[英]Set session value in callback (Node.js, express.js)
How to set session value in callback? 如何在回调中设置会话值? Why it doesn't work?
为什么不起作用?
app.get('/room/:id', function(req, res) {
var room_id = req.param('id');
room.getRoom(room_id, function(err, result) {
if(result.length) {
req.session.code_room = room_id;
}
});
res.render('room.jade');
});
You probably should move res.render
to the inside of callback function: 您可能应该将
res.render
移到回调函数的内部:
app.get('/room/:id', function(req, res) {
var room_id = req.param('id');
room.getRoom(room_id, function(err, result) {
if(result.length && !err) {
req.session.code_room = room_id;
} else {
//sorry...
req.session.code_room = -1;
}
res.render('room.jade');
});
});
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