GraphQL 新手在这里。所以我试图在 Django 中使用石墨烯编写一个模式，它将国家参数作为字符串和时间参数作为字符。该查询与“时间”参数一起工作正常，但每当我添加“国家”参数时。它引发以下错误"Unknown argument \"country\" on field \"allNews\" of type \"Query\".",。这是我的架构和类型：
类型：
class NewsType(DjangoObjectType):
class Meta:
model = News
fields = ('id', 'site_name', 'title', 'link', 'content', 'thumbnail', 'status', 'upvote', 'downvote', 'published_date',
'paper', 'created_date')
filter_fields = ['site_name', 'status', 'country']
interfaces = (CustomNewsNode, )
vote_status = DjangoFilterConnectionField(UserVoteNewsType)
def resolve_vote_status(self, info, user_id):
return self.uservotenews_set.filter(user_id=user_id)
架构：
class NewsTypeFilter(django_filters.FilterSet):
class Meta:
model = News
fields = ['id', 'site_name', 'title', 'link', 'content', 'thumbnail', 'status', 'upvote', 'downvote', 'published_date',
'paper', 'created_date']
class Query(graphene.ObjectType):
all_news = DjangoFilterConnectionField(
NewsType, filterset_class=NewsTypeFilter, time=graphene.String())
def resolve_all_news(self, info, **kwargs):
print(kwargs['country'])
env = environ.Env()
environ.Env.read_env()
HOURS_AFTER_NEWS_VISIBLE = env('HOURS_AFTER_NEWS_VISIBLE')
timeDiff = datetime.now() - timedelta(hours=int(HOURS_AFTER_NEWS_VISIBLE))
if kwargs['time']: # if user clicks on sort by button
if(kwargs['time'] == 'd'):
time = 1
elif (kwargs['time'] == 'w'):
time = 7
elif (kwargs['time'] == 'm'):
time = 30
elif (kwargs['time'] == 'y'):
time = 365
else:
time = 1000
end_of_give_time_period = datetime.now(
) - timedelta(days=int(HOURS_AFTER_NEWS_VISIBLE))
start_of_given_time_period = end_of_give_time_period - \
timedelta(days=time)
allNews = News.objects.order_by('created_date').filter(status=True,
created_date__lte=end_of_give_time_period, created_date__gte=start_of_given_time_period).order_by('-upvote')
else:
allNews = News.objects.order_by(
'-created_date').filter(status=True).filter(created_date__lte=timeDiff)
if 'country' in kwargs:
countryId = Country.objects.filter(
name=kwargs['country'][0]).values_list('pk', flat=True)
allNews = allNews.filter(country__in=[countryId[0]])
return allNews
但是每当我输入查询时，它都会返回以下错误：
询问：
query{
allNews (time :"w", country: "Bangladesh") {
edges{
node{
title
upvote
createdDate
}
}
}
}
输出：
{
"errors": [
{
"message": "Unknown argument \"country\" on field \"allNews\" of type \"Query\".",
"locations": [
{
"line": 2,
"column": 23
}
]
}
]
}