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[South] Create intermediate migration in South

/ Published in: Django
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How to create an custom migration in South

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  1. $ ./manage.py datamigration app name
  2.  
  3. #In new migration
  4. #Example: app actual prefences.
  5. class Migration(DataMigration):
  6.     def forwards(self, orm):
  7.         for user in orm['profiles.User'].objects.all():
  8.             orm.Preferences.objects.create(user=user)
  9.  
  10.     def backwards(self, orm):
  11.         orm.Preferences.objects.all().delete()

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