Django相关对象引用模板

无法在HTML模板中显示通过外部键关系设置的相关对象引用.

这是目前为止的代码.

models.py:

class MprVw(models.Model):
    payloadid = models.TextField(db_column='payLoadID', blank=True, null=True)
    file = models.TextField(db_column='File', primary_key=True)
    class Meta:
        managed = False
        db_table = 'MPR_VW'


class MprWi(models.Model):
    id = models.TextField(db_column='id', primary_key=True)
    payloadid = models.TextField(db_column='payLoadID', blank=True, null=True)
    file = models.ForeignKey(MprVw, on_delete=models.DO_NOTHING, db_column='File')
    class Meta:
        managed = False
        db_table = 'MPR_WI'

Views.py:

def MPR(request):
  
  myDls = request.GET.get("dls")
  myMPR = MprVw.objects.filter(dls=myDls)
  myMprWi = MprWi.objects.select_related("file")
  context = {
    'myMPR': myMPR,
    'myMprWi': myMprWi,
    'myDls': myDls,
  }
  MPR = loader.get_template('MPR.html')
  return HttpResponse(MPR.render(context, request))

Html:

                {% for rowmyMPR in myMPR.mprwi_set.all %}
                <tr>
                    <td>{{ rowmyMPR.file }} 
                        {{ rowmyMPR.id }} 
                    </td>
                </tr>
                {% endfor %}

我希望显示myMprWi中的行数据，这些行数据是myMPR父文件的子记录.数据周围显示有"MprVw Object()".我怎么才能摆脱它呢？

例如: MprVw对象(&lt；the row file number&gt；) &lt；the row id number&gt；