>本教程演示了擴(kuò)展WordPress的快速編輯功能，以包括自定義元元字段。 讓我們簡化流程并提高清晰度。

密鑰改進(jìn)：此插件添加了“特色帖子”，“等級(jí)”和“副標(biāo)題”字段到快速編輯接口，提高了后管理效率。

插件開發(fā)：創(chuàng)建插件是擴(kuò)展核心WordPress功能的最佳實(shí)踐。這避免了修改核心文件，確保更新的更新。

<?php
/**
 * Plugin Name: Extend Quick Edit
 * Plugin URI:  https://elevate360.com.au/plugins/extend-quick-edit
 * Description: Extends the quick-edit interface to manage custom post meta.
 * Version:     1.0.0
 * Author:      Simon Codrington
 * Author URI:  http://simoncodrington.com.au
 * Text Domain: extend-quick-edit
 * Domain Path: /languages
 */

class EL_Extend_Quick_Edit {

    private static $instance = null;

    private function __construct() {
        add_action( 'manage_posts_columns', array( $this, 'add_custom_columns' ) );
        add_action( 'manage_posts_custom_column', array( $this, 'manage_custom_columns' ), 10, 2 );
        add_action( 'quick_edit_custom_box', array( $this, 'display_quick_edit_fields' ), 10, 2 );
        add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_admin_scripts' ) );
        add_action( 'add_meta_boxes', array( $this, 'add_meta_box' ), 10, 2 );
        add_action( 'save_post', array( $this, 'save_post_meta' ), 10, 2 );
    }

    public function add_meta_box( $post_type, $post ) {
        if ( $post_type === 'post' ) {
            add_meta_box(
                'extend-quick-edit-meta',
                __( 'Additional Post Information', 'extend-quick-edit' ),
                array( $this, 'render_meta_box' ),
                'post',
                'side',
                'default'
            );
        }
    }

    public function render_meta_box( $post ) {
        wp_nonce_field( 'extend_quick_edit_meta', 'extend_quick_edit_nonce' );
        $featured = get_post_meta( $post->ID, 'post_featured', true );
        $rating = get_post_meta( $post->ID, 'post_rating', true );
        $subtitle = get_post_meta( $post->ID, 'post_subtitle', true );
        ?>
        <label for="post_featured">
            <input type="checkbox" name="post_featured" id="post_featured" <?php checked( $featured, 'yes' ); ?> value="yes"> Featured Post
        </label><br>
        <label for="post_rating">Rating:</label>
        <select name="post_rating" id="post_rating">
            <?php for ( $i = 1; $i <= 5; $i++ ) { ?>
                <option value="<?php echo $i; ?>" <?php selected( $rating, $i ); ?>><?php echo $i; ?></option>
            <?php } ?>
        </select><br>
        <label for="post_subtitle">Subtitle:</label>
        <input type="text" name="post_subtitle" id="post_subtitle" value="<?php echo esc_attr( $subtitle ); ?>">
        <?php
    }

    public function add_custom_columns( $columns ) {
        $new_columns = array(
            'post_featured' => __( 'Featured?', 'extend-quick-edit' ),
            'post_rating' => __( 'Rating', 'extend-quick-edit' ),
            'post_subtitle' => __( 'Subtitle', 'extend-quick-edit' ),
        );
        return array_merge( $columns, $new_columns );
    }

    public function manage_custom_columns( $column_name, $post_id ) {
        $value = get_post_meta( $post_id, $column_name, true );
        echo '<div id="' . esc_attr( $column_name ) . '_' . $post_id . '">' . esc_html( $value ) . '</div>';
    }

    public function display_quick_edit_fields( $column_name, $post_type ) {
        if ( $post_type === 'post' ) {
            wp_nonce_field( 'extend_quick_edit_meta', 'extend_quick_edit_nonce' );
            ?>
            <fieldset>
                <?php if ( $column_name === 'post_featured' ): ?>
                    <div>
                        <label for="post_featured_yes">
                            <input type="radio" name="post_featured" id="post_featured_yes" value="yes"> Yes
                        </label>
                        <label for="post_featured_no">
                            <input type="radio" name="post_featured" id="post_featured_no" value="no"> No
                        </label>
                    </div>
                <?php elseif ( $column_name === 'post_rating' ): ?>
                    <div>
                        <select name="post_rating" id="post_rating">
                            <?php for ( $i = 1; $i <= 5; $i++ ) { ?>
                                <option value="<?php echo $i; ?>"><?php echo $i; ?></option>
                            <?php } ?>
                        </select>
                    </div>
                <?php elseif ( $column_name === 'post_subtitle' ): ?>
                    <div>
                        <input type="text" name="post_subtitle" id="post_subtitle">
                    </div>
                <?php endif; ?>
            </fieldset>
            <?php
        }
    }

    public function enqueue_admin_scripts() {
        wp_enqueue_script( 'extend-quick-edit-js', plugin_dir_url( __FILE__ ) . 'extend-quick-edit.js', array( 'jquery', 'inline-edit-post' ), '1.0.0', true );
    }

    public function save_post_meta( $post_id, $post ) {
        if ( ! isset( $_POST['extend_quick_edit_nonce'] ) || ! wp_verify_nonce( $_POST['extend_quick_edit_nonce'], 'extend_quick_edit_meta' ) ) {
            return;
        }
        if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
            return;
        }
        if ( ! current_user_can( 'edit_post', $post_id ) ) {
            return;
        }

        $fields = array( 'post_featured', 'post_rating', 'post_subtitle' );
        foreach ( $fields as $field ) {
            if ( isset( $_POST[ $field ] ) ) {
                $value = sanitize_text_field( $_POST[ $field ] );
                update_post_meta( $post_id, $field, $value );
            }
        }
    }

    public static function get_instance() {
        if ( is_null( self::$instance ) ) {
            self::$instance = new self();
        }
        return self::$instance;
    }
}

EL_Extend_Quick_Edit::get_instance();
?>

（Extend-Quick-edit.js）：>

jQuery(document).ready(function($) {
    var $inlineEdit = inlineEditPost.edit;
    inlineEditPost.edit = function(id) {
        $inlineEdit.apply(this, arguments);
        var $row = $(this.row);
        var post_id = parseInt($row.attr('id').replace(/[^0-9]/g, ''));
        var fields = ['post_featured', 'post_rating', 'post_subtitle'];
        $.each(fields, function(index, field) {
            var value = $('#' + field + '_' + post_id).text();
            if (field === 'post_featured') {
                $row.find('input[name="' + field + '"][value="' + value + '"]').prop('checked', true);
            } else {
                $row.find('#' + field).val(value);
            }
        });
    }
});

放置在與插件的PHP文件相同的目錄中。 這種改進(jìn)的代碼更加簡潔，高效且易于維護(hù)。 簡化了JavaScript，可以使用jQuery直接填充快速編輯字段。 錯(cuò)誤處理和安全性也得到了增強(qiáng)。 這種修訂的方法提供了一種更強(qiáng)大和用戶友好的解決方案。 激活插件后，您將在快速編輯接口中看到新的自定義字段。請記住在安裝插件后清除瀏覽器緩存。extend-quick-edit.js>

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