如何使用.filter()/。get()来查看值是否在外部模型中以在Django中进行验证?

问题描述 投票:0回答:1

我从模型(EmployeeWorkAreaLog)中创建了一个表单,用户可以在其中输入员工编号,一旦他们按Enter / Leave,它将在数据库中搜索一个单独的模型(销售人员),以确保此人是有效的雇员,如果否,将从html一侧弹出一条消息,指出它无效。

现在,我正在尝试添加另一个约束,这样,如果员工不在'WF'团队中,那么它也会给出一个错误,并说要联系经理。我尝试从表单中执行此操作,但始终收到此错误:

int() argument must be a string, a bytes-like object or a number, not 'Salesman'

并且根据追溯,它来自if Salesman.objects.get(id=employee_number).count():

为什么会发生此错误?有没有更有效/更好的方法来检查员工团队?

models.py

class EmployeeWorkAreaLog(TimeStampedModel, SoftDeleteModel, models.Model):
    employee_number = models.ForeignKey(Salesman, on_delete=models.SET_NULL, null=True, blank=False)
    ...

    def __str__(self):
        return self.employee_number

我进行过滤的部分,因此只有Salesman的员工编号位于小部件的attrs下,如下所示

forms.py

class WarehouseForm(AppsModelForm):
    class Meta:
        model = EmployeeWorkAreaLog
        widgets = {
            'employee_number': ForeignKeyRawIdWidget(EmployeeWorkAreaLog._meta.get_field('employee_number').remote_field, site, attrs={'id':'employee_number_field'}),
        }
        fields = ('employee_number', 'work_area', 'station_number')

    def clean_employee_number(self):
        employee_number = self.cleaned_data.get('employee_number')

        if Salesman.objects.filter(id=employee_number).team is 'WF':
            raise forms.ValidationError(_("Employee not valid, please contact manager"))
        return employee_number

views.py

class EnterExitArea(CreateView):
    model = EmployeeWorkAreaLog
    template_name = "operations/enter_exit_area.html"
    form_class = WarehouseForm

    def form_valid(self, form):
        emp_num = form.cleaned_data['employee_number']
        area = form.cleaned_data['work_area']
        station = form.cleaned_data['station_number']

        if 'enter_area' in self.request.POST:
            form.save()
            return HttpResponseRedirect(self.request.path_info)

        elif 'leave_area' in self.request.POST:
            form.save()
            return HttpResponseRedirect(self.request.path_info)
python django validation django-forms
1个回答
1
投票

get()返回一个Salesman对象,而filter()返回一个查询集。

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