gpeb-make-administrative-fields-visible-on-edit.php: Added support …

…for securely allowing administrative fields to be edited for child entries in a Nested Form field when editing a parent entry via Entry Blocks. (#676)

gp-entry-blocks/gpeb-make-administrative-fields-visible-on-edit.php

@@ -3,26 +3,122 @@
  * Gravity Perks // Entry Blocks // Make Administrative Fields Visible on Edit
  * https://gravitywiz.com/documentation/gravity-forms-entry-blocks/
  *
- * Make administrative fields visible when editing via Entry Blocks.
+ * Make administrative fields visible when editing via Entry Blocks. Includes support for Nested Forms.
  */
-add_filter( 'gform_pre_render', 'gpeb_set_field_visbility_on_edit' );
-add_filter( 'gform_pre_process', 'gpeb_set_field_visbility_on_edit' );
+class GPEB_Editable_Admin_Fields {
 
-function gpeb_set_field_visbility_on_edit( $form ) {
+    private static $instance;
 
-	$is_block = (bool) rgpost( 'gpeb_entry_id' );
-	if ( ! $is_block ) {
-		$is_block = class_exists( 'WP_Block_Supports' ) && rgar( WP_Block_Supports::$block_to_render, 'blockName' ) === 'gp-entry-blocks/edit-form';
-		if ( ! $is_block ) {
+    public static function get_instance() {
+
+        if ( ! self::$instance ) {
+            self::$instance = new self;
+        }
+
+        return self::$instance;
+    }
+
+	private function __construct() {
+
+		add_filter( 'gform_pre_render', array( $this, 'set_field_visbility_on_edit' ) );
+		add_filter( 'gpnf_init_script_args', array( $this, 'add_gpep_context_for_gpnf_ajax_requests' ) );
+
+	}
+
+	public function set_field_visbility_on_edit( $form ) {
+
+		if ( ! $this->is_edit_entry_context( $form['id'] ) ) {
 			return $form;
 		}
+
+		foreach ( $form['fields'] as &$field ) {
+			if ( $field->visibility === 'administrative' ) {
+				$field->visibility = 'visible';
+			}
+		}
+
+		return $form;
+	}
+
+	public function add_gpep_context_for_gpnf_ajax_requests( $args ) {
+		$payload = array();
+		$block_uuid = $this->get_edit_block_uuid( $args['formId'] );
+		if ( $block_uuid ) {
+			$payload['uuid']     = $block_uuid;
+			$payload['entry_id'] = $this->get_edit_block_entry( $args['formId'] );
+			$payload['nonce']    = wp_create_nonce( $this->get_edit_block_nonce_action( $payload['uuid'], $payload['entry_id'] ) );
+		}
+		$args['ajaxContext']['gpebEditEntry'] = $payload;
+		return $args;
+	}
+
+	public function is_edit_entry_context( $form_id ) {
+
+		$block_uuid = $this->get_edit_block_uuid( $form_id );
+		if ( $block_uuid ) {
+			return true;
+		}
+
+		if ( ! defined( 'DOING_AJAX' ) ) {
+			return false;
+		}
+
+		$action  = rgpost( 'action' );
+		if ( ! in_array( $action, array( 'gpnf_edit_entry', 'gpnf_refresh_markup' ) ) ) {
+			return false;
+		}
+
+		$payload = rgars( $_REQUEST, 'gpnf_context/gpebEditEntry' );
+		if ( ! $payload || ! wp_verify_nonce( $payload['nonce'], $this->get_edit_block_nonce_action( $payload['uuid'], $payload['entry_id'] ) ) ) {
+			return false;
+		}
+
+		// Additional security not required for adding new child entries.
+		if ( rgpost( 'action' ) === 'gpnf_refresh_markup' ) {
+			return true;
+		}
+
+		$child_entry  = GFAPI::get_entry( gp_nested_forms()->get_posted_entry_id() );
+		$parent_entry = GFAPI::get_entry( rgar( $child_entry, 'gpnf_entry_parent' ) );
+		if ( $parent_entry['id'] == $payload['entry_id'] ) {
+			return true;
+		}
+
+		return false;
+	}
+
+	public function get_edit_queryer( $form_id ) {
+		if ( method_exists( 'GP_Entry_Blocks\GF_Queryer', 'attach_to_current_block' ) ) {
+			$gpeb_queryer = GP_Entry_Blocks\GF_Queryer::attach_to_current_block();
+			if ( $gpeb_queryer && $gpeb_queryer->is_edit_entry() && $gpeb_queryer->form_id == $form_id ) {
+				return $gpeb_queryer;
+			}
+		}
+		return false;
+	}
+
+	public function get_edit_block_uuid( $form_id ) {
+		$gpeb_queryer = $this->get_edit_queryer( $form_id );
+		if ( $gpeb_queryer ) {
+			return $gpeb_queryer->block_context['gp-entry-blocks/uuid'];
+		}
 	}
 
-	foreach ( $form['fields'] as &$field ) {
-		if ( $field->visibility === 'administrative' ) {
-			$field->visibility = 'visible';
+	public function get_edit_block_entry( $form_id ) {
+		$gpeb_queryer = $this->get_edit_queryer( $form_id );
+		if ( $gpeb_queryer ) {
+			return $gpeb_queryer->entry['id'];
 		}
 	}
 
-	return $form;
+	public function get_edit_block_nonce_action( $block_uuid, $entry_id ) {
+		return implode( '/', array( 'gpeb_edit_entry', $block_uuid, $entry_id ) );
+	}
+
 }
+
+function gpeb_editable_admin_fields() {
+    return GPEB_Editable_Admin_Fields::get_instance();
+}
+
+gpeb_editable_admin_fields();