Issue #2239065 by tim.plunkett | webchick: Overridden config bleeding through...

Issue #2239065 by tim.plunkett | webchick: Overridden config bleeding through to configuration forms.

core/lib/Drupal/Core/Form/ConfigFormBase.php

@@ -16,13 +16,6 @@
  */
 abstract class ConfigFormBase extends FormBase {
 
-  /**
-   * Stores the configuration factory.
-   *
-   * @var \Drupal\Core\Config\ConfigFactoryInterface
-   */
-  protected $configFactory;
-
   /**
    * Constructs a \Drupal\system\ConfigFormBase object.
    *
@@ -30,7 +23,7 @@ abstract class ConfigFormBase extends FormBase {
    *   The factory for configuration objects.
    */
   public function __construct(ConfigFactoryInterface $config_factory) {
-    $this->configFactory = $config_factory;
+    $this->setConfigFactory($config_factory);
   }
 
   /**
@@ -74,10 +67,12 @@ public function submitForm(array &$form, array &$form_state) {
    * configuration.
    */
   protected function config($name) {
-    $old_state = $this->configFactory->getOverrideState();
-    $this->configFactory->setOverrideState(FALSE);
-    $config = $this->configFactory->get($name);
-    $this->configFactory->setOverrideState($old_state);
+    $config_factory = $this->configFactory();
+    $old_state = $config_factory->getOverrideState();
+    $config_factory->setOverrideState(FALSE);
+    $config = $config_factory->get($name);
+    $config_factory->setOverrideState($old_state);
     return $config;
   }
+
 }

core/lib/Drupal/Core/Form/FormBase.php

@@ -44,9 +44,14 @@ abstract class FormBase extends DependencySerialization implements FormInterface
   /**
    * The config factory.
    *
+   * This is marked private in order to force subclasses to use the
+   * self::config() method, which may be overridden to address specific needs
+   * when loading config. See \Drupal\Core\Form\ConfigFormBase::config() for an
+   * example of this.
+   *
    * @var \Drupal\Core\Config\ConfigFactoryInterface
    */
-  protected $configFactory;
+  private $configFactory;
 
   /**
    * The form error handler.
@@ -121,10 +126,22 @@ protected function translationManager() {
    *   A configuration object.
    */
   protected function config($name) {
+    return $this->configFactory()->get($name);
+  }
+
+  /**
+   * Gets the config factory for this form.
+   *
+   * When accessing configuration values, use $this->config(). Only use this
+   * when the config factory needs to be manipulated directly.
+   *
+   * @return \Drupal\Core\Config\ConfigFactoryInterface
+   */
+  protected function configFactory() {
     if (!$this->configFactory) {
       $this->configFactory = $this->container()->get('config.factory');
     }
-    return $this->configFactory->get($name);
+    return $this->configFactory;
   }
 
   /**

core/modules/aggregator/lib/Drupal/aggregator/Form/SettingsForm.php

@@ -99,7 +99,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('aggregator.settings');
+    $config = $this->config('aggregator.settings');
 
     // Global aggregator settings.
     $form['aggregator_allowed_html_tags'] = array(
@@ -200,7 +200,7 @@ public function validateForm(array &$form, array &$form_state) {
    */
   public function submitForm(array &$form, array &$form_state) {
     parent::submitForm($form, $form_state);
-    $config = $this->configFactory->get('aggregator.settings');
+    $config = $this->config('aggregator.settings');
     // Let active plugins save their settings.
     foreach ($this->configurableInstances as $instance) {
       $instance->submitConfigurationForm($form, $form_state);

core/modules/block/lib/Drupal/block/BlockForm.php

@@ -8,7 +8,6 @@
 namespace Drupal\block;
 
 use Drupal\Core\Cache\Cache;
-use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Entity\EntityForm;
 use Drupal\Core\Entity\EntityManagerInterface;
 use Drupal\Core\Language\Language;
@@ -42,13 +41,6 @@ class BlockForm extends EntityForm {
    */
   protected $languageManager;
 
