将DjangObjectType和ObjectType组合起来

我有一个简单的django模型，带有一个计算属性字段

clicks

。模型如下所示：

class Link(models.Model):
    url = models.URLField()

    @property
    def clicks(self):
        """
        Property does some calculations and returns a list of dictionaries:

        """
        # removed calculation for simplicity
        return [{'dt': 1, 'clicks': 100}, {'dt': 2, 'clicks': 201}] 

{
  id: 3,
  url: "www.google.de",
  clicks: [
    dt: 1, clicks: 100},
    dt: 2, clicks: 201}
  ]
}

class LinkType(DjangoObjectType):
    clicks = graphene.List(Stats)

    class Meta:
        model = Link

    def resolve_clicks(self, info):
        return [Stats(dt=click_dict['dt'], clicks=click_dict['clicks') for click_dict in self.clicks]

我想让这个模型在我的graphql端点中可访问。因此，我创建了以下类型和查询：

class Stats(graphene.ObjectType):
    clicks = graphene.String()
    dt = graphene.String()


class LinkType(DjangoObjectType):
    clicks = graphene.List(Stats, source='clicks')

    class Meta:
        model = Link


class Query(object):
    link = graphene.Field(LinkType, id=graphene.Int())

    def resolve_link(self, info, **kwargs):
        id = kwargs.get('id')
        url = kwargs.get('url')
        if id is not None:
            return Link.objects.get(pk=id)
        return None

现在，我应该能够在graphql资源管理器中使用以下查询：

{
  link(id: 3) {
    id,
    url,
    clicks{
      clicks,
      dt
    }
  }
}

我的预期结果如下：

class Link(models.Model):
    url = models.URLField()

    @property
    def clicks(self):
        """
        Property does some calculations and returns a list of dictionaries:

        """
        # removed calculation for simplicity
        return [{'dt': 1, 'clicks': 100}, {'dt': 2, 'clicks': 201}] 

{
  id: 3,
  url: "www.google.de",
  clicks: [
    dt: 1, clicks: 100},
    dt: 2, clicks: 201}
  ]
}

class LinkType(DjangoObjectType):
    clicks = graphene.List(Stats)

    class Meta:
        model = Link

    def resolve_clicks(self, info):
        return [Stats(dt=click_dict['dt'], clicks=click_dict['clicks') for click_dict in self.clicks]

但是

单击

和

dt

的嵌套值是

null

：

{
  id: 3,
  url: "www.google.de",
  clicks: [
    dt: null, clicks: null},
    dt: null, clicks: null}
  ]
}

那么我做错了什么？如何将DICT列表转换为graphene中的ObjectType

编辑： 我使用了@mark chackerian answer的修改版本来解决这个问题： 似乎我对石墨烯的“魔力”期望太高了，我必须明确地告诉它每个领域是如何解决的

class Stats(graphene.ObjectType):
    clicks = graphene.String()
    dt = graphene.String()

    def resolve_clicks(self, info):
        return self['clicks']

    def resolve_dt(self, info):
        return self['dt']

---

您必须更明确地告诉graphene如何制作

Stats

对象列表

试着这样做：

class Link(models.Model):
    url = models.URLField()

    @property
    def clicks(self):
        """
        Property does some calculations and returns a list of dictionaries:

        """
        # removed calculation for simplicity
        return [{'dt': 1, 'clicks': 100}, {'dt': 2, 'clicks': 201}] 

{
  id: 3,
  url: "www.google.de",
  clicks: [
    dt: 1, clicks: 100},
    dt: 2, clicks: 201}
  ]
}

class LinkType(DjangoObjectType):
    clicks = graphene.List(Stats)

    class Meta:
        model = Link

    def resolve_clicks(self, info):
        return [Stats(dt=click_dict['dt'], clicks=click_dict['clicks') for click_dict in self.clicks]