使用语言环境设置时,Django shell 的行为(至少对我而言)出乎意料。从外部脚本调用时,逗号分隔的十进制字段的表单验证有效,而从 django shell (ipython) 调用失败。
开始一个新项目我得到以下文件:
local_forms/
├── local_forms
│ ├── __init__.py
│ ├── models.py
│ ├── settings.py
│ ├── urls.py
│ └── wsgi.py
├── manage.py
├── my_form.py
├── test_form.py
local_forms/models.py:
from django.db import models
class MyModel(models.Model):
val=models.DecimalField("value",max_digits=11,decimal_places=2)
my_form.py
from django import forms
from django.conf import settings
from local_forms.models import MyModel
class MyForm(forms.ModelForm):
val = forms.DecimalField(localize=True)
def __init__(self,*args,**kwargs):
super(MyForm,self).__init__(*args,**kwargs)
self.fields['val'].localize=True
if __debug__:
print self.fields['val'].localize
print ("Separator: "+settings.DECIMAL_SEPARATOR)
print ("Language: " +settings.LANGUAGE_CODE)
class Meta:
model=MyModel
test_form.py:
#!/usr/bin/env python
import os
import sys
if __name__ == "__main__":
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "local_forms.settings")
import my_form
form=my_form.MyForm({'val':'0,2'})
print ("Is bound: %s" % form.is_bound)
print ("Form valid %s" % form.is_valid())
print("Errors in val: %s" % form['val'].errors)
调用 ./test_form.py 产生:
./test_form.py
True
Separator: .
Language: de-de
Is bound: True
Form valid True
Errors in val:
在 django shell 中做同样的事情:python manage.py shell
In [1]: import my_form as mf
In [2]: form=mf.MyForm({'val':'0,2'})
True
Separator: .
Language: de-de
In [3]: form.is_valid()
Out[3]: False
In [4]: form['val'].errors
Out[4]: [u'Enter a number.']
总结一下:如果我启动 django shell(在我的电脑上使用 ipython),语言环境就无法正常工作。在脚本中执行完全相同的操作非常有效。你能解释一下这种行为吗?