-  /**
-   * The config factory.
-   *
-   * @var \Drupal\Core\Config\ConfigFactoryInterface
-   */
-  protected $configFactory;
-
   /**
    * Constructs a BlockForm object.
    *
@@ -56,13 +48,10 @@ class BlockForm extends EntityForm {
    *   The entity manager.
    * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
    *   The language manager.
-   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
-   *   The config factory.
    */
-  public function __construct(EntityManagerInterface $entity_manager, LanguageManagerInterface $language_manager, ConfigFactoryInterface $config_factory) {
+  public function __construct(EntityManagerInterface $entity_manager, LanguageManagerInterface $language_manager) {
     $this->storage = $entity_manager->getStorage('block');
     $this->languageManager = $language_manager;
-    $this->configFactory = $config_factory;
   }
 
   /**
@@ -71,8 +60,7 @@ public function __construct(EntityManagerInterface $entity_manager, LanguageMana
   public static function create(ContainerInterface $container) {
     return new static(
       $container->get('entity.manager'),
-      $container->get('language_manager'),
-      $container->get('config.factory')
+      $container->get('language_manager')
     );
   }
 
@@ -84,7 +72,7 @@ public function form(array $form, array &$form_state) {
 
     // Store theme settings in $form_state for use below.
     if (!$theme = $entity->get('theme')) {
-      $theme = $this->configFactory->get('system.theme')->get('default');
+      $theme = $this->config('system.theme')->get('default');
     }
     $form_state['block_theme'] = $theme;
 

core/modules/book/lib/Drupal/book/Form/BookSettingsForm.php

@@ -26,7 +26,7 @@ public function getFormId() {
    */
   public function buildForm(array $form, array &$form_state) {
     $types = node_type_get_names();
-    $config = $this->configFactory->get('book.settings');
+    $config = $this->config('book.settings');
     $form['book_allowed_types'] = array(
       '#type' => 'checkboxes',
       '#title' => $this->t('Content types allowed in book outlines'),
@@ -68,7 +68,7 @@ public function submitForm(array &$form, array &$form_state) {
     // that we can save them in the correct order if node type changes.
     // @see book_node_type_update().
     sort($allowed_types);
-    $this->configFactory->get('book.settings')
+    $this->config('book.settings')
     // Remove unchecked types.
       ->set('allowed_types', $allowed_types)
       ->set('child_type', $form_state['values']['book_child_type'])

core/modules/config/lib/Drupal/config/Tests/ConfigFormOverrideTest.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\config\Tests\ConfigFormOverrideTest.
+ */
+
+namespace Drupal\config\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests config overrides do not appear on forms that extend ConfigFormBase.
+ *
+ * @see \Drupal\Core\Form\ConfigFormBase
+ */
+class ConfigFormOverrideTest extends WebTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getInfo() {
+    return array(
+      'name' => 'Config form overrides',
+      'description' => 'Tests config overrides do not appear on forms that extend ConfigFormBase.',
+      'group' => 'Configuration',
+    );
+  }
+
+  /**
+   * Tests that overrides do not affect forms.
+   */
+  public function testFormsWithOverrides() {
+    $this->drupalLogin($this->drupalCreateUser(array('access administration pages', 'administer site configuration')));
+
+    $overridden_name = 'Site name global conf override';
+
+    // Set up an override.
+    $settings['config']['system.site']['name'] = (object) array(
+      'value' => $overridden_name,
+      'required' => TRUE,
+    );
+    $this->writeSettings($settings);
+    \Drupal::configFactory()->setOverrideState(TRUE);
+
+    // Test that everything on the form is the same, but that the override
+    // worked for the actual site name.
+    $this->drupalGet('admin/config/system/site-information');
+    $this->assertTitle('Site information | ' . $overridden_name);
+    $elements = $this->xpath('//input[@name="site_name"]');
+    $this->assertIdentical((string) $elements[0]['value'], 'Drupal');
+
+    // Submit the form and ensure the site name is not changed.
+    $edit = array(
+      'site_name' => 'Custom site name',
+    );
+    $this->drupalPostForm('admin/config/system/site-information', $edit, t('Save configuration'));
+    $this->assertTitle('Site information | ' . $overridden_name);
+    $elements = $this->xpath('//input[@name="site_name"]');
+    $this->assertIdentical((string) $elements[0]['value'], $edit['site_name']);
+  }
+
+}

core/modules/config_translation/lib/Drupal/config_translation/Form/ConfigTranslationFormBase.php

