old_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.16 on 2019-02-26 04:08
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  
  
  def set_data_relation(apps, schema_editor):
      Data = apps.get_model('flow', 'Data')
      Storage = apps.get_model('flow', 'Storage')
  
      for data in Data.objects.all():
          storage = Storage.objects.filter(data_migration_temporary=data).first()
          if storage:
              storage.data.add(data)
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('flow', '0028_add_data_location'),
      ]
  
      operations = [
          migrations.RenameField(
              model_name='storage',
              old_name='data',
              new_name='data_migration_temporary',
          ),
          migrations.AddField(
              model_name='storage',
              name='data',
              field=models.ManyToManyField(related_name='storages', to='flow.Data'),
          ),
          migrations.RunPython(set_data_relation),
          migrations.RemoveField(
              model_name='storage',
              name='data_migration_temporary',
          ),
      ]
  
new_contents: # -*- coding: utf-8 -*-
  # Generated by Django 1.11.16 on 2019-02-26 04:08
  from __future__ import unicode_literals
  
  from django.db import migrations, models
  
  
  def set_data_relation(apps, schema_editor):
      Storage = apps.get_model('flow', 'Storage')
  
      for storage in Storage.objects.all():
          storage.data.add(storage.data_migration_temporary)
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('flow', '0028_add_data_location'),
      ]
  
      operations = [
          migrations.RenameField(
              model_name='storage',
              old_name='data',
              new_name='data_migration_temporary',
          ),
          migrations.AddField(
              model_name='storage',
              name='data',
              field=models.ManyToManyField(related_name='storages', to='flow.Data'),
          ),
          migrations.RunPython(set_data_relation),
          migrations.RemoveField(
              model_name='storage',
              name='data_migration_temporary',
          ),
      ]
  
subject: Fix storage migration to process all storages