Throughout the whole front office, the customer can receive notification messages from PrestaShop, to inform about successes or errors for instance. Your theme can also send notifications when certain events occur.
The notification messages are not hard-coded in the template files, but are sent from the controller, so that you have consistency in case you update/change your theme. Thus, this way there is a better chance that all notification messages are already translated into your language!
An array of notification is passed to the templates, containing at least one of these:
In the “Classic” Theme, notifications are implemented as a partial template file:
<aside id="notifications">
{if $notifications.error}
{block name='notifications_error'}
<article class="notification notification-danger" role="alert" data-alert="danger">
<ul>
{foreach $notifications.error as $notif}
<li>{$notif nofilter}</li>
{/foreach}
</ul>
</article>
{/block}
{/if}
{if $notifications.warning}
{block name='notifications_warning'}
<article class="notification notification-warning" role="alert" data-alert="warning">
<ul>
{foreach $notifications.warning as $notif}
<li>{$notif nofilter}</li>
{/foreach}
</ul>
</article>
{/block}
{/if}
{if $notifications.success}
{block name='notifications_success'}
<article class="notification notification-success" role="alert" data-alert="success">
<ul>
{foreach $notifications.success as $notif}
<li>{$notif nofilter}</li>
{/foreach}
</ul>
</article>
{/block}
{/if}
{if $notifications.info}
{block name='notifications_info'}
<article class="notification notification-info" role="alert" data-alert="info">
<ul>
{foreach $notifications.info as $notif}
<li>{$notif nofilter}</li>
{/foreach}
</ul>
</article>
{/block}
{/if}
</aside>
…and are then included in the template file:
{block name='notifications'}
{include file='_partials/notifications.tpl'}
{/block}
Your front controller holds the 4 following variables:
$this->errors$this->success$this->warning$this->infoThey are PHP arrays, and they hold messages as a string.
Here is how you can redirect the customer AND display a message after an action:
$this->success[] = $this->l('Information successfully updated.');
$this->redirectWithNotifications($this->getCurrentURL());