[英]How to check if the value of a field has been deleted in Python/ Django
I'm trying to check if a value of field has been deleted and then return False
or True
if all the fields contain values.我正在尝试检查字段的值是否已被删除,然后如果所有字段都包含值,则返回
False
或True
。
My code actually doesn't check the value in the fields but just checks if the fields exists.我的代码实际上不检查字段中的值,而只是检查字段是否存在。
How to check the values of every specific field?如何检查每个特定字段的值?
This is my models and in my views I have to check the function.这是我的模型,在我看来,我必须检查功能。
# models.py
class CompanyDirector(models.Model):
username = models.CharField(max_length=128, blank=True, null=True)
directorTitle = models.CharField(max_length=8, blank=True, null=True)
directorName = models.CharField(max_length=64, blank=True, null=True)
directorSurname = models.CharField(max_length=64, blank=True, null=True)
directorId = models.CharField(max_length=16, blank=True, null=True)
proffessionStartDate = models.DateTimeField(blank=True, null=True)
# views.py
ret = {'complete': False}
try:
company_director =
CompanyDirector.objects.filter(company__token=token).first()
if company_director:
ret['complete'] = True
for field in company_director._meta.get_all_field_names():
if not getattr(company_director, field):
ret['complete'] = False
break;
except ValueError as e:
print (e)
return Response(ret)
Get the values
from the queryset, which will be a dict
object.从查询集中获取
values
,这将是一个dict
对象。
Solution :解决方案:
company_director = CompanyDirector.objects.filter(company__token=token).values().first()
if company_director:
for field, value in company_director.items():
if value is None:
return False
return True
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