Issue #3471993 - Add help

Related to #3471993

fapi_validation.module

@@ -5,6 +5,22 @@
  * Form API validation module.
  */
 
+use Drupal\Core\Routing\RouteMatchInterface;
+
+/**
+ * Implements hook_help().
+ *
+ * Provides additional information about the module.
+ */
+function fapi_validation_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    case 'help.page.fapi_validation':
+      $output = '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('Extends the form API to include convenient access to common for submission filters and validation checks.') . '</p>';
+      return $output;
+  }
+}
+
 /**
  * Implements hook_element_info_alter().
  *