Issue #3106332 by dmitry.korhov: Undefined index: exposed_form_options

src/Plugin/views/exposed_form/BetterExposedFilters.php

@@ -188,7 +188,7 @@ class BetterExposedFilters extends InputRequired {
 
     // User raw user input for AJAX callbacks.
     $user_input = $form_state->getUserInput();
-    $bef_input = $user_input['exposed_form_options']['bef'];
+    $bef_input = $user_input['exposed_form_options']['bef'] ?? NULL;
 
     /*
      * General BEF settings
@@ -559,7 +559,7 @@ class BetterExposedFilters extends InputRequired {
       // Validate exposed filter configuration.
       if ($type === 'filter') {
         foreach ($config as $filter_id => $filter_options) {
-          $plugin_id = $filter_options['configuration']['plugin_id'];
+          $plugin_id = $filter_options['configuration']['plugin_id'] ?? NULL;
           if (!$plugin_id) {
             continue;
           }
@@ -574,7 +574,7 @@ class BetterExposedFilters extends InputRequired {
       }
       // Validate exposed pager/sort configuration.
       elseif (in_array($type, ['pager', 'sort'])) {
-        $plugin_id = $config['configuration']['plugin_id'];
+        $plugin_id = $config['configuration']['plugin_id'] ?? NULL;
         if (!$plugin_id) {
           continue;
         }
@@ -625,7 +625,7 @@ class BetterExposedFilters extends InputRequired {
       // Save exposed filter configuration.
       if ($type === 'filter') {
         foreach ($config as $filter_id => $filter_options) {
-          $plugin_id = $filter_options['configuration']['plugin_id'];
+          $plugin_id = $filter_options['configuration']['plugin_id'] ?? NULL;
           /** @var \Drupal\better_exposed_filters\Plugin\BetterExposedFiltersWidgetInterface $plugin */
           if (!$plugin_id) {
             unset($bef_options['filter'][$filter_id]);
@@ -645,7 +645,7 @@ class BetterExposedFilters extends InputRequired {
       }
       // Save exposed pager/sort configuration.
       elseif (in_array($type, ['pager', 'sort'])) {
-        $plugin_id = $config['configuration']['plugin_id'];
+        $plugin_id = $config['configuration']['plugin_id'] ?? NULL;
         if (!$plugin_id) {
           unset($bef_options[$type]);
           continue;