@@ -9,7 +9,6 @@
 
 use Drupal\config_translation\ConfigMapperManagerInterface;
 use Drupal\Core\Config\Config;
-use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Config\Schema\Element;
 use Drupal\Core\Config\TypedConfigManager;
 use Drupal\Core\Extension\ModuleHandlerInterface;
@@ -101,15 +100,12 @@ abstract class ConfigTranslationFormBase extends FormBase implements BaseFormIdI
    *   The translation storage object.
    * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
    *   The module handler to invoke the alter hook.
-   * @param \Drupal\Core\Config\ConfigFactoryInterface
-   *   The config factory.
    */
-  public function __construct(TypedConfigManager $typed_config_manager, ConfigMapperManagerInterface $config_mapper_manager, StringStorageInterface $locale_storage, ModuleHandlerInterface $module_handler, ConfigFactoryInterface $config_factory, ConfigurableLanguageManagerInterface $language_manager) {
+  public function __construct(TypedConfigManager $typed_config_manager, ConfigMapperManagerInterface $config_mapper_manager, StringStorageInterface $locale_storage, ModuleHandlerInterface $module_handler, ConfigurableLanguageManagerInterface $language_manager) {
     $this->typedConfigManager = $typed_config_manager;
     $this->configMapperManager = $config_mapper_manager;
     $this->localeStorage = $locale_storage;
     $this->moduleHandler = $module_handler;
-    $this->configFactory = $config_factory;
     $this->languageManager = $language_manager;
   }
 
@@ -122,7 +118,6 @@ public static function create(ContainerInterface $container) {
       $container->get('plugin.manager.config_translation.mapper'),
       $container->get('locale.storage'),
       $container->get('module_handler'),
-      $container->get('config.factory'),
       $container->get('language_manager')
     );
   }
@@ -176,10 +171,11 @@ public function buildForm(array $form, array &$form_state, Request $request = NU
     // Get base language configuration to display in the form before setting the
     // language to use for the form. This avoids repetitively settings and
     // resetting the language to get original values later.
-    $old_state = $this->configFactory->getOverrideState();
-    $this->configFactory->setOverrideState(FALSE);
+    $config_factory = $this->configFactory();
+    $old_state = $config_factory->getOverrideState();
+    $config_factory->setOverrideState(FALSE);
     $this->baseConfigData = $this->mapper->getConfigData();
-    $this->configFactory->setOverrideState($old_state);
+    $config_factory->setOverrideState($old_state);
 
     // Set the translation target language on the configuration factory.
     $original_language = $this->languageManager->getConfigOverrideLanguage();
@@ -198,7 +194,7 @@ public function buildForm(array $form, array &$form_state, Request $request = NU
     );
     foreach ($this->mapper->getConfigNames() as $name) {
       $form['config_names'][$name] = array('#type' => 'container');
-      $form['config_names'][$name] += $this->buildConfigForm($this->typedConfigManager->get($name), $this->config($name)->get(), $this->baseConfigData[$name]);
+      $form['config_names'][$name] += $this->buildConfigForm($this->typedConfigManager->get($name), $config_factory->get($name)->get(), $this->baseConfigData[$name]);
     }
 
     $form['actions']['#type'] = 'actions';
@@ -221,12 +217,13 @@ public function submitForm(array &$form, array &$form_state) {
     $form_values = $form_state['values']['config_names'];
 
     // For the form submission handling, use the raw data.
-    $old_state = $this->configFactory->getOverrideState();
-    $this->configFactory->setOverrideState(FALSE);
+    $config_factory = $this->configFactory();
+    $old_state = $config_factory->getOverrideState();
+    $config_factory->setOverrideState(FALSE);
 
     foreach ($this->mapper->getConfigNames() as $name) {
       // Set configuration values based on form submission and source values.
-      $base_config = $this->config($name);
+      $base_config = $config_factory->get($name);
       $config_translation = $this->languageManager->getLanguageConfigOverride($this->language->id, $name);
       $locations = $this->localeStorage->getLocations(array('type' => 'configuration', 'name' => $name));
 
@@ -241,7 +238,7 @@ public function submitForm(array &$form, array &$form_state) {
         $config_translation->save();
       }
     }
-    $this->configFactory->setOverrideState($old_state);
+    $config_factory->setOverrideState($old_state);
 
     $form_state['redirect_route'] = array(
       'route_name' => $this->mapper->getOverviewRoute(),

core/modules/contact/lib/Drupal/contact/MessageForm.php

@@ -8,7 +8,6 @@
 namespace Drupal\contact;
 
 use Drupal\Component\Utility\String;
-use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Entity\ContentEntityForm;
 use Drupal\Core\Entity\EntityManagerInterface;
 use Drupal\Core\Flood\FloodInterface;
@@ -28,13 +27,6 @@ class MessageForm extends ContentEntityForm {
    */
   protected $entity;
 
