As far as I know, there's no way to temporarily change the transaction isolation level in Django for an existing database connection(s).
However, you could setup another database connection(s) that mirrors your default database connection(s) but sets the transaction isolation level.
E.g. in your settings.py:
DATABASES = {
'default': {
'NAME': 'app_data',
'ENGINE': 'django.db.backends.postgresql',
'USER': 'postgres_user',
'PASSWORD': 's3krit',
},
'serializable': {
'NAME': 'app_data',
'ENGINE': 'django.db.backends.postgresql',
'USER': 'postgres_user',
'PASSWORD': 's3krit',
'OPTIONS': {
'isolation_level': psycopg2.extensions.ISOLATION_LEVEL_SERIALIZABLE,
},
},
}
To use the serializable transaction level, you could:
Use the using()
QuerySet method
e.g. User.objects.using('serializable').all
Add a custom manager that specifies the database connection with the transaction isolation level
class SerializableUserManager(models.Manager):
def get_queryset(self):
return super(SerializableUserManager, self).get_queryset().using('serializable')
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