Show volt links based on role

Question

Show volt links based on role

Frederik10k Jan '15

Created Jan '15	Last Reply Jan '15	Replies 2	Views 1337	Votes 0

Frederik10k 8.4k

Jan '15

Hei.

I am using a Vokuro instance to play around with Phalcon. Vokuro delivers 3 roles (Admin, User and Guest).

I would like to display links within my volt-template based upon those roles. (f.ex. show links to administration only to users with the administrator role)

So in Acl.php I included:


//check if user is admin, return true/false
public function isAdmin(){
    return ( $this->auth->getIdentity()['profile'] == 'Administrators' ? true : false );
}

I added a new volt function to services.php


/**
 * Setting up the view component
 */
$di->set('view', function () use ($config) {

    $view = new View();

    $view->setViewsDir($config->application->viewsDir);

    $view->registerEngines(array(
        '.volt' => function ($view, $di) use ($config) {

            $volt = new VoltEngine($view, $di);

            $volt->setOptions(array(
                'compiledPath' => $config->application->cacheDir . 'volt/',
                'compiledSeparator' => '_'
            ));

            $compiler = $volt->getCompiler();

            $compiler->addFunction('isAdmin', function() {
                $acl = new Acl();
                return $acl->isAdmin();
            });

            return $volt;
        }
    ));

    return $view;
}, true);

Finally I changed my menu in the volt template to this:


{% if isAdmin() %}
    {% set menus = [
        'Profile': 'users/changePassword',
        'Administration': 'administration',
        'Logout': 'session/logout'
    ] %}
{% else %}
    {% set menus = [
        'Profile': 'users/changePassword',
        'Logout': 'session/logout'
    ] %}
{% endif %}

So far so good. But now I encounter this behavior: I use Chrome and Firefox side by side with 2 users. Chrome with my administrator account, FF with a user account. When I log into the user-account with FF, the user sees his own menu without the admin-link. When I log into the admin account afterwards with Chrome, I see the usermenu aswell!? Now, when I log off all accounts, login into the admin-account first, and into the user-account afterwards, the user sees the administration-menu.

Do you have an idea what is happening and/or a more nice solution to devide admin-views from user-views?

thanks in advance, greetings

//edit: I have to delete the metaData in order to "reset" the view before I can login with the other account to make the opposite view available.

skollro
6.6k

Accepted
answer

Jan '15

You have to use additional volt compiler functions as the example from the documentation shows:

<?php

$compiler->addFunction('widget', function($resolvedArgs, $exprArgs) {
    return 'MyLibrary\Widgets::get(' . $resolvedArgs . ')';
});

This means that volt compiler parses your template and simply performs textual replacements with plain PHP code. So maybe its a good idea to create a static function inside Acl class public static function isAdmin(). Then you can do the following:

<?php

$compiler->addFunction('isAdmin', function() {
    return 'ACLNamespace\Acl::isAdmin()';
});

I hope this helps! :)

Frederik10k · Answer 1 · 2015-01-06T04:01:12-07:00

Using PHP inside the volt-template works flawless.

<?php if( $this->auth->getIdentity()['profile'] == 'Administrators' ) { ?>
    {% set menus = [
        'Profile': 'users/changePassword',
        'Administration': 'administration',
        'Logout': 'session/logout'
    ] %}
<?php } else { ?>
    {% set menus = [
        'Profile': 'users/changePassword',
        'Logout': 'session/logout'
    ] %}
<?php } ?>

But I want to try to keep my templates without PHP as far as possible. :/

Frederik10k · Answer 2 · 2015-01-06T05:55:06-07:00

Then I have to make the session within the static function static aswell, right?

Fatal error: Using $this when not in object context in ...

skollro · Answer 3 · 2015-01-06T06:08:20-07:00

skollro
6.6k

Jan '15

You can access the current di in a static way: \Phalcon\DI::getDefault()->get(...);

Frederik10k · Answer 4 · 2015-01-06T06:48:32-07:00

Thank you for the hints! :)

But I think I'll try another approach aswell, as I will fetch the links from the DB soon. Then I can apply the roles at this stage already. :)