使用Django LocalFlavor Zip作为模型字段 [英] Working with Django LocalFlavor Zip as a Model Field

问题描述

执行以下操作的最佳方法是：

  ### models.py 
>> >从django.db导入模型
>>>>从django.contrib.auth.models import User 
＃创建客户端类。 
>>> class Client（models.Model）：
 ... user = models.OntToOneField（User）
 ... zip = *** ??? ***（）
 
 ### forms.py 
>>>从django.forms import ModelForm 
＃创建表单类。 
>>> classForm（ModelForm）：
 ... class Meta：
 ... model = Client 
  

我试图获得最终结果，使用美国邮政编码字段窗体小部件/验证器仅使用models.py文件修改...也可以不想执行以下操作：

  ### forms.py 
>>> from django.forms import ModelForm 
>>>>从django.contrib.localflavor.us.forms import USZipCodeField 
＃创建表单类。 
>>> classForm（ModelForm）：
 ... class Meta：
 ... model = Client 
 ... zip = USZipCodeField（）
  / pre> 
 
 
注意：这可能是最好的方法来完成它在forms.py文件如上所示...如果是这样，我猜我没有把它放在那里，而不是一个自定义的模型领域（例如，DRY？松耦合？）。在这种情况下，帮助更好地了解forms.py对models.py的好处的任何帮助将是非常感谢。
 
 
 
提前感谢！ 
 -Tom 
解决方案
邮政编码只是一串数字/字母，所以没有必要定义一个自定义字段用于将其存储在数据库中。目前在Django中没有模型级的验证（尽管有一个Google Summer of Code项目来添加它），所以自定义模型字段不会添加任何东西。验证来自于表单级别，这就是为什么有一个自定义表单字段。
 
What's the best way to implement the following:
### models.py
>>> from django.db import models
>>> from django.contrib.auth.models import User
# Create the client class.
>>> class Client(models.Model):
...     user = models.OntToOneField(User)
...     zip = ***???***()

### forms.py
>>> from django.forms import ModelForm
# Create the form class.
>>> class ArticleForm(ModelForm):
...     class Meta:
...         model = Client
I'm trying to get the end result to use the US Zip Codes Field form widget/validator using only modifications the models.py file... aka I don't want to do the following:
### forms.py
>>> from django.forms import ModelForm
>>> from django.contrib.localflavor.us.forms import USZipCodeField
# Create the form class.
>>> class ArticleForm(ModelForm):
...     class Meta:
...         model = Client
...     zip = USZipCodeField()
NOTE: It might be that the BEST way to accomplish it is in the forms.py file as shown above... If this is the case, I guess I'm missing the argument/benefit of having it there instead of as a custom model field (e.g., DRY?, loose coupling?) Any help on helping better understand the benefits of forms.py over models.py in this scenario would be greatly appreciated.

Thanks in advance!
-Tom
解决方案
A zip code is just a string of numbers/letters, so there's no need to define a custom field for storing it in the database. There's no model-level validation in Django at the moment (although there's a Google Summer of Code project to add it), so a custom model field wouldn't add anything. The validation comes at the form level, which is why there's a custom form field.

                        
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