Wordpress修改元查询

时间:2018-05-14 07:27:55

标签: wordpress wordpress-theming

我在functions.php中使用以下代码进行循环:

$meta_query[] = array(
                'key'       => '$key',
                'value'     => $value,
                'compare'   => 'IN',
            );  

我尝试在循环后添加下一个$ meta_query,但使用"<"相比之下。当我添加' IN'它正在工作,但当我改为'> ="或">"它没有用。

  $meta_query[] = array(
                'key'       => 'price',
                'value'     => $value,
                'compare'   => '>=',
            );

你知道为什么吗?

这是我的完整代码:

// array of filters (field key => field name)
    $GLOBALS['my_query_filters'] = array( 
        'field_1'   => 'type', 
        'field_2'   => 'price',
        'field_3'   => 'type2',
        'field_4'   => 'city',
        'field_5'   => 'price_min',
        'field_6'   => 'price_max',
    );
    function my_pre_get_posts( $query ) {
        global $post;
        global $wpdb;
        $parametry = get_field_objects($post->ID);
        if(!is_single() && $post->ID != 2 && $query->get( 'cat' )){
            /* start filter*/
            $meta_query = $query->get('meta_query');
            foreach( $GLOBALS['my_query_filters'] as $key => $name ) {
                // continue if not found in url
                if( empty($_GET[ $name ]) ) {
                    continue;
                }

                // get the value for this filter
                // eg: http://www.website.com/events?city=melbourne,sydney
                $value = explode(',', $_GET[ $name ]);
                // append meta query

                if($name == 'price_min'){
                    $meta_query[] = array(
                        'key'       => 'price',
                        'value'     => $value,
                        'compare'   => '>=',
                    );  
                }
                elseif($name == 'price_max'){
                    $meta_query[] = array(
                        'key'       => 'price',
                        'value'     => $value,
                        'compare'   => '<=',
                    );  
                }
                else{
                    $meta_query[] = array(
                        'key'       => $name,
                        'value'     => $value,
                        'compare'   => 'IN',
                    );  
                }


            } 
            // update meta query
            $query->set('meta_query', $meta_query); 

在URL(和表wp_postmeta)中我有:type,type2,price和city。我没有price_min和price_max所以我想在价格领域进行操作。

这是我过滤后的工作数组:

Array ( [0] => Array ( [key] => type [value] => Array ( [0] => flat) [compare] => IN ) [1] => Array ( [key] => city[value] => Array ( [0] => Cracow) [compare] => IN ) )

当我添加price_min和price_max时,这不是工作数组:

Array ( [0] => Array ( [key] => type [value] => Array ( [0] => flat) [compare] => IN ) [1] => Array ( [key] => city [value] => Array ( [0] => Cracow) [compare] => IN ) [2] => Array ( [key] => price [value] => Array ( [0] => 50000 ) [compare] => >= ) [3] => Array ( [key] => price [value] => Array ( [0] => 300000 ) [compare] => <= ) )

1 个答案:

答案 0 :(得分:1)

$value可能不是一个整数,因此当它是一个字符串时,试图将它的值作为整数进行比较会导致一些问题。在WP_Query参数之前,请将此代码放在您的文件中:

$value = (int) $value;

在PHP中查看type juggling以获取更多信息。

这是WP_Query meta comparisons的文档。