1   ProjectMetadata.findOne({id:req.params.prjId})
2    .populate(
3        [{
4        path:'tasks',
5        model:TaskMetadata,
6        populate:[{
7            path:'assigned_to',
8            model:User,
9            select:'name employee_id'
10        },
11        {
12            path:'priority',
13            model:Priority,
14            select:'id title'
15        }],
16        select:"task_name id code assign_to stage priority_id"
17    },
18    {
19        path:'client',
20        model:Client,
21        select:"client_name"
22    },
23    {
24        path:'prjct_mgr',
25        model:User,
26        select:"name"
27    },
28    {
29        path:'acc_exec',
30        model:User,
31        select:'name employee_id'
32    },
33    {
34        path:'poc',
35        model:User,
36        select:'name employee_id'
37    },
38    {
39        path:'prj_type',
40        model:ProjectType,
41        select:"type -_id"
42    }
43
44])