英文:
Can we use the concept of inheritance in Django rest framework in ModelViewSets?
问题
我正在一遍又一遍地重复我的代码，在不同的ModelViewSets中，唯一变化的是模型的名称。所以，我想为此编写一个基类，并将每个模型的名称作为参数传递，但它不起作用。
有任何帮助吗？
class RemitterQueryViewViewset(viewsets.ModelViewSet):
queryset = RemitterQueryView.objects.all()
serializer_class = RemitterQueryViewSerializer
http_method_names = ['get']
def get_base_path(self):
splitted_url = self.request.build_absolute_uri().split('?')
base_url = splitted_url[0]
return base_url
def get_queryset(self):
limit = self.request.query_params.get('limit', 26)
offset = self.request.query_params.get('offset', 0)
filter_list = self.request.query_params.get('filter_list', None)
sort_list = self.request.query_params.get('sort_list', None)
if filter_list is None and sort_list is None:
return RemitterQueryView.objects.filter(id__gt=int(offset))[0:int(limit)]
elif filter_list is not None and sort_list is not None:
filter_columns = self.get_filter_list()
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns).order_by(*sort_columns)[0:int(limit)]
elif filter_list is None and sort_list is not None:
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset)).order_by(*sort_columns)[0:int(limit)]
elif filter_list is not None and sort_list is None:
filter_columns = self.get_filter_list()
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns)[0:int(limit)]
英文:
I'm repeating my code, again and again, in different ModelViewSets and the only thing that is changing here is the Model's name. So, I want to write a base class for this and send each model's name as an argument, but its not working.
Any help?
class RemitterQueryViewViewset(viewsets.ModelViewSet):
queryset = RemitterQueryView.objects.all()
serializer_class = RemitterQueryViewSerializer
http_method_names = ['get']
def get_base_path(self):
splitted_url = self.request.build_absolute_uri().split('?')
base_url = splitted_url[0]
return base_url
def get_queryset(self):
limit = self.request.query_params.get('limit', 26)
offset = self.request.query_params.get('offset', 0)
filter_list = self.request.query_params.get('filter_list', None)
sort_list = self.request.query_params.get('sort_list', None)
if filter_list is None and sort_list is None:
return RemitterQueryView.objects.filter(id__gt=int(offset))[0:int(limit)]
elif filter_list is not None and sort_list is not None:
filter_columns = self.get_filter_list()
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns).order_by(*sort_columns)[0:int(limit)]
elif filter_list is None and sort_list is not None:
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset)).order_by(*sort_columns)[0:int(limit)]
elif filter_list is not None and sort_list is None:
filter_columns = self.get_filter_list()
# print(filter_columns)
# print(MockData.objects.filter(id__gt=int(offset), **filter_columns)[0:int(limit)])
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns)[0:int(limit)]
答案1
得分: 1
你可以创建一个通用的混合类，并在所有的类视图中继承这个混合类。
class MixinView:
def get_base_path(self):
splitted_url = self.request.build_absolute_uri().split('?')
base_url = splitted_url[0]
return base_url
def get_queryset(self):
limit = self.request.query_params.get('limit', 26)
offset = self.request.query_params.get('offset', 0)
filter_list = self.request.query_params.get('filter_list', None)
sort_list = self.request.query_params.get('sort_list', None)
if filter_list is None and sort_list is None:
return RemitterQueryView.objects.filter(id__gt=int(offset))[0:int(limit)]
elif filter_list is not None and sort_list is not None:
filter_columns = self.get_filter_list()
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns).order_by(*sort_columns)[0:int(limit)]
elif filter_list is None and sort_list is not None:
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset)).order_by(*sort_columns)[0:int(limit)]
elif filter_list is not None and sort_list is None:
filter_columns = self.get_filter_list()
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns)[0:int(limit)]
class RemitterQueryViewViewset(MixinView, viewsets.ModelViewSet):
queryset = RemitterQueryView.objects.all()
serializer_class = RemitterQueryViewSerializer
http_method_names = ['get']
在这里，你的 MixinView 中的 get_queryset 方法将会被执行。
英文:
You can create a common mixin class and inherit this mixin in all CBV.
class MixinView:
def get_base_path(self):
splitted_url = self.request.build_absolute_uri().split('?')
base_url = splitted_url[0]
return base_url
def get_queryset(self):
limit = self.request.query_params.get('limit', 26)
offset = self.request.query_params.get('offset', 0)
filter_list = self.request.query_params.get('filter_list', None)
sort_list = self.request.query_params.get('sort_list', None)
if filter_list is None and sort_list is None:
return RemitterQueryView.objects.filter(id__gt=int(offset))[0:int(limit)]
elif filter_list is not None and sort_list is not None:
filter_columns = self.get_filter_list()
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns).order_by(*sort_columns)[0:int(limit)]
elif filter_list is None and sort_list is not None:
sort_columns = self.get_sort_list()
sort_columns = list(itertools.chain(*sort_columns))
return RemitterQueryView.objects.filter(id__gt=int(offset)).order_by(*sort_columns)[0:int(limit)]
elif filter_list is not None and sort_list is None:
filter_columns = self.get_filter_list()
# print(filter_columns)
# print(MockData.objects.filter(id__gt=int(offset), **filter_columns)[0:int(limit)])
return RemitterQueryView.objects.filter(id__gt=int(offset), **filter_columns)[0:int(limit)]
class RemitterQueryViewViewset(MixinView, viewsets.ModelViewSet):
queryset = RemitterQueryView.objects.all()
serializer_class = RemitterQueryViewSerializer
http_method_names = ['get']
Here your get_queryset method from MixinView will get executed.
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