Django South 迁移失败

Question

我正在尝试将一些数据映射到临时服务器上，但遇到了问题。

运行迁移时出现以下错误。

django.db.utils.DatabaseError: column "item_name_id" cannot be cast to type "pg_catalog.int4"

有什么办法可以解决这个问题吗？

Traceback (most recent call last):
  File "gecko/manage.py", line 11, in <module>
    execute_manager(settings)
  File "/app/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "/app/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/app/lib/python2.7/site-packages/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/app/lib/python2.7/site-packages/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "/app/lib/python2.7/site-packages/south/management/commands/migrate.py", line 105, in handle
    ignore_ghosts = ignore_ghosts,
  File "/app/lib/python2.7/site-packages/south/migration/__init__.py", line 191, in migrate_app
    success = migrator.migrate_many(target, workplan, database)
  File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 221, in migrate_many
    result = migrator.__class__.migrate_many(migrator, target, migrations, database)
  File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 292, in migrate_many
    result = self.migrate(migration, database)
  File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 125, in migrate
    result = self.run(migration)
  File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 99, in run
    return self.run_migration(migration)
  File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 81, in run_migration
    migration_function()
  File "/app/lib/python2.7/site-packages/south/migration/migrators.py", line 57, in <lambda>
    return (lambda: direction(orm))
  File "/app/gecko/quote/migrations/0015_auto__chg_field_order_item_name.py", line 14, in forwards
    db.alter_column('quote_order', 'item_name_id', self.gf('django.db.models.fields.related.ForeignKey')(to=orm['fleet.Group']))
  File "/app/lib/python2.7/site-packages/south/db/generic.py", line 382, in alter_column
    flatten(values),
  File "/app/lib/python2.7/site-packages/south/db/generic.py", line 150, in execute
    cursor.execute(sql, params)
  File "/app/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute
    return self.cursor.execute(query, args)
django.db.utils.DatabaseError: column "item_name_id" cannot be cast to type "pg_catalog.int4"

Answer 1

您的问题已标记为 mysql，但 Traceback 显示您正在使用 postgresql_psycopg2 后端。会不会是这个问题？

修复问题上的标签或在settings.py 中设置正确的DATABASE_ENGINE。