Angewandtes Beispiel für einen Shortcode mit beliebigen Metafeld, erarbeitet im Stream von nexTab_de 🙂
Gist vom Plugin:
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| <?php | |
| /** | |
| * Plugin Name: Metafield Shortcode Micro Plugin. | |
| * Description: Inserts content of a custom meta field using a shortcode. Use [mfs_custom_field field='my_field_name'] to insert any kind of meta field value inside of your posts. Works both in WP v3.7 – 5.x and ClassicPress. | |
| * Version: 1.0 | |
| * Author: Fabian Wolf | |
| * Author URI: https://usability-idealist.net/ | |
| * License: GNU GPL v2 | |
| */ | |
| /** | |
| * Usage instruction: | |
| * 1. Save this file to your local system | |
| * 2. Upload the file to your wp-content/plugins/ folder | |
| * 3. Head over to the WordPress admin, and active the plugin under Plugins 🙂 | |
| */ | |
| if( !function_exists( '_mfs_add_custom_field_shortcode' ) ) { | |
| function _mfs_add_custom_field_shortcode( $attr, $content = '' ) { | |
| $return = $content; | |
| // default attributes, which are being used if no value is set, but also, to only allow these specific variables | |
| $default_attr = array( | |
| 'field' => '_my_custom_field_name', | |
| 'title' => 'Videodauer:', | |
| 'html_class' => 'custom_field_value_wrapper', | |
| ); | |
| $params = shortcode_atts( $default_attr, $attr ); | |
| /** | |
| * Extract parsed parameters into the current scope. Avoid overriding existing variables. | |
| * Also see @link https://www.php.net/extract | |
| */ | |
| extract( $params, EXTR_SKIP ); | |
| $field_value = get_post_meta( get_the_ID(), $field, true ); | |
| /** | |
| * NOTE: only generate return data if our field both exists AND contains any kind of data 😉 | |
| * Construct the return value in HTML. | |
| */ | |
| if( !empty( $field_value ) ) { | |
| $return = '<div'; | |
| if( !empty( $html_class ) ) { | |
| $return .= ' class="' . $html_class . '"'; | |
| } | |
| $return .= '">'; | |
| if( !empty( $title ) ) { | |
| $return .= '<strong>' . $title . '</strong>'; | |
| } | |
| // additional tag for better styling 🙂 | |
| $return .= '<span>' . $field_value . '</span>'; | |
| $return .= '</div>'; | |
| } | |
| return $return; | |
| } | |
| /** | |
| * Usage: | |
| * | |
| * [mfs_custom_field field="meta field name" title="optional title" html_class="my-html-class and-some moar"] | |
| * | |
| * | |
| * @param string $field The name of the meta field to extract the content from. Required. | |
| * @param string $title Optional custom title. | |
| * @param string $html_class Optional HTML wrapper class. | |
| */ | |
| add_shortcode( 'mfs_custom_field', '_mfs_add_custom_field_shortcode' ); | |
| } | |
| // closing tag intentionally left out ^^ |
gist.github.com/ginsterbusch/1c9ec55121aa134fd90de37327fbe504
Beispiel:
[ mfs_custom_field field="my_field_name" title="Mein Titel: " ]
[mfs_custom_field field=“mfs_test“ title=“Mein Titel: „]