如何检查Django(Django admin)中的值转换?(再次访问)
我想知道如何控制模型数据中的转换。我在上找到了解决方案,但当我试图在代码中实现它时,出现了一些问题(我可以更改状态而不受惩罚): 以下是我的代码的相关部分:如何检查Django(Django admin)中的值转换?(再次访问),django,django-models,django-admin,django-forms,django-validation,Django,Django Models,Django Admin,Django Forms,Django Validation,我想知道如何控制模型数据中的转换。我在上找到了解决方案,但当我试图在代码中实现它时,出现了一些问题(我可以更改状态而不受惩罚): 以下是我的代码的相关部分: # Blog Entry Draft Status Constants ENTRY_STATUS_DRAFT = 0 ENTRY_STATUS_PUBLISHED = 1 # Create your models here. class Blog(models.Model): title = models.CharField(ma
# Blog Entry Draft Status Constants
ENTRY_STATUS_DRAFT = 0
ENTRY_STATUS_PUBLISHED = 1
# Create your models here.
class Blog(models.Model):
title = models.CharField(max_length=200, unique=True)
body_html = models.TextField(blank=True)
pub_date = models.DateTimeField ('Date Published', blank=True, null=True, editable=False)
PUB_STATUS = (
(ENTRY_STATUS_DRAFT, 'Draft'),
(ENTRY_STATUS_PUBLISHED, 'Published'),
)
status = models.IntegerField(choices=PUB_STATUS, default=0)
def clean(self):
# Don't allow draft entries to have a pub_date.
if self.status == 'draft' and self.pub_date is not None:
raise ValidationError('Draft entries may not have a publication date.')
# Set the publication date for published items if it hasn't been set already
if self.status == ENTRY_STATUS_PUBLISHED and not self.pub_date:
self.pub_date = datetime.datetime.now()
def clean_status(self):
status = self.cleaned_data.get('status')
if status == ENTRY_STATUS_DRAFT:
if self.instance and self.instance.status == ENTRY_STATUS_PUBLISHED:
raise ValidationError('You cannot change published to draft')
return status
clean()方法有效。我还尝试在clean_status()方法中使用“Published”和“Draft”,但没有成功
我把清洁状态放在正确的位置了吗?我忽略了什么吗?您的clean方法应该返回
self.cleaned_数据
,就像clean_状态
返回self.cleaned_数据['status']
:) 刚刚试过这个。。。没用。。。出现错误:“'Blog'对象没有属性'cleaned_data'”。追溯到