python - 属性错误 : object has no attribute 'pk'

Question

我正在尝试通过 Django 和 Django Rest Framework 将一些数据插入 MySQL 数据库(模型 LogsSeparate)，但我一直收到一个错误，我打赌这个错误很容易解决，但我自己无法弄清楚:

错误:

if obj.pk is None:

AttributeError: 'LogObjTest' object has no attribute 'pk'

代码:

class LogObjTest():          
    def __init__(self):   
        self._id = None  
        self.bits = None  
class getLogs(viewsets.ModelViewSet):
    arrayTest=[]
    for x in Logs.objects.all():        
        serializer_class = LogsSeparateSerializer
        test = Fields.objects.filter(pac_id=x.message_id_decimal)
        binaryTest=x.data_binary
        
        for i in test:
            obj=LogObjTest()
            obj._id=x.message_id_decimal
            obj.bits=binaryTest[i.fld_offset:i.fld_offset+i.fld_len]
            arrayTest.append(obj)
            
 
        queryset = arrayTest
        LogsSeparate.objects.bulk_create(arrayTest)

    print("arrayTest",arrayTest)

模型.py

class LogsSeparate(models.Model):
    _id = models.CharField(max_length=255, primary_key=True, null=False, db_column='_id')
    bits = models.CharField(max_length=500, db_column='bits')
    
    def __str__(self):
        return self.bits```

Answer 1

不要使用 LogObjTest。导入您在 model.py 文件中创建的 LogsSeparate，然后使用它创建一个新对象。

class getLogs(viewsets.ModelViewSet):
    arrayTest=[]
    for x in Logs.objects.all():        
        serializer_class = LogsSeparateSerializer
        test = Fields.objects.filter(pac_id=x.message_id_decimal)
        binaryTest=x.data_binary
        
        for i in test:
            obj=LogsSeparate(_id=x.message_id_decimal, bits=binaryTest[i.fld_offset:i.fld_offset+i.fld_len])
            arrayTest.append(obj)
            
 
        queryset = arrayTest
        LogsSeparate.objects.bulk_create(arrayTest)

    print("arrayTest",arrayTest)