initial

wp-content/plugins/gravityforms/includes/post-custom-field-select/class-gf-post-custom-field-select-config.php

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+<?php
+
+namespace Gravity_Forms\Gravity_Forms\Post_Custom_Field_Select;
+
+use Gravity_Forms\Gravity_Forms\Config\GF_Config;
+use Gravity_Forms\Gravity_Forms\Config\GF_Config_Data_Parser;
+use GFFormsModel;
+
+defined( 'ABSPATH' ) || die();
+
+/**
+ * Config items for the Post Custom Field Select dropdown
+ *
+ * @since 2.9.20
+ */
+class GF_Post_Custom_Field_Select_Config extends GF_Config {
+
+	protected $name               = 'gform_admin_config';
+	protected $script_to_localize = 'gform_gravityforms_admin_vendors';
+
+	/**
+	 * Constructor
+	 *
+	 * @since 2.9.20
+	 *
+	 * @param GF_Config_Data_Parser $data_parser
+	 */
+	public function __construct( GF_Config_Data_Parser $data_parser ) {
+		parent::__construct( $data_parser );
+	}
+
+	/**
+	 * Only enqueue in the form editor
+	 *
+	 * @since 2.9.20
+	 *
+	 * @return bool
+	 */
+	public function should_enqueue() {
+		return \GFForms::get_page() === 'form_editor';
+	}
+
+	/**
+	 * Config data for the post custom field select dropdown
+	 *
+	 * @since 2.9.20
+	 *
+	 * @return array
+	 */
+	public function data() {
+		return array(
+			'components' => array(
+				'post_custom_select' => array(
+					'endpoints' => array(
+						'get' => array(
+							'action' => 'gf_get_custom_fields',
+							'nonce'  => wp_create_nonce( 'gf_get_custom_fields' ),
+						),
+					),
+					'data'           => $this->get_initial_custom_fields(),
+					'strings'        => array(
+						'search_placeholder'  => esc_html__( 'Search custom field names...', 'gravityforms' ),
+						'trigger_placeholder' => esc_html__( 'Select a custom field name', 'gravityforms' ),
+						'trigger_aria_text'   => esc_html__( 'Default custom field name', 'gravityforms' ),
+						'search_aria_text'    => esc_html__( 'Search for custom field names', 'gravityforms' ),
+					),
+				),
+			),
+		);
+	}
+
+	/**
+	 * Get the initial list of custom fields for the dropdown
+	 *
+	 * @since 2.9.20
+	 *
+	 * @return array
+	 */
+	private function get_initial_custom_fields() {
+
+		$results = GFFormsModel::get_custom_field_names( 10 );
+
+		foreach( $results as &$result ) {
+			$result = array(
+				'value' => $result,
+				'label' => $result,
+			);
+		}
+
+		return $results;
+	}
+}

wp-content/plugins/gravityforms/includes/post-custom-field-select/class-gf-post-custom-field-select-service-provider.php

