Django:如何从其他模型的表单中添加ManyToMany值

from django import forms
from .models import ModelA

class OtherModelForm(forms.Form):
    m2m_field = forms.ModelMultipleChoiceField(queryset=ModelA.objects.all())

from django.shortcuts import render
from .forms import OtherModelForm

def add_m2m_value(request):
    if request.method == 'POST':
        form = OtherModelForm(request.POST)
        if form.is_valid():
            # 获取表单数据
            m2m_values = form.cleaned_data['m2m_field']
            
            # 创建或获取需要添加ManyToMany值的模型实例
            model_instance = ModelB.objects.get(pk=1)
            
            # 将ManyToMany值添加到模型实例中
            model_instance.m2m_field.add(*m2m_values)
            
            # 保存模型实例
            model_instance.save()
            
            # 返回成功信息或重定向到其他页面
            return render(request, 'success.html')
    else:
        form = OtherModelForm()
    
    return render(request, 'form.html', {'form': form})