-  /**
-   * The config factory service.
-   *
-   * @var \Drupal\Core\Config\ConfigFactoryInterface
-   */
-  protected $configFactory;
-
   /**
    * The flood control mechanism.
    *
@@ -45,17 +37,14 @@ class MessageForm extends ContentEntityForm {
   /**
    * Constructs a MessageForm object.
    *
-   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
-   *   The factory for configuration objects.
    * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
    *   The entity manager.
    * @param \Drupal\Core\Flood\FloodInterface $flood
    *   The flood control mechanism.
    */
-  public function __construct(ConfigFactoryInterface $config_factory, EntityManagerInterface $entity_manager, FloodInterface $flood) {
+  public function __construct(EntityManagerInterface $entity_manager, FloodInterface $flood) {
     parent::__construct($entity_manager);
 
-    $this->configFactory = $config_factory;
     $this->flood = $flood;
   }
 
@@ -64,7 +53,6 @@ public function __construct(ConfigFactoryInterface $config_factory, EntityManage
    */
   public static function create(ContainerInterface $container) {
     return new static(
-      $container->get('config.factory'),
       $container->get('entity.manager'),
       $container->get('flood')
     );
@@ -241,7 +229,7 @@ public function save(array $form, array &$form_state) {
       drupal_mail('contact', 'page_autoreply', $sender->getEmail(), $language_interface->id, $params);
     }
 
-    $config = $this->configFactory->get('contact.settings');
+    $config = $this->config('contact.settings');
     $this->flood->register('contact', $config->get('flood.interval'));
     if (!$message->isPersonal()) {
       watchdog('contact', '%sender-name (@sender-from) sent an e-mail regarding %category.', array(

core/modules/filter/lib/Drupal/filter/FilterFormatFormBase.php

@@ -18,13 +18,6 @@
  */
 abstract class FilterFormatFormBase extends EntityForm {
 
-  /**
-   * The config factory.
-   *
-   * @var \Drupal\Core\Config\ConfigFactoryInterface
-   */
-  protected $configFactory;
-
   /**
    * The entity query factory.
    *
@@ -35,13 +28,10 @@ abstract class FilterFormatFormBase extends EntityForm {
   /**
    * Constructs a new FilterFormatFormBase.
    *
-   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
-   *   The config factory.
    * @param \Drupal\Core\Entity\Query\QueryFactory $query_factory
    *   The entity query factory.
    */
-  public function __construct(ConfigFactoryInterface $config_factory, QueryFactory $query_factory) {
-    $this->configFactory = $config_factory;
+  public function __construct(QueryFactory $query_factory) {
     $this->queryFactory = $query_factory;
   }
 
@@ -50,7 +40,6 @@ public function __construct(ConfigFactoryInterface $config_factory, QueryFactory
    */
   public static function create(ContainerInterface $container) {
     return new static(
-      $container->get('config.factory'),
       $container->get('entity.query')
     );
   }
@@ -60,7 +49,7 @@ public static function create(ContainerInterface $container) {
    */
   public function form(array $form, array &$form_state) {
     $format = $this->entity;
-    $is_fallback = ($format->id() == $this->configFactory->get('filter.settings')->get('fallback_format'));
+    $is_fallback = ($format->id() == $this->config('filter.settings')->get('fallback_format'));
 
     $form['#tree'] = TRUE;
     $form['#attached']['library'][] = 'filter/drupal.filter.admin';
@@ -100,7 +89,7 @@ public function form(array $form, array &$form_state) {
       // If editing an existing text format, pre-select its current permissions.
       $form['roles']['#default_value'] = array_keys(filter_get_roles_by_format($format));
     }
-    elseif ($admin_role = $this->configFactory->get('user.settings')->get('admin_role')) {
+    elseif ($admin_role = $this->config('user.settings')->get('admin_role')) {
       // If adding a new text format and the site has an administrative role,
       // pre-select that role so as to grant administrators access to the new
       // text format permission by default.

core/modules/forum/lib/Drupal/forum/Form/ForumForm.php

@@ -139,7 +139,7 @@ protected function forumParentSelect($tid, $title) {
       $parent = 0;
     }
 
