{cannot} · PAD tags

Syntax

{cannot 'ability', $value} ... {/cannot}
{cannot 'ability', $value} ... {else} ... {/cannot}

Parameters

ability: The name of a gate defined with padGate.
values: Optional, any number: what the gate is given after the user, as for {can}.

Description

{cannot} is {can} turned round: the content renders when the gate answers no, and the part after its own {else} - or the @else@ half - when it answers yes. Everything else is the same: the first item is the ability, the others what the gate is given, an enclosing loop's name its current row.

A guest is refused by every gate that does not take NULL for its user, so for a guest {cannot} renders its content for those. An ability nobody defined counts as no - and is an error under the strict check, as with {can}.

Examples

The opposite of can

The content renders when the gate says no - here for the post a guest may not read.

Templateexamples/cannot/1-locked.pad

<ul>
{posts}
  <li>{$title}{cannot 'read-post', $posts} <span class="badge">locked</span>{/cannot}</li>
{/posts}
</ul>

PHPexamples/cannot/1-locked.php

<?php

  $posts = [
    [ 'title' => 'Release notes',  'published' => TRUE,  'author' => 1 ],
    [ 'title' => 'Draft: roadmap', 'published' => FALSE, 'author' => 1 ] ];

?>

Resultopen alone

Release notes
Draft: roadmap locked

With an else

{cannot} owns its {else} too: the part after it renders when the gate says yes.

Templateexamples/cannot/2-else.pad

{set $note = [ 'title' => 'Minutes', 'published' => TRUE, 'author' => 7 ]}
{cannot 'edit-post', $note}
  <p>You cannot change these minutes.</p>
{else}
  <p><a href="#edit">Change the minutes</a></p>
{/cannot}