我的问题是读取嵌套对象的属性,该对象位于其他嵌套对象中。
GraphQL
type Mapping {
id: ID!
partnerSegmentId: ID!
ctSegmentId: CtSegment!
}
type PartnerSegment {
id: ID!
name: String!
platformId: Int!
partner: Partner!
}
type Partner {
id: ID!
name: String!
}
一旦我尝试查询它:
{
allMappings {
partnerSegmentId {
id
name
partner {
id
}
}
}
}
我接受了:
{
"data": {
"allMappings": [
null
]
},
"errors": [
{
"message": "Cannot return null for non-nullable field Partner.name.",
"locations": [
{
"line": 8,
"column": 9
}
],
"path": [
"allMappings",
0,
"partnerSegmentId",
"partner",
"name"
]
}
]
}
映射架构
const mappingSchema = new mongoose.Schema(
{
partnerSegmentId: {
type: mongoose.Schema.Types.ObjectId,
ref: 'PartnerSegment',
required: [true, 'Mapping must have partner segment id.']
},
ctSegmentId: {
type: mongoose.Schema.Types.ObjectId,
ref: 'CtSegment',
required: [true, 'Mapping must have CT segment id.']
}
},
{ timestamps: true }
);
我尝试单独阅读Partner,PartnerSegment和Mapping模型。一切正常。知道我应该在哪里搜索问题的来源吗?我已经检查了mongodb文档和ids看起来没问题。我想这是我模特的错。
如果你想仔细看看project repo。
答案 0 :(得分:1)
<强> SOLUTION:强>
返回值中的垃圾ID是由嵌套实体中的不填充填充引起的。我设法解决问题的方式:
const allMappings = () =>
Mapping.find({})
.populate('user')
.populate('ctSegment')
.populate({
path: 'partnerSegment',
populate: {
path: 'partner'
}
})
.exec();