node.js - Is there a way in mongoose create global instance call for all Schemas? -

i know possible create instance method each schema, there way of creating instance call relates schemas.

you may want create function , function want use schema.

if have understood requirement need create function in separate file , add file schema plugin.

for example:

in lastupdate.js file create function function use different schema

module.exports = exports = function lastupdateplugin (schema) {   schema.add({ updatetime: date })    schema.pre('save', function (next) {     this.updatetime= new date     next()   }); } 

in user.js schema file:

var lastupdate = require('./lastupdate');//load lastupdate.js file var user= new schema({name: string, ... }); user.plugin(lastupdate); 

in bank.js schema file:

var lastupdate = require('./lastupdate');//load lastupdate.js file var bank= new schema({bankname: string, ... }); bank.plugin(lastupdate); 

then when save user , bank automatically update updatetime each schema