Graphql 阿波罗联盟模式,表示不完整
我有一个疑问:Graphql 阿波罗联盟模式,表示不完整,graphql,apollo-server,apollo-federation,Graphql,Apollo Server,Apollo Federation,我有一个疑问: getMyTransactions { id createdAt } 我得到了这个错误: "message": "Cannot return null for non-nullable field Transaction.createdAt.", "path": [ "_entities", 0, "createdAt" ], &q
getMyTransactions {
id
createdAt
}
我得到了这个错误:
"message": "Cannot return null for non-nullable field Transaction.createdAt.",
"path": [
"_entities",
0,
"createdAt"
],
"extensions": {
"code": "INTERNAL_SERVER_ERROR",
"serviceName": "XXX",
"query": "query($representations:[_Any!]!){_entities(representations:$representations){...on Transaction{createdAt}}}",
"variables": {
"representations": [
{
"__typename": "Transaction",
"id": "29bf75e5-b79e-4a7d-a021-84a8b5662aa8"
},
{
"__typename": "Transaction",
"id": "616f3f8a-3c81-4d2e-bce0-03d031a15062"
}
]
},
//etc
为什么variables.representations
缺少createdAt
值?当我直接查询DynamoDB时,我可以看到所有这两项的createdAt
值
我的模式如下:
extend type Transaction @key(fields: "id") {
id: ID! @external
}
type Query {
getMyTransactions: [Transaction!]!
}
另一个架构具有事务类型:
type Transaction @key(fields: "id") {
id: ID!
createdAt: String!
}