我有一个 graphene-python DjangoObjectType 类,我想添加一个自定义类型,但是我不知道如何在resolver函数中获取当前模型实例。我正在关注this tutorial,但找不到任何参考。
这是我的 DjangoObjectTypeClass :
class ReservationComponentType(DjangoObjectType):
component_str = graphene.String()
class Meta:
model = ReservationComponent
def resolve_component_str(self, info):
# How can I get the current ReservationComponent instance here?. I guess it is somewehere in 'info',
# but documentation says nothing about it
current_reservation_component = info.get('reservation_component')
component = current_reservation_component.get_component()
return component.name
我的问题与Graphene resolver for an object that has no model不同,因为我的对象具有模型。我不知道为什么将其标记为“可能重复”并具有如此明显的区别。我的问题确实是基于模型的。
答案 0 :(得分:0)
是的,它位于info
中的某个位置,即这里:
type_model = info.parent_type.graphene_type._meta.model
但是,如果您使用DjangoObjectType
,则实例将传递到self
。因此,您可以采用另一种方式:
class ReservationComponentType(DjangoObjectType):
component_str = graphene.String()
class Meta:
model = ReservationComponent
def resolve_component_str(self, info):
# self is already an instance of type's model (not sure if it is in all cases):
component_class = self.__class__
current_reservation_component = info.get('reservation_component')
component = current_reservation_component.get_component()
return component.name