Question

我写了一个这样的表单，我只想显示当前用户选择的抓取工具。我的表单看起来像

class SearchForm(forms.Form):
pub_date_from = forms.CharField(label="From",max_length=20)
pub_date_to = forms.CharField(label="To",max_length=30)
crawler = forms.ModelMultipleChoiceField(label="Crawler",queryset=Crawler.objects.all())

这里我列出了所有抓取工具，但我只想要当前用户选择的抓取工具。我使用它作为搜索表单，他只能从他之前选择的爬虫中搜索。我怎样才能做到这一点。我已将此表单用作搜索的上下文。

我的观点看起来像这样..

class SingleNewsView(ListView):
model = News
form_class = SearchForm
template_name = "single_news.html"



def get(self, request, pk, **kwargs):
    self.pk = pk

    self.pub_from = request.GET.get('pub_date_from',False)
    self.pub_to = request.GET.get('pub_date_to',False)
    self.crawlers = request.GET.get('crawler',False)
    self.format = request.GET.get('format',False)
    print self.format

    print self.crawlers


    return super(SingleNewsView,self).get(request,pk, **kwargs)



def get_context_data(self, **kwargs):

    context = super(SingleNewsView,self).get_context_data(**kwargs)
    context["form"] = SearchForm#(self.request.GET)
    if self.pub_from and self.pub_to and self.crawlers:
        context["something"] = News.objects.filter(category_id=self.pk).filter(published_date__range=(self.pub_from,self.pub_to), crawler=self.crawlers)
    else:
        context["something"] = News.objects.filter(category_id=self.pk)

    return context

任何人都可以告诉我如何才能获得当前用户选择的抓取工具。

Answer 1

当您实例化表单时，您必须传入要用于选择的对象，您可以在视图中使用：self.request.user.crawler_set.all()。然后我想你可以传入对象并将它们设置为__init__形式的字段选择。

所以你的搜索表格看起来与此相似..

class SearchForm(forms.Form):
    pub_date_from = forms.CharField(label="From",max_length=20)
    pub_date_to = forms.CharField(label="To",max_length=30)
    crawler = forms.ModelMultipleChoiceField(label="Crawler",queryset=Crawler.objects.all())

    def __init__(self, user, *args, **kwargs):
        if user:
            self.fields['crawler'].queryset = user.crawler_set.all()

您将在视图中使用以下内容实例化表单：

    context["form"] = SearchForm(self.request.user, instance=self.request.GET)

django表单在queryset中获取当前用户

1 个答案: