Workflow's CHANGELOG: Use PHP examples

alexislefebvre · alexislefebvre · commit 4d313e5d18d3 · 2019-03-17T23:57:37.000+01:00
diff --git a/src/Symfony/Component/Workflow/CHANGELOG.md b/src/Symfony/Component/Workflow/CHANGELOG.md
@@ -6,11 +6,26 @@ CHANGELOG
 
  * Trigger `entered` event for subject entering in the Workflow for the first time
  * Added a context to `Workflow::apply()`. The `MethodMarkingStore` could be used to leverage this feature.
- * Added dump styling of states and transitions through `metadata`,
-   configuration of places is:
-   `label` and `description` (only for PUML) (text), `bg_color` (`#RRGGBB` or CSS color name)
-   and configuration of transitions is:
-   `label` (text), `color` and `arrow_color` (`#RRGGBB` or CSS color name)
+ * Add style to transitions by declaring metadata:
+   1. Create places: `$places = range('a', 'b');`
+   2. Create a transition: `$transition = new Transition('t1', 'a', 'b');`
+   3. Attach this transition to the transitions: `$transitions[] = $transition;`
+   4. Declare style for this transition:
+
+        ```        
+        $transitionsMetadata = new \SplObjectStorage();
+        $transitionsMetadata[$transition] = [
+            'color' => 'Red',
+            'arrow_color' => '#00ff00',
+        ];
+        $inMemoryMetadataStore = new InMemoryMetadataStore([], [], $transitionsMetadata);
+        ```
+
+   5. Pass metadata store as the fourth argument of `Definition`:
+
+        ```
+        return new Definition($places, $transitions, null, $inMemoryMetadataStore);
+        ```
 
 4.1.0
 -----
