如何过滤Django'；s外键窗体下拉列表

我有一个用于编辑（更新）记录的表单，

Author

字段自动成为一个下拉列表，这很好，但是如何筛选此列表？ 例如，下拉列表将填充整个用户列表。如何筛选此列表，使其仅显示

isDevice==True

的项目

客户/型号.py

from django.contrib.auth.models import AbstractUser

class CustomUser(AbstractUser):
    isDevice = models.BooleanField(default = False)
    ...

class BuildQueue(models.Model):
    Author =  models.ForeignKey(CustomUser,blank=True, null= True, on_delete=models.CASCADE)
    ...

class BuildQueueEditForm(forms.ModelForm):
    class Meta:
        model = BuildQueue
        fields = ['Author','project', 'customer',]

class buildQueueEdit(LoginRequiredMixin,UpdateView):
    model = BuildQueue
    form_class = BuildQueueEditForm
    template_name = 'buildQueue_edit.html'

构建/模型.py

from django.contrib.auth.models import AbstractUser

class CustomUser(AbstractUser):
    isDevice = models.BooleanField(default = False)
    ...

class BuildQueue(models.Model):
    Author =  models.ForeignKey(CustomUser,blank=True, null= True, on_delete=models.CASCADE)
    ...

class BuildQueueEditForm(forms.ModelForm):
    class Meta:
        model = BuildQueue
        fields = ['Author','project', 'customer',]

class buildQueueEdit(LoginRequiredMixin,UpdateView):
    model = BuildQueue
    form_class = BuildQueueEditForm
    template_name = 'buildQueue_edit.html'

forms.py

from django.contrib.auth.models import AbstractUser

class CustomUser(AbstractUser):
    isDevice = models.BooleanField(default = False)
    ...

class BuildQueue(models.Model):
    Author =  models.ForeignKey(CustomUser,blank=True, null= True, on_delete=models.CASCADE)
    ...

class BuildQueueEditForm(forms.ModelForm):
    class Meta:
        model = BuildQueue
        fields = ['Author','project', 'customer',]

class buildQueueEdit(LoginRequiredMixin,UpdateView):
    model = BuildQueue
    form_class = BuildQueueEditForm
    template_name = 'buildQueue_edit.html'

视图.py

from django.contrib.auth.models import AbstractUser

class CustomUser(AbstractUser):
    isDevice = models.BooleanField(default = False)
    ...

class BuildQueue(models.Model):
    Author =  models.ForeignKey(CustomUser,blank=True, null= True, on_delete=models.CASCADE)
    ...

class BuildQueueEditForm(forms.ModelForm):
    class Meta:
        model = BuildQueue
        fields = ['Author','project', 'customer',]

class buildQueueEdit(LoginRequiredMixin,UpdateView):
    model = BuildQueue
    form_class = BuildQueueEditForm
    template_name = 'buildQueue_edit.html'

---

由于

UpdateView

也继承自

FormMixin

，因此在

buildQueueEdit

中，您可以覆盖表单实例化的位置以及修改表单字段的

queryset

的确切位置

class buildQueueEdit(LoginRequiredMixin,UpdateView):
    model = BuildQueue
    form_class = BuildQueueEditForm
    template_name = 'buildQueue_edit.html'

    def get_form(self, form_class=None):
        form = super().get_form(form_class)
        form.fields['Author'].queryset = CustomUser.objects.filter(isDevice=True)
        return form

更新

如果要更改下拉列表中显示的文本，可以覆盖

选项

，而不是

查询集

。这对我有用

form.fields['Author'].choices = [(item.id, item.equipmentName) for item in CustomUser.objects.filter(isDevice=True)]

---

成功了，谢谢您知道我现在如何更改下拉列表中的属性吗？它默认为用户名。我尝试对查询中的项使用类似于

query=CustomUser.objects.filter（isDevice=True）的for循环：form.fields['plannedAuthor'].queryset=item.equipmentName返回表单

它返回

“str”对象没有属性“all”

嘿@mrevgenx，知道如何将默认值设置为

无

？