Question

由于出现索引超出数据库错误，导致出现索引超出范围错误。我怎么能引用它作为占位符只是空白。这是我的view.py：

class ProjectView(ListView):
template_name = 'project_portal/home.html'
queryset = Project.objects.all()

def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    context['project'] = Project.objects.all()
    context['impact_scenario'] = Update.objects.filter(project_id=2).filter(category=1).latest('update')
    context['support_model'] = Update.objects.filter(project_id=2).filter(category=2)[0]
    context['monitoring_status'] = Update.objects.filter(project_id=2).filter(category=3)[0]
    context['training'] = Update.objects.filter(project_id=2).filter(category=4)[0]
    context['service_rehearsal'] = Update.objects.filter(project_id=2).filter(category=5)[0]
    context['other_update'] = Update.objects.filter(project_id=2).filter(category=6)[0]
    return context

这些类别中的每一个都从数据库中提取数据，但是某些字段最初将为空白。在模型中，将null和blank设置为null，我希望这样做就足够了。我也尝试过使用：

context['other_update'] = Update.objects.filter(project_id=2).filter(category=6).latest('update')

希望可以解决问题，但事实并非如此。请问如何在视图中允许空白数据？

django，如何能够引用空白记录

0 个答案: