Django South错误:模型：'DateTimeField‘对象没有属性’AttributeError‘`
Django South错误:模型：'DateTimeField‘对象没有属性’AttributeError‘`
提问于 2013-12-08 05:14:35
因此，我正在尝试通过向表中添加两列来迁移表。一个startDate和一个endDate。使用south for Django，这应该是一个简单的迁移。我还有很多包含dateTimes的其他表，但是出于某种原因，我在这里得到并发布了，但我没有看到它。
堆栈跟踪表明：
AttributeError: 'DateTimeField' object has no attribute 'model'下面是我正在迁移的模型：
# Keep track of who has applied for a Job
class JobApply(models.Model):
job = models.ForeignKey(Jobs)
user = models.ForeignKey(User)
# Keep track of the Developer accepted to do the work
accepted_dev = models.IntegerField(null=False, blank=False, default=0)
# If 1 (True) the User has applied to this job
isApplied = models.BooleanField(default=0)
startDate = models.DateTimeField()
endDate = models.DateTimeField()除startDate和endDate之外的所有字段都已存在于数据库中。因此，为了给这些列提供缺省值，我通过终端使用datetime.date.now()来保持所有内容的正方形。问题是，韩国的schemamigration运行得很好，但实际的迁移情况却很糟糕。
如果有人能看到这个错误，我的头发会很感激的。:P
编辑：包括堆栈跟踪：
Running migrations for insource:
- Migrating forwards to 0004_auto__add_field_jobapply_startDate__add_field_jobapply_endDate.
> insource:0004_auto__add_field_jobapply_startDate__add_field_jobapply_endDate
Error in migration: insource:0004_auto__add_field_jobapply_startDate__add_field_jobapply_endDate
Traceback (most recent call last):
File "./manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 285, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python2.7/dist-packages/south/management/commands/migrate.py", line 111, in handle
ignore_ghosts = ignore_ghosts,
File "/usr/local/lib/python2.7/dist-packages/south/migration/__init__.py", line 220, in migrate_app
success = migrator.migrate_many(target, workplan, database)
File "/usr/local/lib/python2.7/dist-packages/south/migration/migrators.py", line 229, in migrate_many
result = migrator.__class__.migrate_many(migrator, target, migrations, database)
File "/usr/local/lib/python2.7/dist-packages/south/migration/migrators.py", line 304, in migrate_many
result = self.migrate(migration, database)
File "/usr/local/lib/python2.7/dist-packages/south/migration/migrators.py", line 129, in migrate
result = self.run(migration, database)
File "/usr/local/lib/python2.7/dist-packages/south/migration/migrators.py", line 113, in run
return self.run_migration(migration, database)
File "/usr/local/lib/python2.7/dist-packages/south/migration/migrators.py", line 83, in run_migration
migration_function()
File "/usr/local/lib/python2.7/dist-packages/south/migration/migrators.py", line 59, in <lambda>
return (lambda: direction(orm))
File "/home/jared/Desktop/School/insource/insource/migrations/0004_auto__add_field_jobapply_startDate__add_field_jobapply_endDate.py", line 14, in forwards
keep_default=False)
File "/usr/local/lib/python2.7/dist-packages/south/db/generic.py", line 47, in _cache_clear
return func(self, table, *args, **opts)
File "/usr/local/lib/python2.7/dist-packages/south/db/generic.py", line 411, in add_column
sql = self.column_sql(table_name, name, field)
File "/usr/local/lib/python2.7/dist-packages/south/db/generic.py", line 706, in column_sql
default = field.get_db_prep_save(default, connection=self._get_connection())
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 350, in get_db_prep_save
prepared=False)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 911, in get_db_prep_value
value = self.get_prep_value(value)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 902, in get_prep_value
(self.model.__name__, self.name, value),
AttributeError: 'DateTimeField' object has no attribute 'model'迁移代码(添加相关代码，因为有点长)：
def forwards(self, orm):
# Adding field 'JobApply.startDate'
db.add_column(u'insource_jobapply', 'startDate',
self.gf('django.db.models.fields.DateTimeField')(default=datetime.datetime(2013, 12, 7, 0, 0)),
keep_default=False)
# Adding field 'JobApply.endDate'
db.add_column(u'insource_jobapply', 'endDate',
self.gf('django.db.models.fields.DateTimeField')(default=datetime.datetime(2013, 12, 7, 0, 0)),
keep_default=False)
def backwards(self, orm):
# Deleting field 'JobApply.startDate'
db.delete_column(u'insource_jobapply', 'startDate')
# Deleting field 'JobApply.endDate'
db.delete_column(u'insource_jobapply', 'endDate')
u'insource.jobapply': {
'Meta': {'object_name': 'JobApply'},
'accepted_dev': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
'endDate': ('django.db.models.fields.DateTimeField', [], {}),
u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
'isApplied': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
'job': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['insource.Jobs']"}),
'startDate': ('django.db.models.fields.DateTimeField', [], {}),
'user': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['auth.User']"})
},回答 1
Stack Overflow用户
回答已采纳
发布于 2013-12-09 04:20:36
我不得不将我的django版south升级到0.8.4版。
我必须运行以下命令：
sudo easy_install -U South或者，如果使用pip
pip install South --upgrade在那之后，我的迁移就像预期的那样。
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