[英]Mongoose sub-documents inside nested object
我有一个模式,它使用多个字段作为对数据库中其他 collections 的引用。
除了嵌套 object 中存在的子文档外,一切似乎都运行良好。
当我尝试将文档添加为对嵌套 object( metadata
)中特定键( role
)的引用时,而不是 ObjectId,整个 object 都会被保存。
这是我的模式:
class Metadata {
// THIS DOES NOT WORK FINE AND IT STORES THE COMPLETE OBJECT
// AND ALSO EMPTY ARRAY IS NOT CREATED UPON THE DOCUMENT CREATION
// WHICH IS DEFAULT BEHAVIOUR OF MONGOOSE
@Prop({
ref: 'Role',
type: [mongoose.Schema.Types.ObjectId]
})
roles: Role[];
}
@Schema({...})
export class User {
@Prop()
name: string;
@Prop()
password: string;
// This works fine and it only stores the ObjectId
@Prop({
ref: 'Favourite',
type: [mongoose.Schema.Types.ObjectId]
})
favourties: Favourite[]
@Prop({type: Metadata})
metadata: Metadata;
// WHEN THE SAME IS REMOVED OUT OF METADATA OBJECT, IT WORKS
// FINE AND STORES ONLY OBJECT ID
@Prop({
ref: 'Role',
type: [mongoose.Schema.Types.ObjectId]
})
roles: Role[];
}
我正在使用"@nestjs/mongoose": "^9.2.1"
和"mongoose": "^6.8.2"
。
如果要在元数据集合中嵌入对文档的引用,则应通过User
文档本身中的objectId
引用它。
@Schema({collection: 'metadata'})
class Metadata {
@Prop({
ref: 'Role',
type: [mongoose.Schema.Types.ObjectId]
})
roles: Role[];
}
@Schema({...})
export class User {
@Prop()
name: string;
@Prop()
password: string;
@Prop({
ref: 'Favourite',
type: [mongoose.Schema.Types.ObjectId]
})
favourties: Favourite[]
@Prop({
ref: 'Metadata',
type: [mongoose.Schema.Types.ObjectId]
})
metadata: Metadata;
}
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