How to call wordpress is_logged_in function from JavaScript

Question

I want to call this function in JavaScript:

http://codex.wordpress.org/Function_Reference/is_user_logged_in

But the examples are only with PHP. When that JavaScript function is called I want to check if the user is logged and send a message / redirect if not.

Is there a way to do this?

Mithun Sreedharan · Accepted Answer · 2013-06-24 09:27:41Z

5

Add this in your functions.php

function check_login() {
    $return['loggedin'] = false;  
    if ( is_user_logged_in() ) {
        $return['loggedin'] = true;    
    }
    echo json_encode($return);
    die();
}
add_action('wp_ajax_check_login', 'check_login');
add_action('wp_ajax_nopriv_check_login', 'check_login');

Add this to your custom JS code

$.ajax({
    url : YOUR_AJAX_URL, // "/wp-admin/admin-ajax.php"
    type : "GET",
    dataType : "json",
    cache : false,
    data : {
        action : 'check_login'
    },
    success : function (json) {
        if (json.loggedin) {
            alert("Loggedin");
        }
    }
});

edited Jun 24, 2013 at 9:27

answered Jun 24, 2013 at 9:22

Mithun Sreedharan

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Comments

Manoj Yadav · Accepted Answer · 2013-06-23 20:23:35Z

4

You can wrap javascript code in between php code like below

<script>
$('#checkLogin').click(function() {
    <?php if (!is_user_logged_in()): ?>
    alert('Please login to access this page');
    location = 'http://www.example.com';
    <?php else: ?>
    alert('You are logged in');
    <?php endif; ?>
});
</script>

edited Jun 23, 2013 at 20:23

answered Jun 23, 2013 at 20:08

Manoj Yadav

6,6121 gold badge25 silver badges21 bronze badges

5 Comments

user2469440 Over a year ago

but this only happens if I click on a div

Joe Over a year ago

@user2469440 - what do you mean? You could just do <script> var loggedIn = <?php echo is_user_logged_in(); ?>; </script> then use it later: if(loggedIn){ /* do stuff * / } else { /* redirect */}.

user2469440 Over a year ago

Maybe im doing it wrong this what I was thinking: I have a div that onclicked will update mysql table, so I have already stored if there is a user or not BUT when I click on that div I still want to do the mysql update. So I though I had to call a javascript function that would do the mysql update.

Manoj Yadav Over a year ago

Code updated, you can also use @Joe method, which can be used at multiple place.

user2469440 Over a year ago

I've been searching and I guess I really need to use ajax. Since I want to update the page without having to reload :| I guess im learning something new today

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