Question

我正在尝试列出按用户位置距离排序的地方，我收到空查询错误。我的模型在models.py中被定义为

    Sub testing()
        Dim cn As Object
        Dim rs As Object
        Dim sql As String
        Dim wb As Workbook
        Dim wsEndTarget As Worksheet

        Set wb = ThisWorkbook
        Set wsEndTarget = wb.Sheets("Sheet3")
        Set cn = CreateObject("ADODB.Connection")
        With cn
            .Provider = "Microsoft.ACE.OLEDB.12.0"
            .connectionString = "Data Source=" & _   
            "C:\Users\xxxxx\Documents\sqlSheet.xlsm" & ";" & _
            "Extended Properties=""Excel 12.0 Xml;HDR=YES"";"
            .Open
        End With

        sql = "SELECT * FROM [Sheet2$] WHERE Rating = 'WBS PWT'"

        Set rs = CreateObject("ADODB.Recordset")
        rs.Source = sql
        rs.ActiveConnection = cn
        rs.Open sql

        wsEndTarget.Activate
        For iCols = 0 To rs.Fields.Count - 1
            wsEndTarget.Cells(1, iCols + 1).Value = rs.Fields(iCols).Name
        Next
        wsEndTarget.Range(wsEndTarget.Cells(1, 1), _
            wsEndTarget.Cells(1, rs.Fields.Count)).Font.Bold = True
        wsEndTarget.Range("A2").CopyFromRecordset rs

        wb.Close
        rs.Close
        cn.Close
        Set wb = Nothing
        Set wsEndTarget = Nothing
        Set cn = Nothing
        Set rs = Nothing
    End Sub

并在我的views.py中尝试过：

class Place(models.Model):
    name = models.CharField(max_length=200)
    id = models.UUIDField(primary_key=True, default=uuid.uuid4, help_text="Unique ID for this particular shop across whole library")
    location = gis_models.PointField("longitude/latitude",
                                 geography=True, blank=False, null=True)

    #objects = gis_models.GeoManager()

    def __unicode__(self):
        return self.name, 'location'


class User(AbstractUser):
"""User model."""

username = None
email = models.EmailField(_('email address'), unique=True)
maplocation = gis_models.PointField("longitude/latitude", geography=True, blank=False, null=True)

当我尝试打开我的网页时出现此错误

@login_required
def home(request):
    """
    View function for home page.
    """
    place_list = Place.objects.all()
    user = User.objects.get(email=request.user)
    ref_location = user.maplocation

    place_ordered = (Place.objects.annotate(distance=D(('location', ref_location)))
                                  .order_by('distance'))

    return render(
        request,
        'home.html',
        context={'place_list':place_list, 'place_ordered': place_ordered},
    )

TypeError：QuerySet.annotate（）收到非表达式：0.0 m

0 个答案: