Question

我正在尝试为Django简单历史记录中的history_date字段创建自定义模型，但是当尝试保存到数据库时，出现错误.. autofunction::

我已经在默认NOT NULL constraint failed模型（例如history_date）的当前字段中获得了一些数据，但我想将其更改为“天/月/年”

我已使用2019-05-29 19:19:03.922533

导入了日期时间

文档：https://django-simple-history.readthedocs.io/en/2.7.0/historical_model.html#custom-history-date

型号：

from datetime import datetime

跟踪：

class NodesData(models.Model):
    Node = models.CharField(max_length=20, default="Anonymous Node")
    NodeIP = models.CharField(max_length=15)
    NodeCountry = models.CharField(max_length=30, default="Not Found")
    NodeCity = models.CharField(max_length=30, default="Not Found")
    NodeISP = models.CharField(max_length=30, default="Not Found")
    NodeLat = models.CharField(max_length=15, default="Not Found")
    NodeLon = models.CharField(max_length=15, default="Not Found")
    Node_id = models.CharField(max_length=128, default="Not Found")
    Node_Cores = models.CharField(max_length=15, default="Not Found")
    Node_Subtask_Success = models.CharField(max_length=15, default="Not Found")
    Node_Subtask_Error = models.CharField(max_length=15, default="Not Found")
    Node_Subtask_Timeout = models.CharField(max_length=15, default="Not Found")
    Node_Task_Requested = models.CharField(max_length=15, default="Not Found")
    Node_Blender_Performance = models.CharField(max_length=15, default="Not Found")
    Node_OS = models.CharField(max_length=10, default="Not Found")
    Node_OS_system = models.CharField(max_length=10, default="Not Found")
    Node_OS_release = models.CharField(max_length=25, default="Not Found")
    Node_OS_version = models.CharField(max_length=300, default="Not Found")
    Node_OS_windows_edition = models.CharField(max_length=25, default="Not Found", blank=True)
    Node_OS_linux_distribution = models.CharField(max_length=50, default="Not Found", blank=True)
    Node_Version = models.CharField(max_length=8, default="Not Found")
    Node_Memory = models.CharField(max_length=15, default="Not Found")
    Node_Disk = models.CharField(max_length=15, default="Not Found")
    history = HistoricalRecords()
    __history_date = None


    @property
    def _history_date(self):

        return self.__history_date

    @_history_date.setter
    def _history_date(self, value):
        value = datetime.today().strftime('%d-%m-%Y')
        self.__history_date = value

NOT NULL约束失败-Django简单历史记录中的自定义日期

0 个答案: