be able to enable workflow support explicitly

Author: xabbuh

DependencyInjection/Configuration.php

@@ -530,13 +530,13 @@ private function registerProfilerConfiguration(array $config, ContainerBuilder $
     /**
      * Loads the workflow configuration.
      *
-     * @param array            $workflows A workflow configuration array
+     * @param array            $config    A workflow configuration array
      * @param ContainerBuilder $container A ContainerBuilder instance
      * @param XmlFileLoader    $loader    An XmlFileLoader instance
      */
-    private function registerWorkflowConfiguration(array $workflows, ContainerBuilder $container, XmlFileLoader $loader)
+    private function registerWorkflowConfiguration(array $config, ContainerBuilder $container, XmlFileLoader $loader)
     {
-        if (!$workflows) {
+        if (!$config['enabled']) {
             if (!class_exists(Workflow\Workflow::class)) {
                 $container->removeDefinition(WorkflowDumpCommand::class);
             }
@@ -552,7 +552,7 @@ private function registerWorkflowConfiguration(array $workflows, ContainerBuilde
 
         $registryDefinition = $container->getDefinition('workflow.registry');
 
-        foreach ($workflows as $name => $workflow) {
+        foreach ($config['workflows'] as $name => $workflow) {
             if (!array_key_exists('type', $workflow)) {
                 $workflow['type'] = 'workflow';
                 @trigger_error(sprintf('The "type" option of the "framework.workflows.%s" configuration entry must be defined since Symfony 3.3. The default value will be "state_machine" in Symfony 4.0.', $name), E_USER_DEPRECATED);

DependencyInjection/FrameworkExtension.php

@@ -254,15 +254,16 @@
 
     <xsd:complexType name="workflow">
         <xsd:sequence>
-            <xsd:element name="marking-store" type="marking_store" />
+            <xsd:element name="marking-store" type="marking_store" minOccurs="0" maxOccurs="1" />
             <xsd:element name="support" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
-            <xsd:element name="place" type="xsd:string" minOccurs="1" maxOccurs="unbounded" />
-            <xsd:element name="transition" type="transition" minOccurs="1" maxOccurs="unbounded" />
+            <xsd:element name="place" type="xsd:string" minOccurs="0" maxOccurs="unbounded" />
+            <xsd:element name="transition" type="transition" minOccurs="0" maxOccurs="unbounded" />
         </xsd:sequence>
-        <xsd:attribute name="name" type="xsd:string" use="required" />
+        <xsd:attribute name="name" type="xsd:string" />
         <xsd:attribute name="type" type="workflow_type" />
         <xsd:attribute name="initial-place" type="xsd:string" />
         <xsd:attribute name="support-strategy" type="xsd:string" />
+        <xsd:attribute name="enabled" type="xsd:boolean" />
     </xsd:complexType>
 
     <xsd:complexType name="marking_store">

Resources/config/schema/symfony-1.0.xsd

@@ -331,7 +331,10 @@ protected static function getBundleDefaultConfig()
                 'default_redis_provider' => 'redis://localhost',
                 'default_memcached_provider' => 'memcached://localhost',
             ),
-            'workflows' => array(),
+            'workflows' => array(
+                'enabled' => false,
+                'workflows' => array(),
+            ),
             'php_errors' => array(
                 'log' => true,
                 'throw' => true,

Tests/DependencyInjection/ConfigurationTest.php

@@ -0,0 +1,5 @@
+<?php
+
+$container->loadFromExtension('framework', array(
+    'workflows' => null,
+));

Tests/DependencyInjection/Fixtures/php/workflows_enabled.php

@@ -0,0 +1,11 @@
+<?xml version="1.0" ?>
+<container xmlns="http://symfony.com/schema/dic/services"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns:framework="http://symfony.com/schema/dic/symfony"
+    xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd
+        http://symfony.com/schema/dic/symfony http://symfony.com/schema/dic/symfony/symfony-1.0.xsd">
+
+    <framework:config>
+        <framework:workflow enabled="true" />
+    </framework:config>
+</container>

Tests/DependencyInjection/Fixtures/xml/workflows_enabled.xml

@@ -0,0 +1,2 @@
+framework:
+    workflows: ~

Tests/DependencyInjection/Fixtures/yml/workflows_enabled.yml

@@ -12,6 +12,7 @@
 namespace Symfony\Bundle\FrameworkBundle\Tests\DependencyInjection;
 
 use Doctrine\Common\Annotations\Annotation;
+use Symfony\Bundle\FrameworkBundle\Command\WorkflowDumpCommand;
 use Symfony\Bundle\FullStack;
 use Symfony\Bundle\FrameworkBundle\Tests\TestCase;
 use Symfony\Bundle\FrameworkBundle\DependencyInjection\Compiler\AddAnnotationsCachedReaderPass;
@@ -42,6 +43,7 @@
 use Symfony\Component\Serializer\Normalizer\JsonSerializableNormalizer;
 use Symfony\Component\Translation\DependencyInjection\TranslatorPass;
 use Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass;
+use Symfony\Component\Workflow\Registry;
 
 abstract class FrameworkExtensionTest extends TestCase
 {
@@ -307,6 +309,14 @@ public function testWorkflowMultipleTransitionsWithSameName()
         $this->assertSame(array('draft'), $transitions[4]->getArgument(1));
     }
 
+    public function testWorkflowServicesCanBeEnabled()
+    {
+        $container = $this->createContainerFromFile('workflows_enabled');
+
+        $this->assertTrue($container->has(Registry::class));
+        $this->assertTrue($container->hasDefinition(WorkflowDumpCommand::class));
+    }
+
     public function testRouter()
     {
         $container = $this->createContainerFromFile('full');