$container->loadFromExtension('framework', [

// ...

'workflows' => [

'blog_publishing' => [

'metadata' => [

'title' => 'Blog Publishing Workflow',

],

'places' => [

'draft' => [

'max_num_of_words' =>500,

],

// ...

],

'transitions' => [

'to_review' => [

'from' => 'draft',

'to' => 'review',

'metadata' => [

'priority' => 0.5,

],

],

]);

Then you can access this metadata in your controller as follows::

Using transition blockers you can

return a user-friendly error message when you stop a transition from happening. In the example we

get this message from the:class:`Symfony\\Component\\Workflow\\Event\\Event`'s metadata, giving

youan easy place to manage the text.

youa central place to manage the text.

..tip::

This is a simple example; in production you may prefer to use the:doc:`Translation</components/translation>`

component to manage messages in one place::

This is a simple example; in production you may prefer to use the:doc:`Translation</components/translation>`

component to manage messages in one place::

namespace App\Listener\Workflow\Task;

..versionadded::4.1

The transition blockers wereadded in version 4.1.

The transition blockers wereintroduced in version 4.1.

In Twig templates, metadata is available via the ``workflow_metadata()`` function: