Question

当我尝试保存两个对象属性的添加时，Django不断抛出以下内容。

invalid literal for int() with base 10: ''

观点是：

def buy_pack(request, pack_name):
if request.method == 'POST':
    form = CardForm(request.POST, request.user)
    pack = Pack.objects.get(name=pack_name)
    stripe_user = request.user.username

    if form.is_valid():
        token = request.POST['stripeToken']
        charge = stripe.Charge.create(
            amount=pack.cost,
            currency="usd",
            card=token,
            description=stripe_user+"_"+pack.name,
        )

        datestring = charge.created
        dt = datetime.datetime.fromtimestamp(float(datestring))
        new_purchase = Purchase(user=request.user, date_time=dt, pack=pack, payment_id=charge.id, last_4_digits=charge.card.last4)
        new_purchase.save()

        user_profile = request.user.get_profile()
        t = user_profile.videos_remaining + pack.videos_allowed
        user_profile.videos_remaining = t
        user_profile.save()

有问题的模型是：

class UserProfile(models.Model):
    user = models.ForeignKey(User, unique=True)
    name = models.CharField(max_length=50)
    videos_remaining = models.IntegerField(default=1)
    last_4_digits = models.IntegerField(max_length=4, blank=True)
    stripe_id = models.CharField(max_length=255, blank=True)

    def __unicode__(self):
        return self.name

和

class Pack(models.Model):
    name = models.CharField(max_length=25)
    videos_allowed = models.IntegerField()
    cost = models.IntegerField()

    def __unicode__(self):
        return self.name

回溯是：

Traceback:
File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/Users/Jeff/Dropbox/xxxxx/Code/thankyouvid/../thankyouvid/main/views.py" in buy_pack
  48.           user_profile.save()
File "/Library/Python/2.7/site-packages/django/db/models/base.py" in save
  460.         self.save_base(using=using, force_insert=force_insert, force_update=force_update)
File "/Library/Python/2.7/site-packages/django/db/models/base.py" in save_base
  526.                         rows = manager.using(using).filter(pk=pk_val)._update(values)
File "/Library/Python/2.7/site-packages/django/db/models/query.py" in _update
  491.         return query.get_compiler(self.db).execute_sql(None)
File "/Library/Python/2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  869.         cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/Library/Python/2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  725.             sql, params = self.as_sql()
File "/Library/Python/2.7/site-packages/django/db/models/sql/compiler.py" in as_sql
  834.                 val = field.get_db_prep_save(val, connection=self.connection)
File "/Library/Python/2.7/site-packages/django/db/models/fields/subclassing.py" in inner
  28.             return func(*args, **kwargs)
File "/Library/Python/2.7/site-packages/django/db/models/fields/subclassing.py" in inner
  28.             return func(*args, **kwargs)
File "/Library/Python/2.7/site-packages/django/db/models/fields/__init__.py" in get_db_prep_save
  276.         return self.get_db_prep_value(value, connection=connection, prepared=False)
File "/Library/Python/2.7/site-packages/django/db/models/fields/subclassing.py" in inner
  53.             return func(*args, **kwargs)
File "/Library/Python/2.7/site-packages/django/db/models/fields/subclassing.py" in inner
  53.             return func(*args, **kwargs)
File "/Library/Python/2.7/site-packages/django/db/models/fields/__init__.py" in get_db_prep_value
  271.             value = self.get_prep_value(value)
File "/Library/Python/2.7/site-packages/django/db/models/fields/__init__.py" in get_prep_value
  876.         return int(value)

Exception Type: ValueError at /buy_pack/most/
Exception Value: invalid literal for int() with base 10: ''

作为参考，user_profile.videos_remaining的存储值为1，pack.videos_allowed的存储值为100.我希望它将两个值一起添加并将它们存储为user_profile.videos_remaining对象属性中的101。

如果你能提供任何帮助我会非常感激。

编辑：问题最终是因为我没有传递整数字段last_4_digits的值。如果你有一个带有空白= True的integerField并且没有为它提交一个值，那么似乎会发生这种情况。

Answer 1

问题最终是因为我没有传递整数字段last_4_digits的值。如果你有一个带有空白= True的integerField并且没有为它提交一个值，那么似乎会发生这种情况。

Answer 2

我在Django人口脚本中也遇到过此错误消息，其中ForeignKey同时包含blank=True和null=True，并且传递了'' 作为objects.get_or_create()的参数。

我通过传递argument=None来解决问题。 None部分是线索。

Answer 3

当“ Integer” inupt包含空或字符串值（例如“'id”，“ ...”等）时，会发生这种类型的错误。因此，您必须找出这种输入类型所得到的。

Answer 4

对我来说，问题是我正在使用required=False, disabled=True,，但没有将数据发送到该字段的服务器。我改为

amount_payments = CharField(widget=TextInput(attrs={'readonly': 'readonly'}))

当尝试保存对象属性时，Django向基数为10的'（）传递无效的文字

4 个答案: