如何在相关模型上创建多个select (在CreateView上)到一个外键？

from django import forms
from django.views.generic.edit import CreateView
from .models import Model1, Model2

class MyForm(forms.ModelForm):
    class Meta:
        model = Model1
        fields = '__all__'

    model2_1 = forms.ModelChoiceField(queryset=Model2.objects.all(), label='Model2 1')
    model2_2 = forms.ModelChoiceField(queryset=Model2.objects.all(), label='Model2 2')

class MyCreateView(CreateView):
    model = Model1
    form_class = MyForm
    template_name = 'my_template.html'
    success_url = '/success/'

    def form_valid(self, form):
        # 处理表单提交
        return super().form_valid(form)

from django.views.generic.edit import CreateView
from .models import Model1, Model2

class MyCreateView(CreateView):
    model = Model1
    fields = '__all__'
    template_name = 'my_template.html'
    success_url = '/success/'

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['model2_objects'] = Model2.objects.all()
        return context

<!-- my_template.html -->
<form method="post">
  {% csrf_token %}
  {{ form.as_p }}
  <label for="id_model2_1">Model2 1:</label>
  <select id="id_model2_1" name="model2_1">
    {% for model2_obj in model2_objects %}
      <option value="{{ model2_obj.pk }}">{{ model2_obj }}</option>
    {% endfor %}
  </select>
  <label for="id_model2_2">Model2 2:</label>
  <select id="id_model2_2" name="model2_2">
    {% for model2_obj in model2_objects %}
      <option value="{{ model2_obj.pk }}">{{ model2_obj }}</option>
    {% endfor %}
  </select>
  <button type="submit">Submit</button>
</form>