Question

有没有简单的方法可以做到这一点。我想我错过了一些组合。

    search = request.GET.get(u'search')
    cities = request.POST.getlist(u'cities')
    countries = request.POST.getlist(u'countries')

    if search and cities and counties:
        self.object_list = self.get_queryset().filter(title__icontains=search, country__icontains=counties,
                                                      city__icontains=cities,)
    elif search and cities:
        self.object_list = self.get_queryset().filter(title__icontains=search, city__icontains=cities,)
    elif search and counties:
        self.object_list = self.get_queryset().filter(title__icontains=search, country__icontains=counties,)
    elif cities and counties:
        self.object_list = self.get_queryset().filter(country__icontains=counties, city__icontains=cities,)
    elif search:
        self.object_list = self.get_queryset().filter(title__icontains=search,)
    elif search:
        self.object_list = self.get_queryset().filter(title__icontains=search,)
    else:
        self.object_list = self.get_queryset()

基本上只传递所选的字段。

这是表格

search = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'Looking For ...'}), required=False)
countries = forms.ModelMultipleChoiceField(queryset=Legs.objects.values_list('country', flat=True).distinct(),
                                          widget=forms.CheckboxSelectMultiple(), required=False)
cities = forms.ModelMultipleChoiceField(queryset=Legs.objects.values_list('city', flat=True).distinct(),
                                        widget=forms.CheckboxSelectMultiple(), required=False)

Answer 1

您可以链接filter()来电：

self.object_list = self.get_queryset()

if search:
    self.object_list = self.object_list.filter(title__icontains=search)
if cities:
    self.object_list = self.object_list.filter(city__icontains=cities)
if countries:
    self.object_list = self.object_list.filter(country__icontains=countries)

Answer 2

另一种方法是创建过滤器字典，然后在调用filter时将其分解。

filters = {}

if search:
    filters['title__icontains'] = search
if cities:
    filters['city__icontains'] =cities
if countries:
    filters['country__icontains'] =countries
self.object_list = self.get_queryset().filter(**filters)

更轻松地组合Django

2 个答案: