1. from django.db import migrations, models
    
  2. 
    
  3. 
    
  4. class Migration(migrations.Migration):
    
  5.     replaces = [
    
  6.         ("migrations", "0001_initial"),
    
  7.         ("migrations", "0002_second"),
    
  8.     ]
    
  9. 
    
  10.     operations = [
    
  11.         migrations.CreateModel(
    
  12.             "Author",
    
  13.             [
    
  14.                 ("id", models.AutoField(primary_key=True)),
    
  15.                 ("name", models.CharField(max_length=255)),
    
  16.                 ("slug", models.SlugField(null=True)),
    
  17.                 ("age", models.IntegerField(default=0)),
    
  18.                 ("rating", models.IntegerField(default=0)),
    
  19.             ],
    
  20.         ),
    
  21.         migrations.CreateModel(
    
  22.             "Book",
    
  23.             [
    
  24.                 ("id", models.AutoField(primary_key=True)),
    
  25.                 (
    
  26.                     "author",
    
  27.                     models.ForeignKey("migrations.Author", models.SET_NULL, null=True),
    
  28.                 ),
    
  29.             ],
    
  30.         ),
    
  31.     ]