Getter not working on object schema in Mongoose - node.js

Question

This is my Mongoose schema:
const mongoose = require('mongoose');
const mongooseUniqueValidator = require('mongoose-unique-validator');
const mongooseTimestamp = require('mongoose-timestamp');
const Schema = mongoose.Schema;
const SectionSchema = new Schema({
name: {type: 'String', required: true},
system: {type: Schema.Types.ObjectId, required: true, ref: 'System'},
subsystem: {type: Schema.Types.ObjectId, required: true, ref: 'Subsystem'},
createdBy: {type: Schema.Types.ObjectId, required: true, ref: 'User'},
allowedUsers: [{
user: {type: Schema.Types.ObjectId},
actions: {type: 'String'},
_id: false
}],
}, {versionKey: 'versionKey'});
SectionSchema.plugin(mongooseTimestamp);
SectionSchema.plugin(mongooseUniqueValidator);
module.exports = mongoose.model('Section', SectionSchema);
the actions parameter save like this:
{"get":true,"post":true,"put":true,"delete":true}
I want to cast it to an object (in Moongoose find result), so I use getter:
const mongoose = require('mongoose');
const mongooseUniqueValidator = require('mongoose-unique-validator');
const mongooseTimestamp = require('mongoose-timestamp');
const Schema = mongoose.Schema;
const SectionSchema = new Schema({
name: {type: 'String', required: true},
system: {type: Schema.Types.ObjectId, required: true, ref: 'System'},
subsystem: {type: Schema.Types.ObjectId, required: true, ref: 'Subsystem'},
createdBy: {type: Schema.Types.ObjectId, required: true, ref: 'User'},
allowedUsers: [{
user: {type: Schema.Types.ObjectId},
actions: {type: 'String',get:toObject}, /* <------- */
_id: false
}],
}, {versionKey: 'versionKey'});
SectionSchema.plugin(mongooseTimestamp);
SectionSchema.plugin(mongooseUniqueValidator);
function toObject (v) { /* <------- */
return JSON.parse(v);
}
SectionSchema.set('toObject', { getters: true }); /* <------- */
SectionSchema.set('toJSON', { getters: true }); /* <------- */
module.exports = mongoose.model('Section', SectionSchema);
But I don't know why getter not working on object schema like allowedUsers.
The find request:
this.model.Section.find(filterParameters, {
_id: 0,
versionKey: 0
}).skip(offset).limit(limit).sort({createdAt: sort})
.populate('system', {_id: 0, name: 1})
.populate('subsystem', {_id: 0, name: 1})
.populate('createdBy', {_id: 0, username: 1})
.populate({
path: 'allowedUsers.user',
model: "User",
select: {username: 1, organization: 1, _id: 0},
populate: {
path: 'organization',
model: 'Organization',
select: {name: 1, _id: 0},
}
})
.exec((error, sections) => {
if (error) {
reject({
statusCode: "422",
message: error
});
} else if ((!sections || sections.length === 0)) {
reject({
statusCode: "404",
message: "No Result"
});
} else {
resolve({
data: sections,
filterParameters: filterParameters
});
}
});
Thanks for any idea...