如何在django_filter中过滤具有选择字段值的对象

from django.db import models

class Product(models.Model):
    CATEGORY_CHOICES = [
        ('electronics', 'Electronics'),
        ('clothing', 'Clothing'),
        ('books', 'Books'),
    ]
    
    name = models.CharField(max_length=100)
    category = models.CharField(max_length=20, choices=CATEGORY_CHOICES)
    price = models.DecimalField(max_digits=10, decimal_places=2)

import django_filters
from .models import Product

class ProductFilter(django_filters.FilterSet):
    class Meta:
        model = Product
        fields = {
            'category': ['exact'],  # 使用ChoiceFilter默认就是exact匹配
            'price': ['lt', 'gt'],  # 添加额外的过滤选项，例如小于(<)或大于(>)
        }

from django.shortcuts import render
from django_filters.views import FilterView
from .models import Product
from .filters import ProductFilter

class ProductListView(FilterView):
    model = Product
    filterset_class = ProductFilter
    template_name = 'product_list.html'

<form method="get">
    {{ filter.form.as_p }}
    <button type="submit">Search</button>
</form>

<ul>
{% for product in filter.qs %}
    <li>{{ product.name }} - {{ product.category }} - ${{ product.price }}</li>
{% endfor %}
</ul>