如何实现与Django用于管理页面中的ManyToMany字段的小部件相同的小部件？

from django import forms
from django.contrib.admin.widgets import ManyToManyRawIdWidget
from django.utils.safestring import mark_safe

class CustomManyToManyWidget(ManyToManyRawIdWidget):
    template_name = 'admin/widgets/custom_many_to_many.html'

    def __init__(self, attrs=None, choices=()):
        super().__init__(attrs, choices)

    def get_context(self, name, value, attrs):
        context = super().get_context(name, value, attrs)
        related_url = reverse('admin:app_model_changelist')  # 替换为你的关联模型管理页面URL
        context['related_url'] = related_url
        return context

    def render(self, name, value, attrs=None, renderer=None):
        output = [super().render(name, value, attrs)]
        output.append(mark_safe(f'<script>console.log("Custom Widget Rendered");</script>'))
        return mark_safe(''.join(output))