问题描述
它在顶部显示一个表单,当您提交表单时,它将仅显示一些适合过滤器的Offer
实例。它可以正常工作,但是每次我提交它时,表单都会返回到初始值。我该如何制止呢?我的表单使用GET
,并且视图基于类。另外,表单中的__init__
似乎无效。
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 %}
forms.py
class SearchForm(forms.Form):
def __init__(self,*args,**kwargs):
super(SearchForm,self).__init__(*args,**kwargs)
self.book = '0'
self.min_worn_degree = 'abc'
self.min_note_degree = 'abc'
BOOK_CHOICE = tuple([('0','모두')] + [(book.id,book.title) for book in Book.objects.all()])
book = forms.ChoiceField(label='책',choices=BOOK_CHOICE)
MIN_QUALITY = (
('a','상 이상'),('ab','중 이상'),('abc','하 이상'),)
min_worn_degree = forms.ChoiceField(label='낡은 정도',choices=MIN_QUALITY)
min_note_degree = forms.ChoiceField(label='필기 정도',choices=MIN_QUALITY)
解决方法
将此代码添加到Search
类中:
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