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<?php |
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/* |
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* Display a list of recent posts from a WordPress.com or Jetpack-enabled blog. |
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*/ |
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class Jetpack_Display_Posts_Widget extends Jetpack_Display_Posts_Widget__Base { |
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/** |
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* @var string Widget options key prefix. |
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*/ |
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public $widget_options_key_prefix = 'display_posts_site_data_'; |
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/** |
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* @var string The name of the cron that will update widget data. |
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*/ |
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public static $cron_name = 'jetpack_display_posts_widget_cron_update'; |
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// DATA STORE |
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/** |
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* Gets blog data from the cache. |
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* |
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* @param string $site |
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* |
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* @return array|WP_Error |
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*/ |
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public function get_blog_data( $site ) { |
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// load from cache, if nothing return an error |
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$site_hash = $this->get_site_hash( $site ); |
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$cached_data = $this->wp_get_option( $this->widget_options_key_prefix . $site_hash ); |
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/** |
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* If the cache is empty, return an empty_cache error. |
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*/ |
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if ( false === $cached_data ) { |
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return new WP_Error( |
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'empty_cache', |
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__( 'Information about this blog is currently being retrieved.', 'jetpack' ) |
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); |
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} |
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return $cached_data; |
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} |
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/** |
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* Update a widget instance. |
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* |
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* @param string $site The site to fetch the latest data for. |
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* |
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* @return array - the new data |
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*/ |
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public function update_instance( $site ) { |
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/** |
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* Fetch current information for a site. |
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*/ |
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$site_hash = $this->get_site_hash( $site ); |
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$option_key = $this->widget_options_key_prefix . $site_hash; |
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$instance_data = $this->wp_get_option( $option_key ); |
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/** |
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* Fetch blog data and save it in $instance_data. |
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*/ |
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$new_data = $this->fetch_blog_data( $site, $instance_data ); |
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/** |
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* If the option doesn't exist yet - create a new option |
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*/ |
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if ( false === $instance_data ) { |
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$this->wp_add_option( $option_key, $new_data ); |
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} |
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else { |
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$this->wp_update_option( $option_key, $new_data ); |
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} |
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return $new_data; |
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} |
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// WIDGET API |
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public function update( $new_instance, $old_instance ) { |
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$instance = parent::update( $new_instance, $old_instance ); |
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/** |
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* Forcefully activate the update cron when saving widget instance. |
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* |
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* So we can be sure that it will be running later. |
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*/ |
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$this->activate_cron(); |
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return $instance; |
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} |
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// CRON |
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/** |
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* Activates widget update cron task. |
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*/ |
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public static function activate_cron() { |
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if ( ! wp_next_scheduled( self::$cron_name ) ) { |
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wp_schedule_event( time(), 'minutes_10', self::$cron_name ); |
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} |
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} |
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/** |
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* Deactivates widget update cron task. |
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* |
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* This is a wrapper over the static method as it provides some syntactic sugar. |
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*/ |
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public function deactivate_cron() { |
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self::deactivate_cron_static(); |
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} |
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/** |
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* Deactivates widget update cron task. |
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*/ |
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public static function deactivate_cron_static() { |
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$next_scheduled_time = wp_next_scheduled( self::$cron_name ); |
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wp_unschedule_event( $next_scheduled_time, self::$cron_name ); |
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} |
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/** |
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* Checks if the update cron should be running and returns appropriate result. |
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* |
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* @return bool If the cron should be running or not. |
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*/ |
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public function should_cron_be_running() { |
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/** |
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* The cron doesn't need to run empty loops. |
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*/ |
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$widget_instances = $this->get_instances_sites(); |
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if ( empty( $widget_instances ) || ! is_array( $widget_instances ) ) { |
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return false; |
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} |
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if ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) { |
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/** |
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* If Jetpack is not active or in development mode, we don't want to update widget data. |
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*/ |
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if ( ! Jetpack::is_active() && ! Jetpack::is_development_mode() ) { |
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return false; |
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} |
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/** |
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* If Extra Sidebar Widgets module is not active, we don't need to update widget data. |
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*/ |
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if ( ! Jetpack::is_module_active( 'widgets' ) ) { |
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return false; |
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} |
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} |
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/** |
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* If none of the above checks failed, then we definitely want to update widget data. |
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*/ |
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return true; |
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} |
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/** |
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* Main cron code. Updates all instances of the widget. |
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* |
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* @return bool |
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*/ |
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public function cron_task() { |
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/** |
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* If the cron should not be running, disable it. |
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*/ |
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if ( false === $this->should_cron_be_running() ) { |
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return true; |
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} |
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$instances_to_update = $this->get_instances_sites(); |
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/** |
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* If no instances are found to be updated - stop. |
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*/ |
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if ( empty( $instances_to_update ) || ! is_array( $instances_to_update ) ) { |
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return true; |
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} |
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foreach ( $instances_to_update as $site_url ) { |
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$this->update_instance( $site_url ); |
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} |
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return true; |
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} |
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/** |
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* Get a list of unique sites from all instances of the widget. |
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* |
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* @return array|bool |
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*/ |
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public function get_instances_sites() { |
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$widget_settings = $this->wp_get_option( 'widget_jetpack_display_posts_widget' ); |
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/** |
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* If the widget still hasn't been added anywhere, the config will not be present. |
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* |
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* In such case we don't want to continue execution. |
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*/ |
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if ( false === $widget_settings || ! is_array( $widget_settings ) ) { |
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return false; |
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} |
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$urls = array(); |
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foreach ( $widget_settings as $widget_instance_data ) { |
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if ( isset( $widget_instance_data['url'] ) && ! empty( $widget_instance_data['url'] ) ) { |
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$urls[] = $widget_instance_data['url']; |
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} |
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} |
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/** |
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* Make sure only unique URLs are returned. |
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*/ |
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$urls = array_unique( $urls ); |
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return $urls; |
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} |
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// MOCKABLES |
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/** |
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* This is just to make method mocks in the unit tests easier. |
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* |
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* @param string $param Option key to get |
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* |
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* @return mixed |
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* |
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* @codeCoverageIgnore |
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*/ |
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public function wp_get_option( $param ) { |
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return get_option( $param ); |
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} |
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/** |
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* This is just to make method mocks in the unit tests easier. |
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* |
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* @param string $option_name Option name to be added |
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* @param mixed $option_value Option value |
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* |
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* @return mixed |
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* |
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* @codeCoverageIgnore |
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*/ |
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public function wp_add_option( $option_name, $option_value ) { |
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return add_option( $option_name, $option_value ); |
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} |
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/** |
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* This is just to make method mocks in the unit tests easier. |
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* |
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* @param string $option_name Option name to be updated |
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* @param mixed $option_value Option value |
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* |
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* @return mixed |
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* |
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* @codeCoverageIgnore |
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*/ |
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public function wp_update_option( $option_name, $option_value ) { |
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return update_option( $option_name, $option_value ); |
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} |
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} |
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