Filter with Mongoose Schema

filterExample.js

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

// Create Simple Post Schema
var Post = new Schema({
  owner: { type: Schema.Types.ObjectId, ref: 'User' },
  createdAt: { type: Date, default: new Date(), required: true },
  message: { type: String }
});

// Filter Feature with limit, before, since
Post.prototype.filter = function(query, limit, before, since){
// Set default limit to 25
if ( limit == null ) limit = 25;
var que = this.find(query);
if( before ) que = que.where("_id").lt(before);
if( before ) que = que.where("_id").gt(after);
// Return matched query
return que.limit(limit);

}

About

Use to limit result of queried data from MongoDB

Parameters

• query is query object use find on database
• limit is return limit of found result
• before is an object_id use to find items before that id is create
• after is an object_id use to find items after that id is created