将请求 URL 参数传递到创建视图

Pass request URL parameter into create view

我希望这是一个简单的调整。我一直在阅读这里的各种主题,但我错过了一个非常基本的步骤——如何从 URL 请求中获取参数?

例如,URL是http://127.0.0.1:8000/registration/student/item/create/8

URL定义为path('student/item/create/<int:pk>',views.CreateStudentBehaviorItem.as_view(),name='student_item_create'),

我的class观点如下:

class CreateStudentBehaviorItem(LoginRequiredMixin, generic.CreateView):
    model = StudentItem

    form_class = StudentItemForm
    success_url = reverse_lazy('registration:student_item_list')

    def get_form_kwargs(self):
        kwargs = super(CreateStudentBehaviorItem, self).get_form_kwargs()
        kwargs['pk'] = self.request.GET.get('pk')    
        return kwargs

表格为:

class StudentItemForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        self.course = kwargs.pop('pk', 'all')
        super().__init__(*args, **kwargs)
        # Begin filtering by course ID 

        
    class Meta:
        model = StudentItem
        fields = ("item_student","behavior_category","behavior_item","response","internal_comments")
        widgets = {
        'item_student': forms.Select(attrs={'class': 'form-control'}),
        'behavior_category': forms.Select(attrs={'class': 'form-control'}),
        'behavior_item': forms.Select(attrs={'class': 'form-control'}),
        'response': forms.Select(attrs={'class': 'form-control'}),
        'internal_comments': forms.Textarea(attrs={'class': 'form-control', 'rows':5}),
        }

我什至还没到过滤的地步,因为我似乎无法从请求中获取 PK URL。我最基本的 Django 经验是使用 get_context_data 获取请求 URL 详细信息。我希望这是一个简单的修正来获取价值。

非常感谢。

试试这个

https://docs.djangoproject.com/en/4.0/ref/urls/#path

def get_form_kwargs(self):
    kwargs = super(CreateStudentBehaviorItem, self).get_form_kwargs()
    kwargs['pk'] = self.kwargs.get('pk')
    return kwargs