-    $vid = $this->configFactory->get('forum.settings')->get('vocabulary');
+    $vid = $this->config('forum.settings')->get('vocabulary');
     // @todo Inject a taxonomy service when one exists.
     $children = taxonomy_get_tree($vid, $tid, NULL, TRUE);
 

core/modules/forum/lib/Drupal/forum/ForumSettingsForm.php

@@ -25,7 +25,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('forum.settings');
+    $config = $this->config('forum.settings');
 
     $options = array(5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 80, 100, 150, 200, 250, 300, 350, 400, 500);
     $form['forum_hot_topic'] = array(
@@ -64,7 +64,7 @@ public function buildForm(array $form, array &$form_state) {
    * {@inheritdoc}
    */
   public function submitForm(array &$form, array &$form_state) {
-    $this->configFactory->get('forum.settings')
+    $this->config('forum.settings')
       ->set('topics.hot_threshold', $form_state['values']['forum_hot_topic'])
       ->set('topics.page_limit', $form_state['values']['forum_per_page'])
       ->set('topics.order', $form_state['values']['forum_order'])

core/modules/language/lib/Drupal/language/Form/ContentLanguageSettingsForm.php

@@ -160,7 +160,7 @@ public function buildForm(array $form, array &$form_state) {
    * {@inheritdoc}
    */
   public function submitForm(array &$form, array &$form_state) {
-    $config = $this->configFactory->get('language.settings');
+    $config = $this->config('language.settings');
     foreach ($form_state['values']['settings'] as $entity_type => $entity_settings) {
       foreach ($entity_settings as $bundle => $bundle_settings) {
           $config->set(language_get_default_configuration_settings_key($entity_type, $bundle),

core/modules/language/lib/Drupal/language/Form/NegotiationBrowserForm.php

@@ -171,7 +171,7 @@ public function validateForm(array &$form, array &$form_state) {
   public function submitForm(array &$form, array &$form_state) {
     $mappings = $form_state['mappings'];
     if (!empty($mappings)) {
-      $config = $this->configFactory->get('language.mappings');
+      $config = $this->config('language.mappings');
       $config->setData($mappings);
       $config->save();
     }
@@ -187,7 +187,7 @@ public function submitForm(array &$form, array &$form_state) {
    *   The browser's langcode mapping configuration array.
    */
   protected function language_get_browser_drupal_langcode_mappings() {
-    $config = $this->configFactory->get('language.mappings');
+    $config = $this->config('language.mappings');
     if ($config->isNew()) {
       return array();
     }

core/modules/language/lib/Drupal/language/Form/NegotiationSelectedForm.php

@@ -26,7 +26,7 @@ public function getFormId() {
    * Implements \Drupal\Core\Form\FormInterface::buildForm().
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('language.negotiation');
+    $config = $this->config('language.negotiation');
     $form['selected_langcode'] = array(
       '#type' => 'language_select',
       '#title' => t('Language'),
@@ -41,7 +41,7 @@ public function buildForm(array $form, array &$form_state) {
    * Implements \Drupal\Core\Form\FormInterface::submitForm().
    */
   public function submitForm(array &$form, array &$form_state) {
-    $this->configFactory->get('language.negotiation')
+    $this->config('language.negotiation')
       ->set('selected_langcode', $form_state['values']['selected_langcode'])
       ->save();
 

core/modules/language/lib/Drupal/language/Form/NegotiationSessionForm.php

@@ -25,7 +25,7 @@ public function getFormId() {
    * Implements \Drupal\Core\Form\FormInterface::buildForm().
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('language.negotiation');
+    $config = $this->config('language.negotiation');
     $form['language_negotiation_session_param'] = array(
       '#title' => t('Request/session parameter'),
       '#type' => 'textfield',
@@ -42,7 +42,7 @@ public function buildForm(array $form, array &$form_state) {
    * Implements \Drupal\Core\Form\FormInterface::submitForm().
    */
   public function submitForm(array &$form, array &$form_state) {
-    $this->configFactory->get('language.settings')
+    $this->config('language.settings')
       ->set('session.parameter', $form_state['values']['language_negotiation_session_param'])
       ->save();
 

core/modules/language/lib/Drupal/language/Form/NegotiationUrlForm.php

@@ -27,7 +27,7 @@ public function getFormId() {
    */
   public function buildForm(array $form, array &$form_state) {
     global $base_url;
-    $config = $this->configFactory->get('language.negotiation');
+    $config = $this->config('language.negotiation');
 
