plugin install

wp/wp-content/plugins/gravityforms/includes/query/json-handlers/class-gf-query-json-handler.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace Gravity_Forms\Gravity_Forms\Query\JSON_Handlers;
+
+/**
+ * GF_JSON_Handler implementation which uses a MySQL JSON query to gather data. More performant that string-based
+ * queries, but only available in MySQL 5.7+.
+ *
+ * @since 2.7
+ */
+class GF_Query_JSON_Handler extends GF_JSON_Handler {
+
+	/**
+	 * Perform the query against the DB.
+	 *
+	 * @param string $slug
+	 *
+	 * @return string
+	 */
+	public function query( $slug ) {
+		global $wpdb;
+
+		$setting_name = $this->get_setting_name();
+		$section      = $this->get_section_name();
+
+		// JSON Selector is formatted as `{"setting_name": "value"}`
+		$json_selector = sprintf( '{"%s": "%s"}', $setting_name, $slug );
+		$query         = "SELECT form_id FROM {$wpdb->prefix}gf_form_meta AS meta LEFT JOIN {$wpdb->prefix}gf_form AS form ON form.id = meta.form_id WHERE is_trash = 0 AND is_active = 1 AND JSON_CONTAINS(display_meta, %s, %s)";
+
+		// To define a "section" to query against, we pass it as `$.section` as the third argument to JSON_CONTAINS.
+		$prepared_query = $wpdb->prepare( $query, $json_selector, sprintf( '$.%s', $section ) );
+
+		return $wpdb->get_var( $prepared_query );
+	}
+
+}