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Add custom workflow action

Built-in workflow actions enable you to automatically publish a Content item or to send a notification to reviewers.

You can also create custom actions that are called when content reaches a specific stage or goes through a transition in a workflow.

The following example shows how to configure two custom actions that send customized notifications.

Configure custom action

Configure the first custom action in the following way:

ezplatform:
    system:
        default:
            workflows:
                custom_workflow:
                    transitions:
                        to_legal:
                            from: [draft]
                            to: [legal]
                            label: To legal
                            color: '#8888ba'
                            icon: '/bundles/ibexaplatformicons/img/all-icons.svg#notice'
                            reviewers:
                                required: true
                                user_group: 13
                            actions:
                                legal_transition_action:
                                    data:
                                        message: "Sent to the legal department"

The configuration indicates the name of the custom action (legal_transition_action). data contains additional data that is passed to the action. In this case, it is a message to display.

Create event listener

To define what the action does, create an event listener src/EventListener/LegalTransitionListener.php:

<?php

declare(strict_types=1);

namespace App\EventListener;

use EzSystems\EzPlatformAdminUi\Notification\TranslatableNotificationHandlerInterface as NotificationInterface;
use EzSystems\EzPlatformWorkflow\Event\Action\AbstractTransitionWorkflowActionListener;
use Symfony\Component\Workflow\Event\TransitionEvent;

class LegalTransitionListener extends AbstractTransitionWorkflowActionListener
{
    private $notificationHandler;

    public function __construct(NotificationInterface $notificationHandler)
    {
        $this->notificationHandler = $notificationHandler;
    }

    public function getIdentifier(): string
    {
        return 'legal_transition_action';
    }

    public function onWorkflowEvent(TransitionEvent $event): void
    {
        $metadata = $this->getActionMetadata($event->getWorkflow(), $event->getTransition());
        $message = $metadata['data']['message'];

        $this->notificationHandler->info(
            $message,
            [],
            'domain'
        );

        $this->setResult($event, true);
    }
}

This listener displays a notification bar at the bottom of the page when a Content item goes through the to_legal transition.

The content of the notification is the message configured in actions.legal_transition_action.data. To get it, access the metadata for this transition through getActionMetadata() (line 27).

Register the listener as a service (in config/services.yaml):

services:
    App\EventListener\LegalTransitionListener:
        tags:
            - { name: ezplatform.workflow.action_listener }

Use custom transition value

Line 36 in the listener above sets a custom result value for the transition. You can use this value in other stages and transitions for this Content item, for example:

                        approved_by_legal:
                            from: [legal]
                            to: [done]
                            label: Approved by legal
                            color: '#88ad88'
                            icon: '/bundles/ibexaplatformicons/img/all-icons.svg#checkbox'
                            actions:
                                publish: ~
                                approved_transition_action:
                                    condition:
                                        - result.legal_transition_action == true

The action indicated here is performed only if the result from the legal_transition_action is set to true. Then, the following src/EventListener/ApprovedTransitionListener is called:

<?php

declare(strict_types=1);

namespace App\EventListener;

use EzSystems\EzPlatformAdminUi\Notification\TranslatableNotificationHandlerInterface as NotificationInterface;
use EzSystems\EzPlatformWorkflow\Event\Action\AbstractTransitionWorkflowActionListener;
use Symfony\Component\Workflow\Event\TransitionEvent;

class ApprovedTransitionListener extends AbstractTransitionWorkflowActionListener
{
    private $notificationHandler;

    public function __construct(NotificationInterface $notificationHandler)
    {
        $this->notificationHandler = $notificationHandler;
    }

    public function getIdentifier(): string
    {
        return 'approved_transition_action';
    }

    public function onWorkflowEvent(TransitionEvent $event): void
    {
        $context = $event->getContext();
        $message = $context['message'];

        $this->notificationHandler->info(
            $message,
            [],
            'domain'
        );
    }
}

Register this listener as a service:

services:
    App\EventListener\ApprovedTransitionListener:
        tags:
            - { name: ezplatform.workflow.action_listener }

This listener also displays a notification, but in this case its content is taken from the message that the user types when choosing the Done transition.

The message is contained in the context of the action.

$event->getContext() (line 27) gives you access to the context. The context contains:

• $workflowId - the ID of the current workflow
• $message - content of the user's message when sending the Content item through the transitions
• $reviewerId - ID of the user who was selected as a reviewer
• $result - an array of transition actions performed so far

You can also modify the context using the setContext() method. For example, you can override the message typed by the user:

$new_context = $context;
$new_context['message'] = "This article went through proofreading";
$event->setContext($new_context);