使用函数在django对象中添加批注

from django.db import models

class MyModel(models.Model):
    # 其他字段定义
    annotations = models.TextField(blank=True, null=True)

def add_annotation(obj, annotation):
    if obj.annotations:
        obj.annotations += '\n' + annotation
    else:
        obj.annotations = annotation
    obj.save()

def my_view(request, object_id):
    obj = MyModel.objects.get(id=object_id)
    annotation = "这是一个批注"
    add_annotation(obj, annotation)
    # 其他处理逻辑