WordPress:事件日历,ACF:基于ACF关系字段的TEC过滤器栏过滤器

时间:2018-10-07 16:58:29

标签: wordpress advanced-custom-fields

我一直在为此苦苦挣扎。我创建了一种自定义帖子类型,称为“ pt_initiatives”,事件日历创建的一种自定义帖子类型为“ tribe_events”。使用“高级自定义字段”,我向两个帖子类型都添加了一个关系字段,这也是双向的。关系字段称为“ bi_initiatives-events”。

我添加了带有过滤器栏的Events Calendar Pro。我正在尝试创建一个过滤器,以将pt_initiatives帖子显示为多复选框过滤器中的选项。 (这些职位只有9个)。到目前为止,我一直在工作。当选择了这些pt_initiatives之一时,我对如何更新事件列表有些迷惑。

我一直在使用wpdb查询,但没有成功。我不确定如何告诉它查看tribe_events帖子以查找哪些帖子具有共同点。我一直在搜索互联网,没有发现任何有用的信息,并且活动日历的人们似乎并不热衷于提供帮助,因为这被认为是“定制”。但是,它们提供了将过滤器作为功能添加的功能...关于如何执行此操作,他们的页面含糊不清,但我个人认为它没有太大帮助。

我对编写wpdb查询不太熟悉,因此您可以看到我添加了一个post循环来实现相同的目的。至少,我认为这与我遇到的一些示例的输出是相同的。

谢谢!

   class Tribe__Events__Filterbar__Filters__Initiative extends Tribe__Events__Filterbar__Filter {
    public $type = 'checkbox';

    public function get_admin_form() {
        $title = $this->get_title_field();
        $type = $this->get_multichoice_type_field();
        return $title.$type;
    }

    protected function get_values() {
        /** @var wpdb $wpdb */
        global $wpdb;

        // get initiative IDs associated with published posts
        // $initiative_ids = $wpdb->get_col( 
        //     $wpdb->prepare( 
        //         "SELECT DISTINCT m.meta_value 
        //         FROM {$wpdb->postmeta} m 
        //         INNER JOIN {$wpdb->posts} p 
        //         ON p.ID=m.post_id 
        //         WHERE p.post_type=%s,
        //         AND p.post_status='publish' 
        //         AND m.meta_key='bi_initiatives-events' 
        //         AND m.meta_value > 0", $post_type
        //     ) 
        // );


        $initiative_ids = array();
        // WP_Query arguments
        $args = array(
            'post_type' => array( 'pt_initiatives' ),
            'posts_per_page' => -1,
            'meta_query' => array(
                array(
                    'key' => 'bi_initiatives-events',
                    // 'value' => '',
                    'compare' => 'EXISTS'
                )
            )
        );

        $query = new WP_Query( $args );

        if ( $query->have_posts() ) {
            while ( $query->have_posts() ) {
                $query->the_post();

                $initiative_ids[] = get_the_ID();
            }
        } 
        wp_reset_postdata();

        array_filter( $initiative_ids );
        if ( empty( $initiative_ids ) ) {
            return array();
        }

        /**
         * Filter Total Initiatives in Filter Bar
         * Use this with caution, this will load initiatives on the front-end, may be slow
         * The base limit is 200 for safety reasons
         *
         *
         * @parm int  200 posts per page limit
         * @parm array $initiative_ids   ids of initiatives attached to events
         */
        $limit = apply_filters( 'tribe_events_filter_bar_pt_initiatives_limit', 200, $initiative_ids );

        $initiatives = get_posts( array(
            'post_type' => 'pt_initiatives',
            'posts_per_page' => $limit,
            'suppress_filters' => false,
            'post__in' => $initiative_ids,
            'post_status' => 'publish',
            'orderby' => 'title',
            'order' => 'ASC',
        ) );

        $initiatives_array = array();
        foreach ( $initiatives as $initiative => $value ) {
            $initiatives_array[] = array(
                'name' => $value->post_title,
                'value' => $value->ID,
            );
        }
        return $initiatives_array;
    }

    protected function setup_join_clause() {
        add_filter( 'posts_join', array( 'Tribe__Events__Query', 'posts_join' ), 10, 2 );
        global $wpdb;

        $this->joinClause .= " LEFT JOIN {$wpdb->postmeta} AS initiatives_filter ON ({$wpdb->posts}.ID = initiatives_filter.post_id AND initiatives_filter.meta_key = 'bi_initiatives-events')";
    }

    protected function setup_where_clause() {
        if ( is_array( $this->currentValue ) ) {
            $initiative_ids = implode( ',', array_map( 'intval', $this->currentValue ) );
        } else {
            $initiative_ids = esc_attr( $this->currentValue );
        }

        $this->whereClause = " AND initiatives_filter.meta_value IN ($initiative_ids) ";

    }
}
new Tribe__Events__Filterbar__Filters__Initiative( __( 'Initiatives', 'tribe-events-filter-view' ), 'initiatives_filter' );

0 个答案:

没有答案