How to use parameters in class view and url?-CodePudding

I want to get parameter from template. But when I do it gives an error:

TypeError at /report/2000-01-01/2022-08-12/Investigations/ wrapper_func() missing 1 required positional argument: 'request'

It takes the parameters true but I think I can't pass them to the views. How can I do it?

views.py

class GroupingReportsPage(ReportsMixin, ListView):
    model = ProcessType
    def case_groups(date_1, date_2, process_group):
        fieldname = 'case_type_value'
        cases = Case.objects.filter(date_created__range=[date_1, date_2])
        process_types = ProcessType.objects.filter(reporting_group__option=process_group)
        report_group = {}
        print('cases')
        print('cases')
        print(cases)
        print(process_types)
        return cases

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        print('sadasds')
        self.case_groups()
        context['query_trend'] = 'query_trend'
        return context

urls.py

path('report/<str:date_1>/<str:date_2>/<str:process_group>/', report.GroupingReportsPage.as_view(), name='process_groups'),

template

<a href="{% url 'fdm:process_groups' date_1 date_2 index %}" style="color: black">
                    {{index}}
                </a>

CodePudding user response：

I'm not sure but this is probably caused by missing self parameter in custom method (which is not static).

Change this:

def case_groups(date_1, date_2, process_group):

To this:

@staticmethod
def case_groups(date_1, date_2, process_group):

CodePudding user response：

def get_context_data(self, request, **kwargs):

Try to change your function declaration to include request parameter.