Question

我尝试从365 api获取一些消息并将其保存在我的InitialMessage模型上。我什么时候尝试这样做，我不断收到这条消息：

django.db.utils.IntegrityError：（＆＃39; 23000＆＃39;，＆＃34; [23000] [Microsoft] [SQL Server Native Client 11.0] [SQL Server]违反UNIQUE KEY约束＆＃39 ; UQ__assignme__F9CC0897DC370444＆＃39;。无法在对象中插入重复键＆＃39; dbo.assignment_initialmessage＆＃39;。重复键值为（）。（2627）（SQLParamData）＆＃34;）

UNIQUE KEY约束是指与模型Claim的关系（claim = models.OneToOneField（Claim，null = True，blank = True，default = None）

这是我的模特：

class InitialMessage(models.Model):
json = models.TextField()
att_url = models.CharField(max_length = 254, default='https://outlook.office365.com/api/v1.0/me/messages/{0}/attachments')
send_url = models.CharField(max_length = 254, default='https://outlook.office365.com/api/v1.0/me/sendmail')
update_url = models.CharField(max_length = 254, default='https://outlook.office365.com/api/v1.0/me/messages/{0}')
id_email = models.CharField(max_length = 254,unique=False)
subject = models.TextField()
body_content = models.TextField()
body_type = models.TextField()
importance = models.CharField(max_length = 254)
hasAttachments = models.BooleanField(default=False)
parentFolderId = models.CharField(max_length = 254)
e_from = models.TextField()
sender = models.TextField()
conversationId = models.TextField()
categories = models.TextField()
dateTimeSent = models.DateTimeField()
dateTimeReceived = models.DateTimeField()

status = models.CharField(max_length=2, choices=INITIALMESSAGE_STATUS, default='P')
claim = models.OneToOneField(Claim, null=True, blank=True, default=None)

def load_json(self):
    m_json = json.loads(self.json)

    try:
        email = InitialMessage.objects.get(id_email = m_json['Id'])
    except InitialMessage.DoesNotExist:
        email = None

    if email is None:
        self.id_email = m_json['Id']
        self.subject = m_json['Subject']
        self.body_content = m_json['Body']['Content']
        self.body_type = m_json['Body']['ContentType']
        self.importance = m_json['Importance']
        self.hasAttachments = m_json['HasAttachments']
        self.parentFolderId = m_json['ParentFolderId']
        self.e_from = m_json['From']
        self.sender = m_json['Sender']
        self.conversationId = m_json['ConversationId']
        self.categories = m_json['Categories']
        self.dateTimeSent = m_json['DateTimeSent']
        self.dateTimeReceived = m_json['DateTimeReceived']
        self.save()
    else:
        m_json = 'Duplicated'
    return m_json

这是我用来保存每封新电子邮件的代码：

log.debug('fetching messages.')
    response = requests.get(self.inbox_url,auth=self.auth,params={'$filter':self.filters})
    log.info('Response from O365: %s', str(response))
    for message in response.json()['value']:
        M = InitialMessage(json = json.dumps(message)).load_json()
    log.debug('all messages retrieved and put in to the list.')
    return True

有任何想法吗？谢谢你的帮助！

Django - OneToOneField可以是Null吗？

0 个答案: