有两种模式:
class BaseImage(models.Model):
description = models.CharField(max_length=200)
image = models.ImageField(upload_to='images')
class Meta:
abstract = True
class PostImage(BaseImage):
in_text = models.BooleanField()
def __init__(self, *args, **kwargs):
super(BaseImage, self).__init__(*args, **kwargs)
self.image.upload_to = 'images/news/%Y/%m/%d'
如何在基础模型中设置 upload_to 属性?这是我的尝试不起作用:
self.image.upload_to = 'images/news/%Y/%m/%d'
最佳答案
我可以建议的是编写函数以从实例上传到方法,例如
在模型中
#default method to get file upload path
def get_upload_to(instance, filename):
return instance.get_upload_to_path(filename)
class BaseImage(models.Model):
description = models.CharField(max_length=200)
image = models.ImageField(upload_to=get_upload_to)
class Meta:
abstract = True
#method on the class to provide upload path for files specific to these objects
def get_upload_to_path(instance, filename):
return 'images/'+filename
class PostImage(BaseImage):
in_text = models.BooleanField()
#method to provide upload path for PostImage objects
def get_upload_to_path(instance, filename):
#change date.year etc to appropriate variables
return 'images/news/%Y/%m/%d' % (date.year, date.month, date.day)
关于python - Django 模型中的类属性继承,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12347420/