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How To Hide Part Of Html Form Depending On User Role

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I am developing a website using Kohana 3.3 and i want to selectively display HTML UI elements depending on the role of the user. e:- If user is an admin then show the 'edit' hyperl

Solution 1:

Ok, so you want to distinguish three different cases

  • visitor
  • admin
  • user

The place to handle this, is your controller. In this you have access to Auth::instance()->get_user().

$user = Auth::instance()->get_user();
if ($user === null) {
    //visitor
} else {
    if ($user->has('roles', ORM::factory('Role', array('name' => 'admin')))) {
        //admin
    } else {
        //user
    }
}

Now that you know how to handle the cases, you somehow need to tell your view. To do that, you can create a new variable in which you load either one of three views - one for each case.

$specificViewName = "";
$user = Auth::instance()->get_user();
if ($user === null) {
    $specificViewName = "visitor";
} else {
    if ($user->has('roles', ORM::factory('Role', array('name' => 'admin')))) {
        $specificViewName = "admin";
    } else {
        $specificViewName = "user";
    }
}
$specificView = View::factory("index/".$specificViewName);

If you are in a Controller_Template, you can now use $this->template->set("specificView", $specificView);.

In this case you'd have a index template like this

<html><!--etc.--><h1>Welcome to my website</h1><!--stuff all sites share like navigation--><?phpprint$specificView; ?><!--more--></html>

And index/visitor

<spanclass="sadtext">Nothing special for you here</span>

index/user

<form>
<button>ask a question!
</form>

index/admin

<ahref="edit">hyperlink</a>

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