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
asked Nov 10 at 17:58
Daheim
63
add a comment |
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
asked Nov 10 at 17:58
Daheim
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
add a comment |
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
asked Nov 10 at 17:58
Daheim
63
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
asked Nov 10 at 17:58
Daheim
63
asked Nov 10 at 17:58
Daheim
63
asked Nov 10 at 17:58
Daheim
63
asked Nov 10 at 17:58
Daheim
63
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
add a comment |
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
add a comment |
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());
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
this not work(((((
– Daheim
Nov 10 at 19:19
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
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());
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
this not work(((((
– Daheim
Nov 10 at 19:19
add a comment |
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());
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
this not work(((((
– Daheim
Nov 10 at 19:19
add a comment |
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());
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
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());
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
answered Nov 10 at 18:16
Hélio Márcio Filho
19129
19129
this not work(((((
– Daheim
Nov 10 at 19:19
add a comment |
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
add a comment |
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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