nodejs ejs view engine, passing same parameters at once to different routes?

Question

I have 4 different routes in my routes>intro.js file, and want to pass same variable for each routes.

(I am using nodejs express with ejs view engine)

// intro.js file

var something = {
    common: 'common',
    different: {
        test1: 'test1',
        test2: 'test2',
        test3: 'test3',
        test4: 'test4'
    }
}

router.get('/test1', (req, res) => {
    res.render('test1', {common: something.common, different: something.different.test1});
}

router.get('/test2', (req, res) => {
    res.render('test2', {common: something.common, different: something.different.test2});
}

router.get('/test3', (req, res) => {
    res.render('test3', {common: something.common, different: something.different.test3});
}

router.get('/test4', (req, res) => {
    res.render('test4', {common: something.common, different: something.different.test4});
}

It seems that there would be better way to pass common(something.common) variable to each routes(ejs view files), since something.common is being repeated.

Actually, the view file which receives that common variable is a common-used view file. That view file is included into the test1, test2, test3, test4 view file seperately, with using

<% include 'view_file' %>

Is there any way to pass that repeated variable to all routes at once?

Having some difficulties, any advice might really be appreciated.

You have 4 test variables but 3 routes are identical (`/test2`). Is that a typo ? — Evya, Mar 02 '18 at 09:24
@thomann061 I am using express-session, but cannot grasp the idea how to solve the issue with that module. Could you please explain more about that? — jwkoo, Mar 04 '18 at 00:38
I redact my comment about express-session, I misunderstood your problem. — thomann061, Mar 04 '18 at 01:27

score 3 · Accepted Answer · answered Mar 04 '18 at 01:31

I think what you are looking for is app.locals

In express 4, app.locals is treated as a global object.

app.locals = {
  something: {
    common: 'common'
}

From the post below:

These globals are passed as local variables to each view.

More info: How to create global variables accessible in all views using Express / Node.JS?

nodejs ejs view engine, passing same parameters at once to different routes?

1 Answers1