django-filter shows all fields instead of just the ones specified

Question

In my filters.py:

class DataFilter(FilterSet):
    start_date = DateFilter(field_name='date',lookup_expr=('lt')) 
    end_date = DateFilter(field_name='date',lookup_expr=('gt'))
    date_range = DateRangeFilter(name='date')


    class Meta:
        model = DataModel
        fields = ['date', ]

I have also tried setting fields = [], but filters of all fields are still there.

Why is it showing all even I just only specified one (even none)? And how to fix that?

Can anyone help explain? Thank you!

In my models.py:

class DataModel(models.Model):
    date = models.DateField(default=now)
    other_field_1 = models.CharField()
    other_field_2 = models.CharField()
    other_field_3 = models.CharField()

In my views.py:

class DataModelListView(LoginRequiredMixin, FilterView):
    model = DataModel
    template_name = 'datamodel_list.html'
    filter_class = DataFilter

I am using django 3, django-filter 21.

Answer 1

Solution:

Since modifying FilterSet.Meta doesn't work anyway, I then tried looking at other parts of the code. Then I found changing filter_class to filterset_class in the FilterView (as below) work for me!

class DataModelListView(LoginRequiredMixin, FilterView):
    filterset_class = DataFilter    # instead of setting filter_class
    template_name = 'datamodel_list.html'
    # model = DataModel    # Either filterset_class or model needs to be set.