Question

我正在建立一个django模型来存储区域，比如美国，德国等。我为该表创建了区域名称。我有一个脚本从列表中填充数据库，如果有一个重复的区域名称IntegrityError按预期抛出，但然后发生另一个错误，我无法从错误消息中说出原因。有任何想法吗？谢谢！

django.db.utils.DatabaseError: current transaction is aborted, commands ignored until end of transaction block

型号：

class Region(models.Model):
    name = models.CharField(max_length=512, unique=True)

    def __unicode__(self):
        return self.name

填充代码：

    try:
        Region(name=server['locale']).save()
        print 'Added region: %(locale)s' % server
    except IntegrityError:
        pass

我已经确认IntegrityError正在发生，但后来我得到了这个我不希望的错误：

  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/models/base.py", line 456, in save
    self.save_base(using=using, force_insert=force_insert, force_update=force_update)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/models/base.py", line 549, in save_base
    result = manager._insert(values, return_id=update_pk, using=using)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/models/manager.py", line 195, in _insert
    return insert_query(self.model, values, **kwargs)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/models/query.py", line 1518, in insert_query
    return query.get_compiler(using=using).execute_sql(return_id)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/models/sql/compiler.py", line 788, in execute_sql
    cursor = super(SQLInsertCompiler, self).execute_sql(None)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/models/sql/compiler.py", line 732, in execute_sql
    cursor.execute(sql, params)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/backends/util.py", line 15, in execute
    return self.cursor.execute(sql, params)
  File "/home/daedalus/webapps/wowstatus/lib/python2.6/django/db/backends/postgresql_psycopg2/base.py", line 44, in execute
    return self.cursor.execute(query, args)
django.db.utils.DatabaseError: current transaction is aborted, commands ignored until end of transaction block

Answer 1

如果出现故障，您应该重置db状态例如：

from django.db import transaction

@transaction.commit_manually
def Populate():
    try:
        Region(name=server['locale']).save()
        print 'Added region: %(locale)s' % server
    except IntegrityError:
        transaction.rollback()
    else:
        transaction.commit()

Answer 2

有时从django shell访问数据库时会出现此错误。我通过关闭连接来修复它：

from django.db import connection
connection.close()
cur = connection.cursor()
sql = 'select distinct category from uploads_document'
cur.execute(sql)

在我发出错误后，例如'select ditsinct ..'

django.db.utils.DatabaseError

2 个答案: