每當我嘗試從 django admin 訪問我的模型“Youtube”時，它都會向我顯示此錯誤。我感覺到我在方法YoutubeAdmin內部搞砸了getCountry。我該如何解決這個問題？找不到辦法。它 model Youtube doesn't have a filed getCountry在錯誤中說。我的模型：class Youtube(models.Model):    link = models.CharField(max_length=2000)    scrap_interval_hour = models.IntegerField(default=8)    last_scrapped_datetime = models.DateTimeField(blank=True, null=True)    is_feed = models.BooleanField(default=False)    created_date = models.DateField(        auto_now_add=True)    # Foriegn Key    country = models.ForeignKey(Country, on_delete=models.CASCADE)    class Meta:        ordering = ('created_date', )行政from django.contrib import adminfrom fpn.models import Youtubefrom datetime import timedeltaclass YoutubeAdmin(admin.ModelAdmin):    def get_fields(self, request, youtube=None):        fields = super(YoutubeAdmin, self).get_fields(request, youtube)        fields.remove('last_scrapped_datetime')        if youtube:            fields.remove('country')        return fields    model = Youtube    list_per_page = 10    list_display = ('link', 'is_feed',                    'getCountry', 'last_scrapped_datetime')    list_filter = ('country', 'is_feed', )    def getCountry(self, obj):        return "\n".join([coun.name for coun in obj.country.all()])