GravityView - Modify the REST response sent by GravityView to use Gravity Forms field labels instead of just the field IDs

gravityview-modify-rest-response.php

<?php

/**
 * Modify the REST response sent by GravityView to use GF form field labels instead of field IDs
 */
add_filter( 'rest_pre_echo_response', function( array $result, WP_REST_Server $server, WP_REST_Request $request ) {

	if ( empty( $result['entries'] ) ) {
		return $result;
	}

	// Here's how to get the View information:
	$view_id = $request->get_param( 'id' );

	$View = \GV\View::by_id( $view_id );

	// Gravity Forms form array
	$form = $View->form->form;

	foreach( (array) $result['entries'] as $key => $entry ) {

		foreach ( $entry as $field_id => $value ) {

			if ( ! is_numeric( $field_id ) ) {
				continue;
			}

			$field = GVCommon::get_field( $form, floor( $field_id ) );

			if ( ! $field || ! $field instanceof GF_Field ) {
				continue;
			}

			$label = $field->get_field_label( true, $value );

			$result['entries'][ $key ][ $label ] = $value;

			unset( $result['entries'][ $key ][ $field_id ] );
		}
	}

	return $result;
}, 10, 3 );