目標我想在搜索結果呈現時保留查詢。下面是一個示例，其中搜索欄在結果頁面上包含堆棧溢出。失敗的解決方案這些是最小的代碼示例# search_results.html<form action="/search" method="post">    {% csrf_token %}    {{ form }}    <input type="submit" value="Search"></form># views.py...class SearchView(TemplateView):    """Search view"""    def form_valid(self, form):        """redirect to the success url with url params"""        quoted_user_query = urllib.parse.quote_plus(form.cleaned_data['user_query'])        return HttpResponseRedirect(''.join([self.get_success_url(), quoted_user_query]))    def get_context_data(self. **kwargs):        context = super().get_context(**kwargs)        user_query = self.request.GET.get('q', None)        form.initial = {'user_query': user_query}        return context    def get_success_url(self):        """append success url with search query"""        if not self.success_url:            raise ImproperlyConfigured('No success url for {}'.format((str(self))))        return ''.join([str(self.success_url), '?q='])我第一次在瀏覽器中搜索時，模板按預期呈現。如果我搜索以下內容將呈現foo<form action="/search" method="post">    <input type="text" value="foo" name="search">    <input type="submit" value="Search"></form>但是，第二次搜索不會更改搜索欄中的字符串。如果我在搜索后搜索，搜索欄的值不會更改為預期。barfoobar<form action="/search" method="post">    <input type="text" value="foo" name="search">    <input type="submit" value="Search"></form>我做錯了什么？下面是表單代碼。# forms.pyfrom django import formsclass SearchBar(forms.Form):    user_query = forms.CharField()編輯：當我將 {{ form.initial.user_query }} 添加到模板時，預期值呈現為搜索欄旁邊的文本，但不呈現在搜索欄中。# search_results.html{{ form.initial.user_query }}<form action="/search" method="post">    {% csrf_token %}    {{ form }}    <input type="submit" value="Search"></form>bar<form action="/search" method="post">    <input type="text" value="foo" name="search">    <input type="submit" value="Search"></form>