populate mongoose co-related schema for tree-view - node.js

Question

I have created following mongoose schema
workspace-model.js
var mongoose=require('mongoose')
var uniqueValidator=require('mongoose-unique-validator');
var workspaceSchema=new mongoose.Schema({
name:{type: String, lowercase: true, required: [true, "can't be blank"],
//match: [/^[a-zA-Z0-9]$/, 'is invalid'],
index: true,
unique: true
},
processes:[{type:mongoose.Schema.Types.ObjectId,ref:'Process'}],
},{timestamp:true})
workspaceSchema.plugin(uniqueValidator,{message:'is already taken'});
module.exports=mongoose.model('Workspace',workspaceSchema)
process-model.js
var mongoose=require('mongoose')
var uniqueValidator=require('mongoose-unique-validator')
var processSchema=new mongoose.Schema({
name:{type: String, lowercase: true, required: [true, "can't be blank"],
//match: [/^[a-zA-Z0-9]$/, 'is invalid'],
index: true,
unique: true
},
state:String, //enabled/disabled/started/stopped/checkin/checkout/starting/stopping
queues:[{type:mongoose.Schema.Types.ObjectId,ref:'Queue'}],
workspace:{type:mongoose.Schema.Types.ObjectId,ref:'Workspace'}
},{timestamp:true})
processSchema.plugin(uniqueValidator,{message:'is already taken'});
module.exports=mongoose.model('Process',processSchema)
queue-model.js
var mongoose=require('mongoose')
var uniqueValidator=require('mongoose-unique-validator');
var queueSchema=new mongoose.Schema({
name:{type: String, lowercase: true, required: [true, "can't be blank"],
//match: [/^[a-zA-Z0-9]$/, 'is invalid'],
index: true,
unique: true
},
type:String, //start//end/custom/decision/split/join
prev:{type:mongoose.Schema.Types.ObjectId,ref:'Queue'},
next:{type:mongoose.Schema.Types.ObjectId,ref:'Queue'},
workitems:[{type:mongoose.Schema.Types.ObjectId,ref:'Workitem'}],
process:{type:mongoose.Schema.Types.ObjectId,ref:'Process'}
},{timestamp:true})
queueSchema.plugin(uniqueValidator,{message:'is already taken'});
module.exports=mongoose.model('Queue',queueSchema)
workitem-model.js
var mongoose=require('mongoose')
var uniqueValidator=require('mongoose-unique-validator');
var workitemSchema=new mongoose.Schema({
status:String, //locked//processing//done//available
lockedby:String,
queue:{type:mongoose.Schema.Types.ObjectId,ref:'Queue'},
process:{type:mongoose.Schema.Types.ObjectId,ref:'Process'}
},{timestamp:true})
//workitemSchema.plugin(uniqueValidator,{message:'is already taken'});
module.exports=mongoose.model('Workitem',workitemSchema)
like to populate the data in the following tree-view format
workspace ->[process]-->[queue]-->[workitem]
tried following but all sub paths and array items) are not getting populating.
...
var Process=require('./models/process-model')
var Workspace=require('./models/workspace-model')
var Workitem=require('./models/workitem-model')
var Queue=require('./models/queue-model')
Workspace.findOne({name:'dummy'}).populate({
path: 'processes',
// Get friends of friends - populate the 'friends' array for every friend
populate: { path: 'queues' }
}).exec().then((data)=>{console.log(data})
following is sample data file..
workspace
{
"_id": ObjectId("59f313665087dc2648ab2dc1"),
"name": "dummy",
"processes": [
ObjectId("59f313665087dc2648ab2dc2")
],
"__v": 1
}
process {
"_id": ObjectId("59f313665087dc2648ab2dc2"),
"workspace": ObjectId("59f313665087dc2648ab2dc1"),
"state": "enabled",
"name": "outward",
"queues": [
ObjectId("59f3312ee9bbaa27e032f55b"),
ObjectId("59f3312ee9bbaa27e032f55c"),
ObjectId("59f3312ee9bbaa27e032f55d")
],
"__v": 1
}
queue {
"_id": ObjectId("59f3312ee9bbaa27e032f55c"),
"process": ObjectId("59f313665087dc2648ab2dc2"),
"type": "custom",
"name": "data entry",
"workitems": [],
"__v": 0,
"next": ObjectId("59f3312ee9bbaa27e032f55d"),
"prev": ObjectId("59f3312ee9bbaa27e032f55b")
} {
"_id": ObjectId("59f3312ee9bbaa27e032f55d"),
"process": ObjectId("59f313665087dc2648ab2dc2"),
"type": "end",
"name": "work exit",
"workitems": [],
"__v": 0,
"prev": ObjectId("59f3312ee9bbaa27e032f55c")
} {
"_id": ObjectId("59f3312ee9bbaa27e032f55b"),
"process": ObjectId("59f313665087dc2648ab2dc2"),
"type": "start",
"name": "work introduction",
"workitems": [
ObjectId("59f33b3b99506b25f033ecf5")
],
"__v": 1,
"next": ObjectId("59f3312ee9bbaa27e032f55c")
}
workitem {
"_id": ObjectId("59f33b3b99506b25f033ecf5"),
"status": "available",
"__v": 0,
"process": ObjectId("59f313665087dc2648ab2dc2"),
"queue": ObjectId("59f3312ee9bbaa27e032f55b")
}
Please help .
Thanks in advance..

Answer 1

The problem was that the console.log was unable to print after 2-3 nested level.
solution is as follows
var util = require('util')
.....
//following line will print nested objects
console.log(util.inspect(data, false, null))
....