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Added missing events description #7528

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6891c1d
Added missing events description
Guite Feb 24, 2017
89f30cd
Proposed some rewords
javiereguiluz Feb 27, 2017
96bad83
added commented aspects
Guite Mar 6, 2017
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31 changes: 31 additions & 0 deletions workflow/usage.rst
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Expand Up @@ -222,6 +222,37 @@ could easily enable logging::
$subscriber = new AuditTrailListener($logger);
$dispatcher->addSubscriber($subscriber);

Available events
----------------

1. General events

The following events are dispatched for all workflows:

* ``workflow.guard``: occurs just before a transition is started and when testing which transitions are available. It allows you to define that the transition is not allowed by calling ``$event->setBlocked(true);`` as shown above.
* ``workflow.leave``: carries the marking with the initial places, occurs just after an object has left it's current state.
* ``workflow.transition``: carries the marking with the current places, occurs just before starting to transition to the new state.
* ``workflow.enter``: carries the marking with the new places, occurs just after the object has entered into the new state.

2. Workflow-specific events

All the previous events are also triggered for each workflow individually, so
you can react only to the events of a specific workflow:

* ``workflow.<workflow_name>.guard``
* ``workflow.<workflow_name>.leave``
* ``workflow.<workflow_name>.transition``
* ``workflow.<workflow_name>.enter``

3. Transition or state-specific events

You can even listen to some specific transitions or states for a specific workflow:

* ``workflow.<workflow_name>.guard.<transition_name>``
* ``workflow.<workflow_name>.leave.<state_name>``
* ``workflow.<workflow_name>.transition.<transition_name>``
* ``workflow.<workflow_name>.enter.<state_name>``

Usage in Twig
-------------

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