如何授权用户访问django中/admin的Model Form的特定字段/对象？显示html页面中的特定字段

from django.contrib import admin
from django.contrib.auth.models import User

class MyModelAdmin(admin.ModelAdmin):
    def get_form(self, request, obj=None, **kwargs):
        form = super().get_form(request, obj, **kwargs)
        user = request.user

        # 根据用户权限设置可见字段
        if not user.is_superuser:
            # 如果用户不是超级用户，则只显示特定字段
            form.base_fields['specific_field'].widget.attrs['readonly'] = True
            form.base_fields['specific_field'].widget.attrs['disabled'] = True

        return form

    def get_queryset(self, request):
        qs = super().get_queryset(request)
        user = request.user

        # 根据用户权限设置可见对象
        if not user.is_superuser:
            # 如果用户不是超级用户，则只显示特定对象
            qs = qs.filter(user=user)

        return qs

admin.site.register(MyModel, MyModelAdmin)

{% extends "admin/base.html" %}

{% block content %}
  <h1>{{ model_name }}</h1>
  <form method="post" action="{% url 'admin:app_model_change' model_id %}">
    {% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Save">
  </form>
{% endblock %}