graphene-mongo and nested json data - mongodb

Question

i have the follow two documents in mongo:
> db.user.find();
{ "_id" : ObjectId("623d12f5ee5204c41f028944"), "uid" : "you", "uid_number" : 5678, "eppns" : [ "you#x.com", "y.com" ], "props" : { "one" : 1, "two" : 2 } }
{ "_id" : ObjectId("623d1310ee5204c41f028945"), "uid" : "me", "uid_number" : 123, "eppns" : [ "me#x.com", "me#y.com" ], "props" : { "one" : 3, "two" : 3 } }
defined with
from mongoengine import Document
from graphene_mongo import MongoengineObjectType
from mongoengine.fields import (
FloatField,
IntField,
DictField,
StringField,
EmailField,
ListField,
URLField,
ObjectIdField,
)
from graphene import ObjectType, Schema, List, Field
from graphene.relay import Node
class User(Document):
meta = { 'collection': 'user' }
ID = ObjectIdField()
uid = StringField(required=True)
uid_number = IntField(required=True)
eppns = ListField( EmailField() )
props = DictField()
class UserType(MongoengineObjectType):
class Meta:
model = User
class Query(ObjectType):
node = Node.Field()
users = List(UserType)
def resolve_users(self, info, **kwargs):
return User.objects.all()
yet, when i query as such:
{ users { id eppns uid uidNumber props } }
i get the following:
{
"data": {
"users": [
{
"id": "623d12f5ee5204c41f028944",
"eppns": [
"you#x.com",
"you#y.com"
],
"uid": "you",
"uidNumber": 5678,
"props": "{\"one\": 1.0, \"two\": 2.0}"
},
{
"id": "623d1310ee5204c41f028945",
"eppns": [
"me#x.com",
"me#y.com"
],
"uid": "me",
"uidNumber": 123,
"props": "{\"one\": 3.0, \"two\": 3.0}"
}
]
}
}
ie, it does not render props as json, but as a string. how can i get props to render/resolve as a dict? i would prefer not to define props as another Document and $ref it.

Answer 1

getting the same problem and I found a possible solution with graphene_django and it solved my problem.
You just need to override your props field with GenericScalar in your UserType:
from graphene.types.generic import GenericScalar # solution
class UserType(MongoengineObjectType):
props = GenericScalar()
class Meta:
model = User