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[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
我有一個名為Klass的模型,代碼如下:
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
函數不在類之內。
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
為了創建唯一的子彈,我想使用此功能。 我想將此功能用於其他一些型號。 我如何通過課程?
您可以創建一個抽象類,另一個類從中抽象出來,我不檢查代碼,但這是類似的事情
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):
.....
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