class Person(models.Model):
pass
class Book(models.Model):
author = models.ForeignKey(Person)
class Person(models.Model):
pass
class Book(models.Model):
author = models.ForeignKey(Person)
class Reviewer(models.Model):
pass
class Review(models.Model):
book = models.ForeignKey(Book)
class Book(models.Model):
pass
class Reviewer(models.Model):
pass
class Review(models.Model):
reviewer = models.ForeignKey(Reviewer)
book = models.ForeignKey(Book)
$ python manage.py squashmigrations test_app 0003
$ python manage.py migrate test_app
Applying test_app.0001_squashed_0003_auto_20160607_1120...Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/home/sergey/dev/django/django/core/management/__init__.py", line 354, in execute_from_command_line
utility.execute()
File "/home/sergey/dev/django/django/core/management/__init__.py", line 346, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/sergey/dev/django/django/core/management/base.py", line 394, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/sergey/dev/django/django/core/management/base.py", line 445, in execute
output = self.handle(*args, **options)
File "/home/sergey/dev/django/django/core/management/commands/migrate.py", line 222, in handle
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
File "/home/sergey/dev/django/django/db/migrations/executor.py", line 110, in migrate
self.apply_migration(states[migration], migration, fake=fake, fake_initial=fake_initial)
File "/home/sergey/dev/django/django/db/migrations/executor.py", line 148, in apply_migration
state = migration.apply(state, schema_editor)
File "/home/sergey/dev/django/django/db/migrations/migration.py", line 115, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/home/sergey/dev/django/django/db/migrations/operations/models.py", line 59, in database_forwards
schema_editor.create_model(model)
File "/home/sergey/dev/django/django/db/backends/base/schema.py", line 236, in create_model
definition, extra_params = self.column_sql(model, field)
File "/home/sergey/dev/django/django/db/backends/base/schema.py", line 135, in column_sql
db_params = field.db_parameters(connection=self.connection)
File "/home/sergey/dev/django/django/db/models/fields/related.py", line 2010, in db_parameters
return {"type": self.db_type(connection), "check": []}
File "/home/sergey/dev/django/django/db/models/fields/related.py", line 2001, in db_type
rel_field = self.related_field
File "/home/sergey/dev/django/django/db/models/fields/related.py", line 1904, in related_field
return self.foreign_related_fields[0]
File "/home/sergey/dev/django/django/db/models/fields/related.py", line 1638, in foreign_related_fields
return tuple(rhs_field for lhs_field, rhs_field in self.related_fields if rhs_field)
File "/home/sergey/dev/django/django/db/models/fields/related.py", line 1625, in related_fields
self._related_fields = self.resolve_related_fields()
File "/home/sergey/dev/django/django/db/models/fields/related.py", line 1610, in resolve_related_fields
raise ValueError('Related model %r cannot be resolved' % self.rel.to)
ValueError: Related model u'test_app.Person' cannot be resolved
PR