我有一个django应用程序,一页上有几种不同型号的表格。我想要一条“成功”消息,只需在表单提交/验证后添加到上下文中即可轻松做到。但是,这留下了重新提交表单的可能性,这只会在返回页面时产生错误,但仍然使我感到烦恼。
网址:
url_patterns = [
re_path(r'^manager/$', Manager.as_view(), name='manager'),
.......more.....
]
views.py:
class Manager(LoginRequiredMixin, View):
template_name = 'results/manager_templates/manager.html'
form1 = Form1
form2 = Form2
login_url = '/'
redirect_field_name = 'redirect_to'
def get(self, request, *args, **kwargs):
form1 = self.form1()
form2 = self.form2()
context = {
'form1': form1,
'form2': form,}
return render(request, self.template_name, context)
def post(self, request, *args, **kwargs):
submit_clicked = request.POST.get('submit')
form1 = self.form1()
form2 = self.form2()
context = {}
if submit_clicked == 'Form 1':
form1 = self.form1(request.POST)
if form1.is_valid():
form1.save()
context['message'] = 'Form 1 successful'
# reset the form
form1 = self.form1()
# return HttpResponseRedirect(
# reverse('results:manager',
# ))
else:
print('NOT VALID')
elif submit_clicked == 'Form 2':
... do same stuff as above ...
context['form1'] = form1
context['form2'] = form2
return render(request, self.template_name, context)
如果我要取消对HttpResponseRedirect的注释,请在验证并添加表单后像这样:
return HttpResponseRedirect(
reverse('results:manager',
))
然后将其返回到我的页面,如果我刷新了该表单,则不会重新提交。但是,如果不通过url,就无法通过此参数:
即我要写:
return HttpResponseRedirect(
reverse('results:manager',
kwargs={'success':'success'}
))
我得到了错误:
Reverse for 'manager' with keyword arguments '{'success': 'success'}' not found. 1 pattern(s) tried: ['manager/$']
,如果我将urls.py更改为:
url_patterns = [
re_path(r'^manager/$', Manager.as_view(), name='manager'),
re_path(r'^manager/(?P<success>)$', Manager.as_view(), name='manager'),
]
我得到了错误:
Reverse for 'manager' with keyword arguments '{'success': 'success'}' not found. 2 pattern(s) tried: ['manager/(?P<success>)$', 'manager/$']
无论如何,是否需要传递不需要添加到url正则表达式的HttpResponseRedirect变量?还是有其他方法可以“重置”我的request.POST,从而无需使用HttpResponseRedirect即可重新提交表单?
答案 0 :(得分:1)
如您所见,您应该在成功发布后重定向,以防止重复请求。
更改网址时,您没有在success
组中添加任何要匹配的字符。
re_path(r'^manager/(?P<success>\w+)$', Manager.as_view(), name='manager'),
另一个选择是将变量存储在查询字符串中,例如/manager/?success=success
,然后您可以在重定向后从request.GET
检索值。
您还可以在会话中存储数据,或使用messages framework。