     $form['language_negotiation_url_part'] = array(
       '#title' => t('Part of the URL that determines language'),
@@ -162,7 +162,7 @@ public function validateForm(array &$form, array &$form_state) {
    */
   public function submitForm(array &$form, array &$form_state) {
     // Save selected format (prefix or domain).
-    $this->configFactory->get('language.negotiation')
+    $this->config('language.negotiation')
       ->set('url.source', $form_state['values']['language_negotiation_url_part'])
       ->save();
 

core/modules/locale/lib/Drupal/locale/Form/LocaleSettingsForm.php

@@ -24,7 +24,7 @@ public function getFormId() {
    * Implements \Drupal\Core\Form\FormInterface::buildForm().
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('locale.settings');
+    $config = $this->config('locale.settings');
 
     $form['update_interval_days'] = array(
       '#type' => 'radios',
@@ -97,7 +97,7 @@ public function validateForm(array &$form, array &$form_state) {
   public function submitForm(array &$form, array &$form_state) {
     $values = $form_state['values'];
 
-    $config = $this->configFactory->get('locale.settings');
+    $config = $this->config('locale.settings');
     $config->set('translation.update_interval_days', $values['update_interval_days'])->save();
     $config->set('translation.use_source', $values['use_source'])->save();
 

core/modules/menu_ui/lib/Drupal/menu_ui/MenuSettingsForm.php

@@ -25,7 +25,7 @@ public function getFormId() {
    * Implements \Drupal\Core\Form\FormInterface::buildForm().
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('menu_ui.settings');
+    $config = $this->config('menu_ui.settings');
     $form['intro'] = array(
       '#type' => 'item',
       '#markup' => t('The Menu UI module allows on-the-fly creation of menu links in the content authoring forms. To configure these settings for a particular content type, visit the <a href="@content-types">Content types</a> page, click the <em>edit</em> link for the content type, and go to the <em>Menu settings</em> section.', array('@content-types' => url('admin/structure/types'))),
@@ -61,7 +61,7 @@ public function buildForm(array $form, array &$form_state) {
    * Implements \Drupal\Core\Form\FormInterface::submitForm().
    */
   public function submitForm(array &$form, array &$form_state) {
-    $this->configFactory->get('menu_ui.settings')
+    $this->config('menu_ui.settings')
       ->set('main_links', $form_state['values']['menu_main_links_source'])
       ->set('secondary_links', $form_state['values']['menu_secondary_links_source'])
       ->save();

core/modules/simpletest/lib/Drupal/simpletest/Form/SimpletestSettingsForm.php

@@ -25,7 +25,7 @@ public function getFormId() {
    * {@inheritdoc}
    */
   public function buildForm(array $form, array &$form_state) {
-    $config = $this->configFactory->get('simpletest.settings');
+    $config = $this->config('simpletest.settings');
     $form['general'] = array(
       '#type' => 'details',
       '#title' => $this->t('General'),
@@ -87,7 +87,7 @@ public function buildForm(array $form, array &$form_state) {
    * {@inheritdoc}
    */
   public function validateForm(array &$form, array &$form_state) {
-    $config = $this->configFactory->get('simpletest.settings');
+    $config = $this->config('simpletest.settings');
     // If a username was provided but a password wasn't, preserve the existing
     // password.
     if (!empty($form_state['values']['simpletest_httpauth_username']) && empty($form_state['values']['simpletest_httpauth_password'])) {
@@ -107,7 +107,7 @@ public function validateForm(array &$form, array &$form_state) {
    * {@inheritdoc}
    */
   public function submitForm(array &$form, array &$form_state) {
-    $this->configFactory->get('simpletest.settings')
+    $this->config('simpletest.settings')
       ->set('clear_results', $form_state['values']['simpletest_clear_results'])
       ->set('verbose', $form_state['values']['simpletest_verbose'])
       ->set('httpauth.method', $form_state['values']['simpletest_httpauth_method'])

core/modules/statistics/lib/Drupal/statistics/StatisticsSettingsForm.php

@@ -58,7 +58,7 @@ public function getFormId() {
    * Implements \Drupal\Core\Form\FormInterface::buildForm().
    */
   public function buildForm(array $form, array &$form_state) {