Django UpdateView初始参数传递给其他UpdateView

时间:2019-03-07 12:01:47

标签: django

我有两个使用不同URL访问的更新视图。在第一个更新视图CreateType中,我在名字的初始位置设置了一个变量old_type。提交并浏览其他视图后,我将进入第二个UpdateView CreateSchedule。如果我在第二个视图中打印self.initial,则由于某种原因,我会在第一个UpdateView中找到变量old_type

第一视图

class CreateType(views.UpdateView):
    """
    Create type form
    """
    model = Group
    form_class = TypeForm
    template_name = 'create.html'
    extra_context = {'has_fifth_steps': False, 'active_step': 1, 'progress': 0}

    def get_object(self, queryset=None):
        object = super(CreateType, self).get_object(queryset)
        self.initial['old_type'] = object.type
        return object

    def form_valid(self, form):
        object = form.save()
        if object.type == Group.TYPE_SINGLE and self.initial['old_type'] == Group.TYPE_MULTIPLE:
            first_obj = Obj.objects.filter(group=object).values('id').first()
            if first_obj:
                Obj.objects.filter(group=object).exclude(id=first_obj['id']).delete()
        return redirect('create_obj.debtor', pk=object.pk)

我的第二个观点:

class CreateSchedule(views.UpdateView):
    """
    Schedule form
    """
    model = Group
    fields = []
    template_name = 'createschedule.html'

    def get_object(self, queryset=None):
        object = super(CreateSchedule, self).get_object(queryset)
        # if object.type == Group.TYPE_SINGLE:
        self.obj_object = Obj.objects.filter(group=object).first()
        return object

    def get_form(self, form_class=None):
        paymentschedule_formset = modelformset_factory(
            model=PaymentSchedule,
            form=PaymentScheduleForm,
            fields=('due_date', 'value'),
            validate_min=True,
            min_num=self.obj_object.number_of_payments,
            validate_max=True,
            max_num=self.obj_object.number_of_payments,
        )

        print(self.initial)
        return paymentschedule_formset(
            queryset=PaymentSchedule.objects.filter(obj=self.obj_object),
    )

    def get_context_data(self, **kwargs):
        context = super(CreateSchedule, self).get_context_data(**kwargs)
        if self.object.type == Group.TYPE_MULTIPLE:
            context['has_fifth_steps'] = True
            context['active_step'] = 5
        else:
            context['has_fifth_steps'] = False
            context['active_step'] = 4
        context['progress'] = 100
        return context

不确定我做错了什么还是这是正常行为,对我来说没有多大意义。

感谢任何帮助!

编辑:

添加了urls.py

urlpatterns = [
path('create/<int:pk>/', sanad.CreateType.as_view(), name='create_obj.type'),
path('create/<int:pk>/payments-schedule', CreatesSchedule.as_view(), name='create_obj.schedule'),
]

1 个答案:

答案 0 :(得分:1)

您永远不要修改self.initial。那是在FormMixin中的类级别定义的字典,CreateView使用该字典。如果您修改该字典,则所有视图都可以看到该修改。

您不应该这样做。无论如何,在get_object中更改初始名称是错误的事情。而是定义get_initial()方法以返回包含该值的新字典:

def get_initial(self):
    return {'old_type': self.object.type}

现在,您根本不需要覆盖get_object