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JavaScript Facebook Authentication

glenn romaniuk
glenn romaniuk
32,520 Points
Posted by glenn romaniuk
glenn romaniuk
32,520 Points

node.js passport oauth error "Cannot read property '0' of undefined"

Downloaded the sourcecode for the github authentication. When run i recieve the "Cannot read property '0' of undefined" error. Any ideas?

3 Answers

Lilly Piri
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Lilly Piri
Full Stack JavaScript Techdegree Graduate 19,468 Points
Lilly Piri
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Lilly Piri
Full Stack JavaScript Techdegree Graduate 19,468 Points

I had to add scope and it fixed this error.

passport.use(
  new GitHubStrategy(
    {
      clientID: process.env.GITHUB_CLIENT_ID,
      clientSecret: process.env.GITHUB_CLIENT_SECRET,
      callbackURL: 'http://localhost:3000/auth/github/return',
      scope: 'user:email'
    }, generateOrFindUser
  )
);
Valeshan Naidoo
Valeshan Naidoo
27,008 Points
Valeshan Naidoo
Valeshan Naidoo
27,008 Points

That fixed it for me, other issues I had was the saveUninitialized spelling, and users instead of user for user._id. Long coding sessions like these always leave me rife with silly errors.

Khanh Tran
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Khanh Tran
Full Stack JavaScript Techdegree Student 944 Points
Khanh Tran
.a{fill-rule:evenodd;}techdegree
Khanh Tran
Full Stack JavaScript Techdegree Student 944 Points

Hi,

To solve the problem, go to your GitHub settings page > Profile. And change your "Public email" field from "Don't show my email address" to your email. Save it! That's all :D

Michael Liendo
Michael Liendo
15,326 Points
Michael Liendo
Michael Liendo
15,326 Points

Hard to tell without looking at your code. I didn't have any trouble when I cloned the repo. Just getting the basics out of the way: You ran npm install?

Where are you getting the error?