I do not get an answer from module.exports









up vote
1
down vote

favorite












db.js



 pool.connect(function (err, client, done) 

client.query('SELECT id, user_id, name FROM public.chat;', function (err, 
 result) 
 if (err) console.log("error" + err.message);


 else 
 module.exports.res = result.rows[0];
 
 );

 );


file app.js 



 var con = require('./db/connect');

 console.log(con.res);


I'm getting the result undefined
,I don't understand, the reason is callback?






javascript







share|improve this question

















  • 1




    "the reason is callback" Basically yes. Instead your module should export a function which performs the query, and the caller can provide a callback. Look into promises as well.
    – Felix Kling
    Nov 10 at 18:06















up vote
1
down vote

favorite












db.js



 pool.connect(function (err, client, done) 

client.query('SELECT id, user_id, name FROM public.chat;', function (err, 
 result) 
 if (err) console.log("error" + err.message);


 else 
 module.exports.res = result.rows[0];
 
 );

 );


file app.js 



 var con = require('./db/connect');

 console.log(con.res);


I'm getting the result undefined
,I don't understand, the reason is callback?






javascript







share|improve this question

















  • 1




    "the reason is callback" Basically yes. Instead your module should export a function which performs the query, and the caller can provide a callback. Look into promises as well.
    – Felix Kling
    Nov 10 at 18:06













up vote
1
down vote

favorite









up vote
1
down vote

favorite











db.js



 pool.connect(function (err, client, done) 

client.query('SELECT id, user_id, name FROM public.chat;', function (err, 
 result) 
 if (err) console.log("error" + err.message);


 else 
 module.exports.res = result.rows[0];
 
 );

 );


file app.js 



 var con = require('./db/connect');

 console.log(con.res);


I'm getting the result undefined
,I don't understand, the reason is callback?






javascript







share|improve this question













db.js



 pool.connect(function (err, client, done) 

client.query('SELECT id, user_id, name FROM public.chat;', function (err, 
 result) 
 if (err) console.log("error" + err.message);


 else 
 module.exports.res = result.rows[0];
 
 );

 );


file app.js 



 var con = require('./db/connect');

 console.log(con.res);


I'm getting the result undefined
,I don't understand, the reason is callback?






javascript




javascript






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 10 at 17:58









Daheim

63




63







  • 1




    "the reason is callback" Basically yes. Instead your module should export a function which performs the query, and the caller can provide a callback. Look into promises as well.
    – Felix Kling
    Nov 10 at 18:06













  • 1




    "the reason is callback" Basically yes. Instead your module should export a function which performs the query, and the caller can provide a callback. Look into promises as well.
    – Felix Kling
    Nov 10 at 18:06








1




1




"the reason is callback" Basically yes. Instead your module should export a function which performs the query, and the caller can provide a callback. Look into promises as well.
– Felix Kling
Nov 10 at 18:06





"the reason is callback" Basically yes. Instead your module should export a function which performs the query, and the caller can provide a callback. Look into promises as well.
– Felix Kling
Nov 10 at 18:06













1 Answer
1






active

oldest

votes

















up vote
-1
down vote













Try this:



db.js:



module.exports = pool.connect(function (err, client, done) 
 client.query('SELECT id, user_id, name FROM public.chat;', function (err, result) 

 if (err) 
 console.log("error" + err.message);
 else 
 return result.rows[0];
 );
 );


app.js:



 var con = require('./db/connect');
 console.log(con());





share|improve this answer




















  • this not work(((((
    – Daheim
    Nov 10 at 19:19










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up vote
-1
down vote













Try this:



db.js:



module.exports = pool.connect(function (err, client, done) 
 client.query('SELECT id, user_id, name FROM public.chat;', function (err, result) 

 if (err) 
 console.log("error" + err.message);
 else 
 return result.rows[0];
 );
 );


app.js:



 var con = require('./db/connect');
 console.log(con());





share|improve this answer




















  • this not work(((((
    – Daheim
    Nov 10 at 19:19














up vote
-1
down vote













Try this:



db.js:



module.exports = pool.connect(function (err, client, done) 
 client.query('SELECT id, user_id, name FROM public.chat;', function (err, result) 

 if (err) 
 console.log("error" + err.message);
 else 
 return result.rows[0];
 );
 );


app.js:



 var con = require('./db/connect');
 console.log(con());





share|improve this answer




















  • this not work(((((
    – Daheim
    Nov 10 at 19:19












up vote
-1
down vote










up vote
-1
down vote









Try this:



db.js:



module.exports = pool.connect(function (err, client, done) 
 client.query('SELECT id, user_id, name FROM public.chat;', function (err, result) 

 if (err) 
 console.log("error" + err.message);
 else 
 return result.rows[0];
 );
 );


app.js:



 var con = require('./db/connect');
 console.log(con());





share|improve this answer












Try this:



db.js:



module.exports = pool.connect(function (err, client, done) 
 client.query('SELECT id, user_id, name FROM public.chat;', function (err, result) 

 if (err) 
 console.log("error" + err.message);
 else 
 return result.rows[0];
 );
 );


app.js:



 var con = require('./db/connect');
 console.log(con());






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 10 at 18:16









Hélio Márcio Filho

19129




19129











  • this not work(((((
    – Daheim
    Nov 10 at 19:19
















  • this not work(((((
    – Daheim
    Nov 10 at 19:19















this not work(((((
– Daheim
Nov 10 at 19:19




this not work(((((
– Daheim
Nov 10 at 19:19

















 

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