--- /dev/null
+/**
+ * Implements hook_entity_view_mode_alter().
+ */
+function {{ machine_name }}_entity_view_mode_alter(&$view_mode, $context) {
+ // For nodes, change the view mode when it is teaser.
+ if ($context['entity_type'] == 'node' && $view_mode == 'teaser') {
+ $view_mode = 'my_custom_view_mode';
+ }
+}