发送多选数据时的Django MultiValueDictKeyError

<!-- HTML表单 -->
<form method="post">
    {% csrf_token %}
    <select name="choices" multiple>
        <option value="1">Option 1</option>
        <option value="2">Option 2</option>
    </select>
    <button type="submit">Submit</button>
</form>

# Django视图
from django.http import HttpResponse

def my_view(request):
    if request.method == 'POST':
        try:
            choices = request.POST['choices']  # 正确的键名
        except KeyError:
            choices = []  # 如果键不存在，提供一个默认值
        return HttpResponse(f"Selected choices: {choices}")

# Django视图
from django.http import HttpResponse

def my_view(request):
    if request.method == 'POST':
        choices = request.POST.getlist('choices')  # 安全获取多值
        return HttpResponse(f"Selected choices: {choices}")

# Django视图
from django.http import HttpResponse

def my_view(request):
    if request.method == 'POST':
        choices = request.POST.get('choices', [])  # 提供默认值
        return HttpResponse(f"Selected choices: {choices}")