WPGraphQL add field format plain text

README.md

WPGraphQL add field format plain text

This small plugin adds a new format to retrieve excerpt or title in text plain format instead of rendered.

Usage

0. Install WPGraphQL
1. Download or copy the wpgraphql-field-format-text-plain.php file
2. Place it under wp-content/mu-plugins
3. Done

wpgraphql-field-format-text-plain.php

<?php
/**
 * Plugin Name:     WPGraphQL Plain Text Field Format
 * Plugin URI:      https://gist.github.com/lightningspirit/2334e1fcc2ca05508e868b39fc559e7a
 * Author:          Move Your Digital, Inc.
 * Author URI:      https://moveyourdigital.com
 * Version:         0.1.0
 *
 * @package         WPGraphQL_Plain_Text_Field_Format
 */

/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

use GraphQL\Type\Definition\FieldDefinition;
use GraphQL\Type\Definition\ResolveInfo;
use WPGraphQL\AppContext;

/**
 *
 */
add_filter('graphql_PostObjectFieldFormatEnum_values', function ($values) {
  $values['TEXT_PLAIN'] = [
    'value' => 'text_plain',
    'description' => __('Provide the field in text/plain format', 'wp-graphql'),
  ];

  return $values;
});


/**
 *
 */
add_filter('graphql_pre_resolve_field', function ($nil, $source, array $args, AppContext $context, ResolveInfo $info, string $type_name, string $field_key, FieldDefinition $field, $field_resolver) {
  if (!in_array($field_key, ['excerpt', 'title'])) {
    return $nil;
  }

  if (isset($args['format']) && $args['format'] != "text_plain") {
    return $nil;
  }

  $value = $source->{"${field_key}Rendered"};

  if ($value) {
    return wp_strip_all_tags($value);
  }

  return $nil;
}, 10, 9);