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POError when storing variables for use in later functions
 

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  1. POError when storing variables for use in later functions
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    <p>I'm trying to set up user authentication with Firebase and Twitter. The code from <a href="https://stackoverflow.com/a/905324/1683992">this answer</a> works to a point:</p> <pre><code>var url = 'https://molovo-comments.firebaseio.com/'; var myDataRef = new Firebase(url); var dataStore = (function(){ var user = null; var auth = new FirebaseSimpleLogin(myDataRef, function(error, data) { if (error) { // an error occurred while attempting login console.log(error); } else if (user) { // user authenticated with Firebase user = data; console.log('User ID: ' + user.id + ', Provider: ' + user.provider); } else { // user is logged out } }); return { getAuth : function() { if (auth) return auth; // else show some error that it isn't loaded yet; }, getUser : function() { if (user) return user; // else show some error that it isn't loaded yet; } }; })(); </code></pre> <p>I can access the auth variable using <code>dataStore.getAuth()</code> and user.id is logged to the console. Calling <code>dataStore.getAuth().login('twitter')</code> also works, and I'm redirected to the twitter login page.</p> <p>But if I try to return the user id externally using <code>dataStore.getUser().id</code> I get a <code>cannot read property 'id' of undefined</code> error.</p> <p>I think I'm probably just returning <code>user</code> in the wrong way, so if anyone could shed any light on the issue I'd very much appreciate it.</p> <p><strong>UPDATE:</strong> Thanks to the answers from @BenjaminWarren and @SpinyNorman I've updated the code to use the correct variables as below:</p> <pre><code>var dataStore = (function(){ var userObj = null; var auth = new FirebaseSimpleLogin(myDataRef, function(error, user) { if (error) { // an error occurred while attempting login console.log(error); } else if (user) { // user authenticated with Firebase userObj = user; console.log('User ID: ' + userObj.id + ', Provider: ' + userObj.provider); } else { // user is logged out } }); return { getUser : function() { if (userObj) return userObj; // else show some error that it isn't loaded yet; }, getAuth : function() { if (auth) return auth; // else show some error that it isn't loaded yet; } } })(); jQuery(document).ready(function($) { console.log(dataStore.getUser().id); }); </code></pre> <p>Console output looks like this:</p> <pre><code>Uncaught TypeError: Cannot read property 'id' of undefined main.js:37 User ID: 222936694, Provider: twitter main.js:14 </code></pre> <p>So <code>dataStore.getUser().id</code> is being logged before the auth object has been returned, and therefore is undefined. I've tried different setTimout values etc on the getUser() return but it's alsways returned before the <code>auth</code></p> <p>Cheers,</p> <p>James</p>
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    1. USJames Dinsdale
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    1. COLooks ok to me, what's returned if you log: `dataStore.getUser()` ? an object? if so, does it have an `id` property?
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      1. USbenhowdle89
    2. COdataStore.getUser() just logs as undefined
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      1. USJames Dinsdale
    3. CO......Dinsdale?
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      1. POError when storing variables for use in later functions
      1. USSpiny Norman
 

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