我有一些我编写的代码,它的目的完全正常。
from django.shortcuts import get_object_or_404
from django.views.generic import ListView
from cab.models import Language
class LanguageDetail(ListView):
def get_queryset(self):
slug = self.kwargs['slug']
language = get_object_or_404(Language, slug=slug)
return language.snippet_set.all()
paginate_by = 20
template_name = 'cab/language_detail.html'
def get_context_data(self, **kwargs):
slug = self.kwargs['slug']
language = get_object_or_404(Language, slug=slug)
context = super(LanguageDetail, self).get_context_data(**kwargs)
context['language'] = language
return context
我的问题是我在两个函数中重复了两行代码,我不喜欢这样。
slug = self.kwargs['slug']
language = get_object_or_404(Language, slug=slug)
我怎么能避免? 提前谢谢。
答案 0 :(得分:0)
你的意思是这样吗?
def get_slug(self, name):
slug = self.kwargs[name]
return get_object_or_404(Language, slug=slug)
可以用作language = self.get_slug('slug')
请记住,如果kwargs
不包含name
,则会抛出错误。为了防止这种情况,您可以执行以下操作:
slug = self.kwargs.get(name, None)
if slug is not None:
...