我想用一个父级的嵌套子级读取树结构中的数据，我正在使用mongodb。 enter image description here
我希望从mongodb获得这种类型的预期数据
[
{
"_id": "5d1fd59b1d26b42b2fdecf69",
"email": "admin@admin",
"userName": "admin",
"parrentId": "5d1fd9a6f612542b8d72337d",
"childs": [
{
"_id": "5d1fd61af612542b8d723376",
"email": "test1@test.com",
"userName": "test1",
"parrentId": "5d1fd59b1d26b42b2fdecf69",
"childs": [
{
"_id": "5d1fd91af612542b8d723379",
"email": "test2@test.com",
"userName": "test2",
"parrentId": "5d1fd59b1d26b42b2fdecf69",
"childs": []
},
{
"_id": "5d1fd91af612542b8d723379",
"email": "test2@test.com",
"userName": "test2",
"parrentId": "5d1fd59b1d26b42b2fdecf69",
"childs": []
},
]
}
]
}
]
