过滤django admin中点亮的下拉列表中的字段

Question

我有一个非常简单的django模型:

class Car(models.Model):
   carname = models.CharField(max_length=100)
   carmodel = models.CharField(max_length=100)
   carcountry = models.CharField(max_length=100)
   caryear = models.CharField(max_length=100)
       cardesc = models.TextField()

以及显示所有记录的admin.py:

class UserForm(forms.ModelForm):
    cardesc = forms.CharField(widget=forms.Textarea(attrs={'cols': 120, 'rows': 20}))

class Meta:
    model = Cars


  class ModelAdmin(admin.ModelAdmin ):
     form = UserForm



  admin.site.register(Cars,ModelAdmin)

它工作正常.现在,我的问题是:我想要一个下拉列表,我可以选择汽车模型,然后根据我的选择过滤我的结果...

我怎么能这样做？我要编辑Admin.py文件？Django有内置功能吗？或者我必须创建一个HTML模板？怎么样？请帮我.

Answer 1

试试这个 .

class CustomForm(forms.ModelForm):

    class Meta:
        model = Cars

    cars_list = Cars.objects.values_list('carmodel', flat=True).order_by('carmodel').distinct()
    choice_list = []
    for car in cars_list:
        choice_list.append((car,car,)) 
    CAR_CHOICES = choice_list

    #Used 'ChoiceField' as you want dropdown list for carmodels stored in text fields 
    carmodel = forms.ChoiceField(widget=forms.Select, choices=CAR_CHOICES)

class CarsModelAdmin(model.ModelAdmin):
    form = CustomForm
    list_filter = ['carmodel']

admin.site.register(Cars,CarsModelAdmin)