Python 如何在基于类的视图中使用以前的输入初始化django表单？

它在顶部显示一个表单，当您提交表单时，它将只显示一些符合过滤器的

报价

实例。它工作得很好，但每次我提交它时，表单都会返回初始值。我怎样才能阻止它？我的表单使用

GET

，视图基于类。此外，表单中的

\uuuuu init\uuuu

似乎不起作用

views.py

class Search(ListView, FormMixin):
    model = Offer
    template_name = 'search.html'
    paginate_by = 20
    form_class = SearchForm

    def get_queryset(self):
        self.form = SearchForm(self.request.GET)
        if self.form.is_valid():
            data = self.form.cleaned_data
            qs = Offer.objects.all()
            if data['book'] != '0':
                qs = qs.filter(book_id=data['book'])
            qs = qs.filter(worn_degree__in=data['min_worn_degree'])
            qs = qs.filter(note_degree__in=data['min_note_degree'])
            return qs
        else:
            return Offer.objects.all()

search.html

{% extends 'base_generic.html' %}

{% block content %}
    <form method="get">
        {% csrf_token %}
        <table>
            {{ form.as_table }}
        </table>
        <br>
        <input type="submit" value="검색">
    </form>
    {% if object_list %}
        {% for object in object_list %}
            <p>{{ object.book.title }}</p>
            <p>{{ object.seller }}</p>
        {% endfor %}
    {% else %}
        <p>There are no offers.</vp>
    {% endif %}
{% endblock %}

---

在

搜索

类中添加此代码：

def get_context_data(self, *, object_list=None, **kwargs):
    form = SearchForm(self.request.GET)
    context = super(Search, self).get_context_data(**kwargs)
    context['form'] = form
    return context

def get_context_data(self, *, object_list=None, **kwargs):
    form = SearchForm(self.request.GET)
    context = super(Search, self).get_context_data(**kwargs)
    context['form'] = form
    return context