1. from django.db import migrations, models
    
  2. 
    
  3. 
    
  4. class Migration(migrations.Migration):
    
  5.     operations = [
    
  6.         migrations.CreateModel(
    
  7.             "Author",
    
  8.             [
    
  9.                 ("id", models.AutoField(primary_key=True)),
    
  10.                 ("name", models.CharField(max_length=255)),
    
  11.             ],
    
  12.         ),
    
  13.         migrations.CreateModel(
    
  14.             "Book",
    
  15.             [
    
  16.                 ("id", models.AutoField(primary_key=True)),
    
  17.                 (
    
  18.                     "author",
    
  19.                     models.ForeignKey("migrations.Author", models.SET_NULL, null=True),
    
  20.                 ),
    
  21.             ],
    
  22.         ),
    
  23.     ]