如何将过滤器从下拉列表传递到django-import-export视图

<!-- templates/myapp/import_data.html -->
<form method="post" action="{% url 'import_data' %}">
    {% csrf_token %}
    <select name="filter_by">
        <option value="all">All</option>
        <option value="active">Active</option>
        <option value="inactive">Inactive</option>
    </select>
    <button type="submit">Import Data</button>
</form>

# myapp/views.py
from import_export.mixins import ImportExportMixin
from django.http import HttpResponse
from django.views.generic.edit import FormView
from .models import MyModel
from .resources import MyModelResource

class MyModelImportView(ImportExportMixin, FormView):
    model = MyModel
    resource_class = MyModelResource
    template_name = 'myapp/import_data.html'
    success_url = '/'

    def get_queryset(self):
        queryset = super().get_queryset()
        filter_by = self.request.POST.get('filter_by', 'all')
        if filter_by == 'active':
            queryset = queryset.filter(is_active=True)
        elif filter_by == 'inactive':
            queryset = queryset.filter(is_active=False)
        return queryset

    def form_valid(self, form):
        # 处理导入逻辑
        return HttpResponse('Data imported successfully.')

# myapp/urls.py
from django.urls import path
from .views import MyModelImportView

urlpatterns = [
    path('import/', MyModelImportView.as_view(), name='import_data'),
]

# myapp/models.py
from django.db import models

class MyModel(models.Model):
    name = models.CharField(max_length=100)
    is_active = models.BooleanField(default=True)

# myapp/resources.py
from import_export import resources
from .models import MyModel

class MyModelResource(resources.ModelResource):
    class Meta:
        model = MyModel