获取 Mongo 集合字段的值代替 ObjectId

如何解决获取 Mongo 集合字段的值代替 ObjectId

collection{{
"_id":ObjectId("as123dhfud638djkj87"),field1:ObjectId("as123dhfud63843562"),field2:ObjectId("as123dhfud63893758"),field3:ObjectId("as123dhfud63803957")
},{
"_id":ObjectId("as123dhfud638djkj88"),field1:ObjectId("as123dhfud63843543"),field2:ObjectId("as123dhfud63893098"),field3:ObjectId("as123dhfud63800987")
}

字段的值引用其他集合的文档 每个对象 Id 引用不同的集合文档 我们需要编写一个查询来从该文档中获取特定的字段值

示例输出

{
"_id":ObjectId("as123dhfud638djkj87"),field1:"Karthik",field2:"CSE",field3:"21"
},field1:"Ramu",field2:"ECE",field3:"22"
}