I\'ve defined a PHP callback function to handle the communication between server-side and client-side:

function json_render_modal_body() {

    check_ajax_referer( THEME_PREFIX . \'-modals\', \'nonce\' );

    $response = array( \'text\' => \'no\' );
    $modal_id = null;

    if ( isset( $_GET[\'modal_id\'] ) && ! $modal_id = filter_var( $_GET[\'modal_id\'], FILTER_SANITIZE_STRING ) ) {
        wp_send_json_error( $response );
    }

    if ( ! $form = render_form( $modal_id ) ) {
        wp_send_json_error( $response );
    }

    $response[\'text\'] = \'yes\';

    wp_send_json_success( $response );

}

I\'ve told WordPress about this function, to handle the communication process:

add_action( \'wp_ajax_json_render_modal_body\', __NAMESPACE__ . \'\\json_render_modal_body\' );
add_action( \'wp_ajax_nopriv_json_render_modal_body\', __NAMESPACE__ . \'\\json_render_modal_body\' );

我已经注册/排队/本地化了JS脚本来处理AJAX请求。

This is what I\'ve localized:

wp_localize_script(
    THEME_PREFIX . \'-modals\',
    \'mbe_theme_modal\',
    array(
        \'ajax_url\' => admin_url( \'admin-ajax.php\' ),
        \'nonce\' => wp_create_nonce( THEME_PREFIX . \'-modals\' )
    )
);

This is what my JS script looks like:

var modal_id = jQuery( e.relatedTarget ).attr( "data-target" ).replace( "#", "" );

jQuery.get(
    mbe_theme_modal.ajax_url,
    {
        action: "json_render_modal_body",
        modal_id: modal_id,
        nonce: mbe_theme_modal.nonce
    },
    function ( data ) {

        console.log( data );

    },
    \'json\'
);

你知道我为什么一直0 在我的AJAX响应中？

我还尝试从代码中删除nonce内容，并访问直接URL(domain.com/wp-admin/admin-ajax.php?action=json_render_modal_body&modal_id=some-modal-id, 然而，我仍然继续得到0.

我甚至尝试过用简单的文本响应来保持PHP函数的超级简单，但仍然得到了0.