Question

How can I find out if a user is logged in CakePHP thru the Auth component using jQuery. If a user is logged in allow the action to execute if not display an alert asking the user to log in.

<script>
   $(document).ready(function(){
       $(".voteup").click(function() {
            // var isLoggedIn = ... code needed
            if(isLoggedIn){
                var Id = $(this).children("p").text();
                $(this).children("#article_thumbsUp").load("/comments/voteup/"+Id);
            }else{
                alert('You must be logged in to vote on a comment');
            }
      });
  });
</script>

Answer 1

Assuming you have a CommentsController with an action check_login()

public function check_login() {

    // $this->Auth->user() returns NULL or User info for logged in user
    if ($this->Auth->user()) {

        // your user is logged in echo success
        ...

    } else {

        // you user is NOT logged in echo failure
        ...

    }

}