我正在尝试创建一个提供另一个表单的表单。最新的迭代如下所示。流程如下:
用户从 form1 的两个下拉列表中选择一个学期。 当该页面被发布时,这些下拉列表中的值将用作下一个加载表单的查询过滤器。
我什至尝试将这些数据存储在 session 中,但我无法让任何东西发挥作用。我一直在寻找答案,但找不到任何答案。这很可能是因为我是 Django 新手,可能不理解我找到的一些信息。
class CopyClassEnrollmentForm1(forms.Form):
original_semester=forms.ModelChoiceField(queryset=Semester.objects.filter(is_active=True))
new_semester=forms.ModelChoiceField(queryset=Semester.objects.filter(is_active=True))
class CopyClassEnrollmentForm2(forms.Form):
original_class = forms.ModelChoiceField(queryset=Schedule.objects.filter(), empty_label=None)
new_class = forms.ModelChoiceField(queryset=Schedule.objects.filter(), empty_label=None)
def __init__(self, request, *args, **kwargs):
super (CopyClassEnrollmentForm2,self).__init__(*args,**kwargs)
self.fields['original_class'].queryset = Schedule.objects.filter(semester=original_semester)
@staff_member_required
def copy_class_enrollment1(request):
form = CopyClassEnrollmentForm1(request.POST)
if request.method == 'POST' and form.is_valid():
request.session['original_semester'] = form.cleaned_data['original_semester']
request.session['new_semester'] = form.cleaned_data['new_semester']
return HttpResponseRedirect(reverse('copy_class_enrollment2'))
else:
form = CopyClassEnrollmentForm1()
return render(request, "school/admin/copy_class_enrollment1.html", { 'form': form,})
def copy_class_enrollment2(request):
form = CopyClassEnrollmentForm2(request.POST)
if request.method == 'POST' and form.is_valid():
original_semester = request.session['original_semester']
new_semester = request.session['new_semester']
original_semester = form.cleaned_data['original_semester']
new_semester = form.cleaned_data['new_semester']
else:
form = CopyClassEnrollmentForm2()
return render(request, "school/admin/copy_class_enrollment2.html", { 'form': form,})
最佳答案
在第二个 View 中,您执行的操作顺序错误。您需要将 session 中的值传递到表单中,并且表单必须从 kwargs 中获取值:
class CopyClassEnrollmentForm2(forms.Form):
original_class = forms.ModelChoiceField(queryset=Schedule.objects.filter(), empty_label=None)
new_class = forms.ModelChoiceField(queryset=Schedule.objects.filter(), empty_label=None)
def __init__(self, *args, **kwargs):
original_semester = kwargs.pop('original_semester')
new_semester = kwargs.pop('new_semester')
super (CopyClassEnrollmentForm2,self).__init__(*args,**kwargs)
self.fields['original_class'].queryset = Schedule.objects.filter(semester=original_semester)
def copy_class_enrollment2(request):
original_semester = request.session['original_semester']
new_semester = request.session['new_semester']
if request.method == 'POST':
form = CopyClassEnrollmentForm2(request.POST, original_semester=original_semester, new_semester=new_semester)
if form.is_valid():
# do something
else:
form = CopyClassEnrollmentForm2(original_semester=original_semester, new_semester=new_semester)
return render(request, "school/admin/copy_class_enrollment2.html", { 'form': form,})
关于html - django表单发布到另一个表单,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27405347/