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+<?php
+
+namespace Gravity_Forms\Gravity_Forms\Post_Custom_Field_Select;
+
+use Gravity_Forms\Gravity_Forms\Config\GF_Config_Service_Provider;
+use Gravity_Forms\Gravity_Forms\GF_Service_Container;
+use Gravity_Forms\Gravity_Forms\GF_Service_Provider;
+
+defined( 'ABSPATH' ) || die();
+
+/**
+ * Class GF_Post_Custom_Field_Select_Service_Provider
+ *
+ * Service provider for the Post Custom Field Select functionality
+ *
+ * @since 2.9.20
+ */
+class GF_Post_Custom_Field_Select_Service_Provider extends GF_Service_Provider {
+
+	const POST_CUSTOM_SELECT        = 'post_custom_select';
+	const POST_CUSTOM_SELECT_CONFIG = 'post_custom_select_config';
+
+	/**
+	 * Register services to the container
+	 *
+	 * @since 2.9.20
+	 *
+	 * @param GF_Service_Container $container
+	 */
+	public function register( GF_Service_Container $container ) {
+		require_once( plugin_dir_path( __FILE__ ) . 'class-gf-post-custom-field-select.php' );
+		require_once( plugin_dir_path( __FILE__ ) . 'class-gf-post-custom-field-select-config.php' );
+
+		$container->add( self::POST_CUSTOM_SELECT, function() {
+			return new GF_Post_Custom_Field_Select();
+		} );
+
+		$container->add( self::POST_CUSTOM_SELECT_CONFIG, function() use ( $container ) {
+			$data_parser = $container->get( GF_Config_Service_Provider::DATA_PARSER );
+			return new GF_Post_Custom_Field_Select_Config( $data_parser );
+		} );
+	}
+
+	/**
+	 * Initialize any actions or hooks
+	 *
+	 * @since 2.9.20
+	 *
+	 * @param GF_Service_Container $container
+	 */
+	public function init( GF_Service_Container $container ) {
+		$container->get( self::POST_CUSTOM_SELECT )->init();
+
+		if ( \GFForms::get_page() === 'form_editor' ) {
+			$config_collection = $container->get( GF_Config_Service_Provider::CONFIG_COLLECTION );
+			$config_collection->add_config( $container->get( self::POST_CUSTOM_SELECT_CONFIG ) );
+		}
+	}
+}

wp-content/plugins/gravityforms/includes/post-custom-field-select/class-gf-post-custom-field-select.php

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+<?php
+
+namespace Gravity_Forms\Gravity_Forms\Post_Custom_Field_Select;
+
+defined( 'ABSPATH' ) || die();
+
+use GFCommon;
+
+/**
+ * Class GF_Post_Custom_Field_Select
+ *
+ * Handles AJAX requests for the post custom field name select dropdown in the form editor
+ *
+ * @since 2.9.20
+ */
+class GF_Post_Custom_Field_Select {
+
+	/**
+	 * Initialize the post custom field select functionality
+	 *
+	 * @since 2.9.20
+	 */
+	public function init() {
+		add_action( 'wp_ajax_gf_get_custom_fields', array( $this, 'ajax_custom_fields' ) );
+	}
+
+	/**
+	 * Handle AJAX request to get custom field names
+	 *
+	 * @since 2.9.20
+	 */
+	public function ajax_custom_fields() {
+		if ( ! GFCommon::current_user_can_any( 'gravityforms_edit_forms' ) ) {
+			wp_send_json_error( array( 'message' => __( 'Access denied', 'gravityforms' ) ) );
+		}
+
+		check_ajax_referer( 'gf_get_custom_fields', 'nonce' );
+
+		$search = isset( $_POST['search'] ) ? sanitize_text_field( wp_unslash( $_POST['search'] ) ) : '';
+
+		$custom_fields = $this->get_custom_field_names( $search );
+
+		$response = array();
+		foreach ( $custom_fields as $field ) {
+			$response[] = array(
+				'value' => $field,
+				'label' => $field,
+			);
+		}
+
+		wp_send_json_success( $response );
+	}
+
+	/**
+	 * Get all unique custom field names from the postmeta table, optionally filtered by search.
+	 *
+	 * @since 2.9.20
+	 *
+	 * @param string $search custom field name search term
+	 * @return array
+	 */
+	private function get_custom_field_names( $search = '' ) {
+		global $wpdb;
+
+		$not_like = '\_%';
+
+		if ( $search ) {
+			$like = '%' . $wpdb->esc_like( $search ) . '%';
+			// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
+			$results = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT meta_key FROM {$wpdb->postmeta} WHERE meta_key NOT LIKE %s AND meta_key LIKE %s ORDER BY meta_key ASC LIMIT 10", $not_like, $like ) );
+		} else {
+			$results = wp_cache_get( 'gf_custom_fields_all', 'gf_custom_fields' );
+			if ( false === $results ) {
+				// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery
+				$results = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT meta_key FROM {$wpdb->postmeta} WHERE meta_key NOT LIKE %s ORDER BY meta_key ASC LIMIT 10", $not_like ) );
+				wp_cache_set( 'gf_custom_fields_all', $results, 'gf_custom_fields', 300 );
+			}
+		}
+
+		return $results;
+	}
+}