✨ Add support for block anchor (#346)

Author: Log1x

src/Block.php

@@ -501,6 +501,18 @@ public function getClasses(): string
         );
     }
 
+    /**
+     * Retrieve the component attribute bag.
+     */
+    protected function getComponentAttributeBag(): ComponentAttributeBag
+    {
+        return (new ComponentAttributeBag)
+            ->class($this->getClasses())
+            ->style($this->getInlineStyle())
+            ->merge(['id' => $this->block->anchor ?? null])
+            ->filter(fn ($value) => filled($value) && $value !== ';');
+    }
+
     /**
      * Retrieve the block API version.
      */
@@ -778,11 +790,6 @@ public function render($block, $content = '', $preview = false, $post_id = 0, $w
         $this->style = $this->getStyle();
         $this->inlineStyle = $this->getInlineStyle();
 
-        $attributes = (new ComponentAttributeBag)
-            ->class($this->classes)
-            ->style($this->inlineStyle)
-            ->filter(fn ($value) => filled($value) && $value !== ';');
-
         if (! is_admin() && method_exists($this, 'assets')) {
             $instance = (array) ($this->block ?? []);
 
@@ -793,7 +800,7 @@ public function render($block, $content = '', $preview = false, $post_id = 0, $w
 
         return $this->view($this->view, [
             'block' => $this,
-            'attributes' => $attributes,
+            'attributes' => $this->getComponentAttributeBag(),
         ]);
     }