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Django“预期的字符串或缓冲区”是什么意思？错误提示？

发布于 2024-10-05 04:11:53 字数 89 浏览 8 评论 0原文

我已经被这个错误困扰了一段时间了，我只是不明白它意味着什么。当我尝试将对象保存到 mysql 数据库时会发生这种情况。有什么想法吗？

感谢您的帮助！

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甜妞爱困 2024-10-12 04:11:53

刚刚遇到了同样的问题并解决了。我实例化了一个这样的表单：

data = {'date' : datetime.now} #this is the problem
form = MyForm(data)

该表单稍后保存，django 尝试在模型中设置“日期”。但显然，datetime.now 指的是函数而不是日期。我想做的是 datetime.now()

也许这可以帮助任何人将来遇到这个问题。

Just ran into the same problem and resolved it. I instantiated a form like this:

data = {'date' : datetime.now} #this is the problem
form = MyForm(data)

That form was saved later on and django tried to set 'date' in the model. But datetime.now refers to a function rather than a date, obviously. What I wanted to do was datetime.now()

Maybe this helps anybody running into this in future.

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在巴黎塔顶看东京樱花 2024-10-12 04:11:53

这可能意味着 Python 正在尝试执行需要某种数据类型（bool、string、int 等）的代码，但提供了其他不正确的数据类型。

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眉黛浅 2024-10-12 04:11:53

就我而言，当我使用“时间”库将日期字符串转换为日期时间对象时，就会出现这种情况。我只是使用“datetime.strptime”而不是“time.strptime”，问题就消失了。

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玉环 2024-10-12 04:11:53

django 中的日期时间验证器位于文件：

/path/to/project/venv/lib/python2.7/site-packages/django/utils/dateparse.py

或当前 python 解释器的站点包中。
看看那里的正则表达式。就我而言，解决这个问题的方法是：

ended=datetime.fromtimestamp(time.time())
other=datetime.fromtimestamp(time.time())

# in the model:
ended = models.DateTimeField(blank=True, null=True) # or
other = models.DateTimeField(auto_now_add=False, blank=True)

两者都有效。

The datetime validator in django is in the file:

/path/to/project/venv/lib/python2.7/site-packages/django/utils/dateparse.py

or in the site-packages of your current python interpreter.
Have a look there to see the regular expressions. In my case, the way to solve it was:

ended=datetime.fromtimestamp(time.time())
other=datetime.fromtimestamp(time.time())

# in the model:
ended = models.DateTimeField(blank=True, null=True) # or
other = models.DateTimeField(auto_now_add=False, blank=True)

both working.

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稀香 2024-10-12 04:11:53

“expiration”是这个字段

expiration = models.DateTimeField(default=7)

，有错误的代码是这个：

ex = timedelta(minutes=expiration)                      
authobj, created = cls.objects.update_or_create(                         
    operator=operator,                                                   
    defaults={'transport':transport,'token':cls.generate_key(40),'expiration':ex}
)

通过这样设置（而不是 timedelta，日期）解决了这个问题

ex = datetime.now() + timedelta(minutes=expiration)                      
authobj, created = cls.objects.update_or_create(                         
    operator=operator,                                                   
    defaults={'transport':transport,'token':cls.generate_key(40),'expiration':ex}
)

'expiration' is this field

expiration = models.DateTimeField(default=7)

And code with error was this one:

ex = timedelta(minutes=expiration)                      
authobj, created = cls.objects.update_or_create(                         
    operator=operator,                                                   
    defaults={'transport':transport,'token':cls.generate_key(40),'expiration':ex}
)

And it was solved by setting it like this (instead of timedelta, a date)

ex = datetime.now() + timedelta(minutes=expiration)                      
authobj, created = cls.objects.update_or_create(                         
    operator=operator,                                                   
    defaults={'transport':transport,'token':cls.generate_key(40),'expiration':ex}
)

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