I new to express. Now i am working in mongodb connection and CRUD activity. I created a connection in connection.js. And i get the database instance in app.js. The same DB instance i need to share register, login and some other modules without calling connection.js in these modules again. Or i need the proper answer to resuse connection in multiple modules in express.
Thanks in Advance,
You can setup a db module like so:
// db.js
let _db;
module.exports = {
getDb,
initDb
};
function initDb(callback) {
//connect to db and set _db to the new connection.
}
function getDb() {
assert.ok(_db, "Db has not been initialized. Please called init first.");
return _db;
}
Then somewhere in your app initialization you can do:
//app.js
const dbmodule = require("./db.js");
initDb(function(err){
// more app init;
});
then in your other modules, say login.js, do:
//login.js
const dmModule = require("./db")
const db = dbModule.getDb() //at this point the db should have been initialized.
