Django -如何根据从模板选择下拉列表中选择的选项来更改视图

from django.db import models

class Choice(models.Model):
    name = models.CharField(max_length=100)

    def __str__(self):
        return self.name

from django.shortcuts import render
from .models import Choice

def update_view(request):
    if request.method == 'POST':
        selected_choice = request.POST.get('choice')  # 获取用户选择的选项
        # 根据选项进行相应的处理
        # ...
        return render(request, 'update.html', {'selected_choice': selected_choice})
    else:
        choices = Choice.objects.all()
        return render(request, 'update.html', {'choices': choices})

<form method="post" action="{% url 'update_view' %}">
  {% csrf_token %}
  <select name="choice">
    {% for choice in choices %}
    <option value="{{ choice.name }}">{{ choice.name }}</option>
    {% endfor %}
  </select>
  <input type="submit" value="Submit">
</form>

{% if selected_choice %}
<p>You selected: {{ selected_choice }}</p>
{% endif %}