headline