Issue
I want to pass some variable from the first middleware to another middleware, and I tried doing this, but there was "req.somevariable is a given as ‘undefined’".
//app.js
..
app.get('/someurl/', middleware1, middleware2)
...
////middleware1
...
some conditions
...
res.somevariable = variable1;
next();
...
////middleware2
...
some conditions
...
variable = req.somevariable;
...
Solution
Attach your variable to the req object, not res.
Instead of
res.somevariable = variable1;
Have:
req.somevariable = variable1;
As others have pointed out, res.locals is the recommended way of passing data through middleware.
Answered By – Amberlamps
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