防止在Django REST API中将数据发送到端点并存储到数据库时出现争用情况

from django.db import transaction

@transaction.atomic
def update_data(request):
    # 数据库操作
    pass

from django.db import transaction

def update_data(request):
    with transaction.atomic():
        # 数据库操作
        pass

from django.db import connection

def update_data(request):
    with connection.cursor() as cursor:
        cursor.execute("SELECT * FROM my_table WHERE id = %s FOR UPDATE", [id])
        # 进行更新操作

class MyModel(models.Model):
    name = models.CharField(max_length=100)
    version = models.IntegerField(default=0)

    def save(self, *args, **kwargs):
        if self.pk:
            current_version = MyModel.objects.get(pk=self.pk).version
            if current_version != self.version:
                raise ConcurrentModificationException()
            self.version += 1
        super().save(*args, **kwargs)