I'm using Django 1.7 and factory_boy to create some models. Here's the code:
我正在使用Django 1.7和factory_boy来创建一些模型。这是代码：
In models.py:
在models.py中：
class Address(models.Model):
first_line = models.CharField(max_length=50, blank=True)
second_line = models.CharField(max_length=50, blank=True)
city = models.CharField(max_length=30, blank=True)
state = models.CharField(max_length=2, blank=True)
zipcode = models.CharField(max_length=5, blank=True)
zipcode_ext = models.CharField(max_length=4, blank=True)
The associated factory in factories.py (same directory):
在factories.py（相同目录）中的关联工厂：
class AddressFactory(factory.django.DjangoModelFactory):
class Meta:
model = Address
first_line = "555 Main St."
second_line = "Unit 2"
city = "Chicago"
state = "IL"
zipcode = "60606"
zipcode_ext = "1234"
Now, given this code in the django shell:
现在，在django shell中给出这段代码：
>>> from models import Address
>>> from django.forms.models import modelform_factory
>>> AddressForm = modelform_factory(Address)
>>> from factories import AddressFactory
>>> a = AddressFactory.create()
>>> af = AddressForm(instance = a)
>>> af.is_valid()
False
For some reason, the call to is_valid seems to always return false, and I can't figure out why. There don't seem to any errors on the form, and clean(), clean_fields(), and validate_unique() all do not seem to raise errors on the instance.
出于某种原因，对is_valid的调用似乎总是返回false，我无法弄清楚原因。表单上似乎没有任何错误，clean（），clean_fields（）和validate_unique（）似乎都没有在实例上引发错误。
Why does is_valid always return false?
为什么is_valid总是返回false？
1 个解决方案
#1
1
This has nothing to do with factory_boy. Forms are always invalid if they don't have any data, which yours doesn't. The instance parameter is used to populate the form's initial data for display, and to determine the object ID for updating, but it isn't used to set that data on POST.
这与factory_boy无关。如果表单没有任何数据，那么表单总是无效的。 instance参数用于填充表单的初始数据以供显示，并确定用于更新的对象ID，但不用于在POST上设置该数据。
I'm not quite sure what you want to do with the form there, but you'd need to convert it to a POST dictionary and pass it to the form's data parameter for it to be valid.
我不太确定你想用表单做什么，但是你需要将它转换为POST字典并将其传递给表单的数据参数才能使其有效。
#1
1
This has nothing to do with factory_boy. Forms are always invalid if they don't have any data, which yours doesn't. The instance parameter is used to populate the form's initial data for display, and to determine the object ID for updating, but it isn't used to set that data on POST.
这与factory_boy无关。如果表单没有任何数据，那么表单总是无效的。 instance参数用于填充表单的初始数据以供显示，并确定用于更新的对象ID，但不用于在POST上设置该数据。
I'm not quite sure what you want to do with the form there, but you'd need to convert it to a POST dictionary and pass it to the form's data parameter for it to be valid.
我不太确定你想用表单做什么，但是你需要将它转换为POST字典并将其传递给表单的数据参数才能使其有效。