NodeJS to Postman Result - mysql

Question

Good Day how can i compute a public function to route and check it on Postman? here is my codes
router.post('/post_regular_hours/:employee_id/',function(request,response,next){
var id = request.params.employee_id;
var time_in = request.params.time_in;
var time_out = request.params.time_out;
// const timein = request.params.time_in;
// const timeout = request.params.time_out;
knexDb.select('*')
.from('employee_attendance')
.where('employee_id',id)
.then(function(result){
res.send(compute_normal_hours(response,result,diff))
})
});
function compute_normal_hours(res,result,diff){
let time_in = moment(time_in);
let time_out = moment(time_out);
let diff = time_out.diff(time_in, 'hours');
return diff;
}
I want the Diff to get posted on Postman as a result
Here is the App.js of my codes. How can i call the data from mysql query to the function and return the computed data on router post
or can you guys give the right terminologies for it.
var express = require('express');
var mysql= require('mysql');
var employee = require('./routes/employee');
var time_record = require('./routes/time_record');
var admin_employee = require('./routes/admin_employee');
var tar = require('./routes/tar');
var Joi = require('joi');
var app = express();
app.get('/hello',function(req,res){
var name = "World";
var schema = {
name: Joi.string().alphanum().min(3).max(30).required()
};
var result = Joi.validate({ name : req.query.name }, schema);
if(result.error === null)
{
if(req.query.name && req.query.name != '')
{
name = req.query.name;
}
res.json({
"message" : "Hello "+name + "!"
});
}
else
{
res.json({
"message" : "Error"
});
}
});
//Database connection
app.use(function(req, res, next){
global.connection = mysql.createConnection({
host : 'locahost',
user : 'dbm_project',
password : 'dbm1234',
database : 'dbm_db'
});
connection.connect();
next();
});
app.use('/', employee);
app.use('/employee', time_record);
app.use('/admin', admin_employee);
app.use('/tar', tar);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
// error handler
app.use(function(err, req, res, next) {
// set locals, only providing error in development
res.locals.message = err.message;
res.locals.error = req.app.get('env') === 'development' ? err : {};
// render the error page
res.status(err.status || 500);
res.render('error');
});
app.listen(8000,function(){
console.log("App started on port 8000!");
});
module.exports = app;
Here is the App.js of my codes. How can i call the data from mysql query to the function and return the computed data on router po

Answer 1

There are a few problems with your code.
Please see explanations in the respective code chunks.
router.post('/post_regular_hours/:employee_id/',function(request,response,next){
// If you're receiving a post request
// you'll probably want to check the body for these parameters.
let id = request.params.employee_id; // make sure the param names are matching with what you post.
// This one is special because you are passing it through the url directly
let time_in = request.body.time_in;
let time_out = request.body.time_out;
knexDb.select('*')
.from('employee_attendance')
.where('employee_id',id)
.then(function(result){
// you are not sending time_in and time_out here - but difference. but difference is not calculated.
// changed the function signature a bit - you weren't using the result at all? leaving this callback here because I'm sure you want to map the used time to some user?
return response.send(compute_normal_hours(time_in, time_out))
});
});
// this function was (and still might be) incorrect.
// You were passing res and result which neither of them you were using.
// You also had time_in and time_out which were going to be undefined in the function scope. Now that we are passing them in it should be ok. Updated it so you don't have the params you don't need.
function compute_normal_hours(time_in, time_out){
// What was diff - if it's the time difference name things correctly
// You had a diff parameter passed in (which you didn't compute), a diff function called below and another variable declaration called diff.
// you were not passing time_in or time_out parameters.
// you have moment here - are you using a library?
let time_in = moment(time_in);
let time_out = moment(time_out);
let diff = time_out.diff(time_in, 'hours');
return `Computed result is: ${diff}`;
}
Important Edit
Please search for all occurences of res.render (response.render) and replace them with something like res.send - res.render is looking for the template engine