Django self.request 不通过查询过滤

Question

我试图在我的搜索模板中实现一些基本搜索，但是当我搜索时，它在 URL 中工作，但不会更改模板中的任何帖子。意见：class SearchListView(ListView):    model = Post    template_name = "public/search.html"    def get_context_data(self, **kwargs):        context = super(SearchListView, self).get_context_data(**kwargs)        context['queryset'] = Post.objects.filter(live=True)        context['category'] = Category.objects.all()        return context    def SearchListView(request):        query = self.request.GET.get("q")        if query:            queryset = queryset.filter(title_icontains=query)我不确定这是否是正确的设置方式，因为我正在观看的教程没有使用基于类的视图。HTML：<div class="container mt-5 mb-5">    <div class="banner-search-main mb-5">        <form method='GET' action=''>            <p class="text-muted">Keywords:</p>            <input type="text" name='q' class="homebanner-search" placeholder="Enter your keywords" value='{{ request.get.q }}'>            <input type="submit" value="search">        </form>    </div>    <div class="detail-container">        {% for post in queryset %}            <div class="col-sm card-container">                <a href="{% url 'post-detail' post.slug %}">                    <div class="main-card">                        <div class="main-card-img">                            <img src="https://via.placeholder.com/270x150" class="card-img-top" alt="#">                        </div>                    </div>                </a>            </div>        {% endfor %}    </div></div>例子：

Answer 1

带有 get_queryset 方法的 ListView

class SearchListView(ListView):

    model = Post

    template_name = "public/search.html"

    def get_queryset(self):

       queryset = super().get_queryset().filter(live=True)

       query = self.request.GET.get("q")

       if query:

        queryset = queryset.filter(title__icontains=query)

       return queryset

    def get_context_data(self, **kwargs):

       context = super(SearchListView, self).get_context_data(**kwargs)

       context['queryset'] = self.get_queryset()

       context['category'] = Category.objects.all()

       return context

Answer 2

首先，我建议访问这个以查看基于类的视图的基础结构。

class SearchListView(ListView):

    model = Post

    template_name = "public/search.html"

    success_url ='where you want to redirect'

    def get_queryset(self): # method that returns the queryset is `get_queryset`

       query = self.request.GET.get("q")

       if query:

        queryset = self.model.objects.filter(title__icontains=query) # double underscore not single

       return queryset

    def get_context_data(self, **kwargs):

       context = super(SearchListView, self).get_context_data(**kwargs)

       context['queryset'] = self.get_queryset()

       context['category'] = Category.objects.all()

       return context

Answer 3

您的问题是您在类中创建了一个随机函数，该函数不会覆盖任何内容。您要做的是覆盖get_queryset()。

class SearchListView(ListView):

    model = Post

    template_name = "public/search.html"

    def get_context_data(self, **kwargs):

        context = super(SearchListView, self).get_context_data(**kwargs)

        context['queryset'] = self.get_queryset()

        context['category'] = Category.objects.all()

        return context

    def get_queryset(self):

        queryset = super().get_queryset().filter(live=True)

        query = self.request.GET.get("q")

        if query:

            queryset = queryset.filter(title__icontains=query)

        return queryset