[英]Graphene-Django nested filters (relay)
I'm trying to achieve the following using graphene-django's DjangoFilterConnectionField
: 我正在尝试使用graphene-django的
DjangoFilterConnectionField
实现以下DjangoFilterConnectionField
:
{
allUsers(username_Icontains: "abc") {
edges {
node {
id
demographics (name_Icontains: "xyz") {
id
name
}
}
}
}
}
I know that in graphene django, it's possible to have nested filtering using graphene's List But I'm not sure if I can work this out using DjangoFilterConnectionField
. 我知道在graphene django中,可以使用graphene的List进行嵌套过滤,但是我不确定是否可以使用
DjangoFilterConnectionField
解决此问题。
I have the following graphene (relay) schema: 我有以下石墨烯(中继)架构:
class UserNode(DjangoObjectType):
class Meta:
model = User
interfaces = (Node,)
filter_fields = {
'username': ['exact', 'icontains', 'in'],
}
class DemographicNode(DjangoObjectType):
class Meta:
model = Demographic
interfaces = (Node,)
filter_fields = {
'name': ['icontains'],
}
class Query(ObjectType):
user = Node.Field(UserNode)
all_users = DjangoFilterConnectionField(UserNode)
demographic = Node.Field(DemographicNode)
all_demographics = DjangoFilterConnectionField(DemographicNode)
In the docs it's suggested to introduce each filter on the connected node as well. 在文档中 ,建议在连接的节点上也引入每个过滤器。 So it would be like this:
所以会像这样:
class UserNode(DjangoObjectType):
class Meta:
model = User
interfaces = (Node,)
filter_fields = {
'username': ['exact', 'icontains', 'in'],
'demographic__name': ['icontains']
}
But I think there must be a better way to do this since I have to do this for more than 20 nested Nodes. 但是我认为必须有更好的方法来执行此操作,因为我必须对20个以上的嵌套节点执行此操作。
I think you have OneToOneField between this two model, if it's true, you can't have something like that because it's not logical 我认为您在这两个模型之间有一个OneToOneField,如果的确是这样,则不能有类似的内容,因为它不合逻辑
imagine that, if a user has a Demographic, and you retrieve allUsers, then for each one, we have one Demographic and it's not logical to filter one Demographic. 想象一下,如果一个用户有一个人口统计信息,而您检索了allUsers,那么对于每个用户,我们都有一个人口统计信息,并且过滤一个人口统计信息是不合逻辑的。 the only way to do this is to filter it with the UserNode(as you said and did)
做到这一点的唯一方法是使用UserNode对其进行过滤(如您所说和所做的)
the Nested filtering just work if you have a ForeignKey or ManyToManyField to user model and then you can retrieve that in user with the separate filter 如果您要对用户模型使用ForeignKey或ManyToManyField,则嵌套过滤就可以工作,然后可以使用单独的过滤器在用户中检索
I hope I've been able to make it clear to you 希望我能向您说明
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