Django密钥错误 - 通过会话传递数据

Question

我正在打印下面的列表。

manifestData = form2.cleaned_data
print(manifestData)

输出的结果是：

[{'ProductCode': <Product: 1>, 'UnitQty': u'11', 'Price': u'11.00', 'Amount': u'121', 'DescriptionOfGoods': u'Washington Extra Fancy', 'Type': u'Cases', u'id': None, u'DELETE': False}, {'ProductCode': <Product: 2>, 'UnitQty': u'1', 'Price': u'12.00', 'Amount': u'12', 'DescriptionOfGoods': u'SUNKIST ORANGES', 'Type': u'Cases', u'id': None, u'DELETE': False}]

然后在我的视图中，我有下面的内容： 我试图通过会话数据传递这个变量，但我必须使ProductCode JSON可序列化......。

product = manifestData.pop('ProductCode')

当上面一行运行时，我得到了一个KeyError，上面写着 "Exception Value. ProductCode": ProductCode"。 完整的回溯如下。 有什么办法可以解决这个问题吗？

回溯

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/create/quote/

Django Version: 1.11.29
Python Version: 2.7.10
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'Poseidon',
 'crispy_forms']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback:

File "/Library/Python/2.7/site-packages/django/core/handlers/exception.py" in inner
  41.             response = get_response(request)

File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in _get_response
  187.                 response = self.process_exception_by_middleware(e, request)

File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in _get_response
  185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/Library/Python/2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
  23.                 return view_func(request, *args, **kwargs)

File "/Users/andrews/Desktop/WBU2/Poseidon/views.py" in QuoteView
  639.                 product = data.pop('ProductCode')

Exception Type: KeyError at /create/quote/
Exception Value: 'ProductCode'

更新

我摆脱了按键错误（只是在我的代码中打错了）--但现在我得到了一个TypeError，它说 integer is required

视图.py

def QuoteView(request):
    QuoteManifestForm= modelformset_factory(QuoteManifest, QManifestForm, can_delete = True)
    if request.method == "POST":
        form2 = QuoteManifestForm(request.POST)
        manifestData = form2.cleaned_data
        for item in manifestData:
             product = manifestData.pop('ProductCode') #TypeError comes here
             print(product)

....

模型.py

class QuoteManifest(models.Model):
    quote = models.ForeignKey(Quote, null=True, on_delete=models.CASCADE)
    ProductCode = models.ForeignKey(Product, null=True)
    DescriptionOfGoods = models.CharField(max_length=500, blank=True)
    UnitQty = models.CharField(max_length=10, blank=True)
    Type = models.CharField(max_length=50, blank=True)
    Amount = models.CharField(max_length=100, blank=True)
    Price = models.CharField(max_length=100, blank=True)

class Product(models.Model):
    ProductCode = models.CharField(max_length=100)
    HSCode = models.CharField(max_length=50, null=True)
    DescriptionOfGoods = models.CharField(max_length=100)
    Price = models.CharField(max_length=100)
    UnitType = models.CharField(max_length=100)

    def __str__(self):
        return str(self.ProductCode)

表单.py

class QManifestForm(forms.ModelForm):
    class Meta:
        model = QuoteManifest
        fields =('ProductCode', 'DescriptionOfGoods', 'UnitQty', 'Type','Amount', 'Price')

我知道它正在寻找 ProductCode 是一个整数，但我不明白为什么会这样......