![](/img/trans.png)
[英]Python: How to call an instance method from a class method of the same class
[英]how to call a method that is out of the class and pass the class instance to it in python django
我有一个名为Klass的模型,代码如下:
class Klass(models.Model):
title = models.CharField(max_length=50, verbose_name='class name')
slug = models.SlugField(default=slug_generator, allow_unicode=True, unique=True)
而slug_generator
函数不在类之内。
def slug_generator(instance, new_slug):
if new_slug is not None:
slug = new_slug
else:
slug = slugify(instance.title)
Klass = instance.__class__
qs_exists = Klass.objects.filter(slug=slug).exists()
if qs_exists:
new_slug = "{slug}-{randstr}".format(
slug=slug,
randstr=random.randint(100000,999999)
)
return unique_slug_generator(instance, new_slug=new_slug)
return slug
为了创建唯一的子弹,我想使用此功能。 我想将此功能用于其他一些型号。 我如何通过课程?
您可以创建一个抽象类,另一个类从中抽象出来,我不检查代码,但这是类似的事情
class Slug(models.Model):
class Meta:
abstract = True
def slug_generator(instance, new_slug):
if new_slug is not None:
....
接着:
class Klass(Slug):
.....
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.