Django:如何使用存储的模型实例作为表单选择？

from django import forms
from .models import MyModel

class MyForm(forms.Form):
    my_model_instance = forms.ModelChoiceField(
        queryset=MyModel.objects.all(),
        empty_label=None,
        label='选择一个选项',
    )

from django.shortcuts import render
from .forms import MyForm

def my_view(request):
    if request.method == 'POST':
        form = MyForm(request.POST)
        if form.is_valid():
            my_model_instance = form.cleaned_data['my_model_instance']
            # 在此处处理选定的模型实例
            return redirect('success_view')
    else:
        form = MyForm()

    return render(request, 'my_template.html', {'form': form})

<form method="post">
  {% csrf_token %}
  {{ form }}
 <button type="submit">提交</button>
</form>