MongoDB / Mongoose timestamps not updating

Question

Schema:

var schema = new Schema({...}, {
    timestamps: true,
    id: false,
    toJSON: {
        virtuals: true,
    },
    toObject: {
        virtual: true,
    }
});
schema.virtual('updated').get(function () {
    if(typeof this.updatedAt === "undefined" && typeof this.createdAt === "undefined") return "";
    var updated = (typeof this.updatedAt === "undefined") ? this.createdAt : this.updatedAt;
    return "Updated "+moment(updated).fromNow();
});

This code was working recently - updatedAt for a particular instance comes up as August 24th, however any new edits to the document doesn't update the timestamp.

Feels like I'm missing something very silly here.

Answer 1

Can try by modify your schema like:

var schema =new Schema({..}, 
           { timestamps: { createdAt: 'createdDate',updatedAt: 'updatedDate' } 
});

for this schema timestmps will update on save(), update() and findOneAndUpdate(). so no need schema.virtual('updated')...

Process-2

added createdDate and updatedDate with Date type in your schema and update these date fields using schema plugin.

like:

var mongoose = require('mongoose'),
    Schema   = mongoose.Schema,
    SchemaPlugin = require('../helpers/schemaPlugin');
  var schema =new Schema({..},
    createdDate: {
      type: Date,
      default: Date.now
    },
    updatedDate: {
      type: Date,
      default: Date.now
    }
  });

  schema.plugin(SchemaPlugin);

in schemaPlugin.js file:

module.exports = function(schema) {

  var updateTimestemps = function(next){
    var self = this;


    if(!self.createdAt) {
      self.createdDate = new Date();
      //or self.update({},{ $set: { createdDate : new Date(), updatedDate: new Date() } });
    } else {
      self.updatedDate= new Date();
      //or self.update({},{ $set: {updatedDate: new Date() } });
    }
    next();
  };

  schema.
    pre('save', updateTimestemps ).
    pre('update', updateTimestemps ).
    pre('findOneAndUpdate', updateTimestemps);
};