Extract Materialize Dropdown controller

assets/controllers/materialize/dropdown_controller.js

@@ -0,0 +1,16 @@
+import { Controller } from '@hotwired/stimulus';
+import M from '@materializecss/materialize';
+
+export default class extends Controller {
+  connect() {
+    this.instance = M.Dropdown.init(this.element, {
+      hover: false,
+      coverTrigger: false,
+      constrainWidth: false,
+    });
+  }
+
+  disconnect() {
+    this.instance.destroy();
+  }
+}