我创建了一个模型' VehicleDetails'用户可以在其中填写车辆和其他模型的详细信息“TripStatus”#39;他可以在其中更新车辆位置。我想获得我在下面的代码中所做的最新位置。但是当我运行服务器时,它返回的所有值都不是最新值。我希望帮助我解决这个问题或建议一种新的方法。
models.py:
class VehicleDetails(models.Model):
Vehicle_No = models.CharField(max_length=20)
class TripStatus(models.Model):
vehicledetails = models.ForeignKey(VehicleDetails, related_name='tripstatuss')
CHOICES = (('Yet to start', 'Yet to start'),('Trip starts', 'Trip starts'), ('Chennai','Chennai'), ('Vizag', 'Vizag'), ('Kolkata', 'Kolkata'))
Vehicle_Status = models.CharField(choices=CHOICES, default="Yet to start", max_length=20)
statustime = models.DateTimeField(auto_now=False, auto_now_add=True)
的观点:
def status(request):
tripstatus = TripStatus.objects.all().latest('statustime')
context = {
"tripstatus": tripstatus,
}
return render(request, 'loggedin_load/active_deals.html', context)
模板:
{% for status in vehicledetails.tripstatuss.all %}
{{status.Vehicle_Status}}
{% endfor %}
答案 0 :(得分:0)
只需删除.all():
tripstatus = TripStatus.objects.latest('statustime')
或者也许:
tripstatus = TripStatus.order_by('-statustime').first()