Creating a expressjs middleware that accepts parameters

Question

I am trying to create a middleware that can accept parameters. How can this be done?

example

app.get(\'/hasToBeAdmin\', HasRole(\'Admin\'), function(         


        

Answer 1

I use this solution. I recieve a jwt token in body req, and get role information from there

//roleMiddleware.js

const checkRole = role => {
    
    return (req, res, next) => {
        if (req.role == role) {
            console.log(`${role} role granted`)
            next()
        } else {
            res.status(401).send({ result: 'error', message: `No ${role} permission granted` })
        }
    }
}

module.exports = { checkRole }

So first I use auth middleware to know if is a valid user, and then the role middleware to know if user have access to the api route

// router.js

router.post('/v1/something-protected', requireAuth, checkRole('commercial'), (req, res) => {
    // do what you want...
})

I hope to be useful