Best practice to accessing mysql database by nodejs - mysql

Question

Currently I'm running a node js backend with express to access the mysql database from the client. Now I'm refactoring my code to put the "fat" things from the client also to the nodejs backend.
My first idea is to keep the express route like:
ModuleA:
router.get('/getitem/:code',(req, res) => {
let sql = `SELECT * FROM xyz WHERE CODE = ${req.params.code}`;
let query = db.query(sql, (err, result) =>{
if(err == null){
console.log(result);
res.send(result);
}else{
console.log("Error by getting item from db: " + err);
throw err;
}
});
});
And access it via http request by a other module if needed:
function geodataByLocationcode(locationcode){
request({
method: 'GET',
url: "http://" + server_connection.host + ":" + server_connection.port + '/getitem/' + locationcode,
headers: {
"Content-Type": "application/json"
}
},function(error, response, body){
....
}
But is this the best method to do this?
Or would it be better to access the db in a more direct way
since the request now also comes from the backend?

Answer 1

You can find a good example how to use MySql and Node.js using native drivers (without any query builder like knex or ORM like bookshelf).
Dependencies:
expressjs 4.x
mysql2
expressjs 4.x
The core concepts are:
Have a separate file to handle database connection (https://github.com/Talento90/organization-api/blob/master/organizations-api/src/database.js)
Always use a connection pool
Separate the database logic from the API controllers (it makes them decoupled from database and easier to test)
If you are using the latest version of Node.js also shows you how to use async/await with express.js and mysql
Example: https://github.com/Talento90/organization-api/tree/master/organizations-api/src