php – 在WordPress中获得多个获奖者的奖励

> Register a custom post type奖项,包括一些功能(标题,编辑和图像).
>添加metabox以处理获奖者(registered users).
>附上custom taxonomy奖品.
>使用它,您可以使用默认的WP_Query功能并创建常规主题模板或小部件或短代码来输出结果.

有很好的插件来管理CPT和自定义字段使这很容易,但这里是上面列出的小插件：

<?php
/**
 * Plugin Name: (SO) Awards,prizes and winners
 * Plugin URI:  https://stackoverflow.com/q/25936506/1287812
 * Version:     0.1
 * Author:      brasofilo 
 */

class SO_25936506
{
    private $cpt = 'reward';

    public function __construct()
    {
        add_action( 'init',array( $this,'init' ) );
        add_action( 'save_post','save' ),10,2 );
    }

     public function init() {
        $labels = array(
            'name' => _x( 'Rewards','post type general name' ),'singular_name' => _x( 'Reward','post type singular name' ),'add_new' => _x( 'Add New','reward' ),'add_new_item' => __( 'Add New Reward' ),'edit_item' => __( 'Edit Reward' ),'new_item' => __( 'New Reward' ),'all_items' => __( 'All Rewards' ),'view_item' => __( 'View Reward' ),'search_items' => __( 'Search Rewards' ),'not_found' =>  __( 'No rewards found' ),'not_found_in_trash' => __( 'No rewards found in Trash' ),'parent_item_colon' => '','menu_name' => __( 'Rewards' )
        );
        $args = array(
            'labels' => $labels,'public' => true,'publicly_queryable' => true,'show_ui' => true,'show_in_menu' => true,'query_var' => true,'rewrite' => array( 'slug' => _x( 'reward','URL slug' ) ),'capability_type' => 'page','has_archive' => true,'hierarchical' => false,'menu_position' => null,'taxonomies' => array('prize'),'supports' => array( 'title','editor','thumbnail' ),'register_meta_box_cb' => array( $this,'add_metabox' )
        );
        register_post_type( $this->cpt,$args );

        register_taxonomy('prize',$this->cpt,array(
            // Hierarchical taxonomy (like categories)
            'hierarchical' => true,// This array of options controls the labels displayed in the WordPress Admin UI
            'labels' => array(
                'name' => _x( 'Prizes','taxonomy general name' ),'singular_name' => _x( 'Prize','taxonomy singular name' ),'search_items' =>  __( 'Search Prizes' ),'all_items' => __( 'All Prizes' ),'parent_item' => __( 'Parent Prize' ),'parent_item_colon' => __( 'Parent Prize:' ),'edit_item' => __( 'Edit Prize' ),'update_item' => __( 'Update Prize' ),'add_new_item' => __( 'Add New Prize' ),'new_item_name' => __( 'New Prize Name' ),'menu_name' => __( 'Prizes' ),),// Control the slugs used for this taxonomy
            'rewrite' => array(
                'slug' => 'prizes',// 
                'with_front' => false,'hierarchical' => true 
            ),));
    }

    public function add_metabox()
    {
        add_meta_box( 
            'winners','Winners','do_metabox' ),'normal','default',array( // to build the custom fields
                '_winner_gold' => array( 'title'=>'Gold','desc' => 'G desc' ),'_winner_silver' => array( 'title'=>'Silver','desc' => 'S desc' ),'_winner_bronze' => array( 'title'=>'Bronze','desc' => 'B desc' )
            )
        );
    }

    // back function of add meta box that displays the meta box in the post edit screen
    public function do_metabox( $post,$box )
    {
        wp_nonce_field( plugin_basename( __FILE__ ),'noncename_so_25936506' );
        foreach( $box['args'] as $field => $value )
            $this->print_field( $field,$value,$post->ID );
    }

    public function print_field( $field,$post_id )
    {
        $post_meta = get_post_meta( $post_id,$field,true);
        $selected = ($post_meta) ? $post_meta : false;
        $users_dd = wp_dropdown_users(array(
            'name' => 'author','echo'=>false,'name'=>$field,'show_option_none'=>'Select winners'
        ));
        printf(
            '<label>%s: </label>%s <small>%s</small><br/>',$value['title'],$users_dd,$value['desc']
        );
    }

    public function save( $post_id,$post_object ) 
    {
        // Verify auto save 
        if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) 
            return;

        // Security
        if ( 
            !isset( $_POST['noncename_so_25936506'] ) 
            || !wp_verify_nonce( $_POST['noncename_so_25936506'],plugin_basename( __FILE__ ) ) 
            )
            return;

        if ( $this->cpt !== $post_object->post_type )
            return;

        // Process post data
        foreach( array('_winner_gold','_winner_silver','_winner_bronze') as $field )
        {
            if ( isset( $_POST[$field] )  )
                update_post_meta( $post_id,$_POST[$field] );
            else 
                delete_post_meta( $post_id,$field );
        }
    }
}
new SO_25936506();