How to update a array value in Mongoose

Question

I want to update a array value but i am not sure about the proper method to do it ,so for i tried following method but didnt worked for me.

My model, The childre

Answer 1

can follow this

if childrens contains string values then model can be like:

childrens: [{
    type : String
}]

if childrens contains ObjectId values of another collection _id and want populate then model can be like:

childrens: [{
    type : mongoose.Schema.Types.ObjectId,
    ref: 'refModelName'
}]

no need to use $set just use $push to insert value in childrens array. so query can be like:

Employeehierarchy.update(
   { _id: employeeparent._id},
   {"$push": { "childrens": employee._id } }
 ).exec(function (err, managerparent) {
    //
 });