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<?php |
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/** |
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* Server side implementation of load more handling. |
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* |
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* @package categoryposts. |
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* |
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* @since 4.9 |
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*/ |
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|
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namespace categoryPosts; |
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|
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// Don't call the file directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* Embed the front end JS for load more. |
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* |
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* @since 4.9 |
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*/ |
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function embed_loadmore_scripts() { |
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echo '<script>{'; |
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$suffix = 'min.js'; |
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if ( defined( 'WP_DEBUG' ) && WP_DEBUG === true ) { |
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$suffix = 'js'; |
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} |
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echo 'var tiptoppress = Array();'; |
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echo 'tiptoppress["' . esc_js( __NAMESPACE__ ) . '"] = { json_root_url : "' . esc_js( rest_url( __NAMESPACE__ . '/loadmore' ) ) . '"};'; |
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include __DIR__ . '/js/frontend/loadmore.' . $suffix; |
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echo '}</script>'; |
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} |
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|
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/** |
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* Normalize a block load-more ID so stored block settings can be resolved |
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* consistently for both the prefixed and unprefixed form. |
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* |
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* @param string $id The load-more identifier. |
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* |
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* @return string The normalized block ID. |
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*/ |
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function normalize_block_loadmore_id( $id ) { |
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if ( empty( $id ) ) { |
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return ''; |
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} |
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|
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return 0 === strpos( $id, 'block-' ) ? $id : 'block-' . $id; |
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} |
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|
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/** |
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* Generate the JSON response which includes additional element as a response |
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* to a "load more" request. |
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* |
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* @param \WP_REST_Request $request The rest request with widget aand start point info. |
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*/ |
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function get_next_elements( \WP_REST_Request $request ) { |
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$id = (string) $request['id']; |
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$start = (int) $request['start']; |
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$number = (int) $request['number']; |
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$context = (string) $request['context']; |
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|
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$ret = array(); |
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|
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$id_components = explode( '-', $id ); |
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if ( 2 <= count( $id_components ) ) { |
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switch ( $id_components[0] ) { |
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case 'shortcode': |
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if ( 2 === count( $id_components ) || 3 === count( $id_components ) ) { |
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$pid = $id_components[1]; // The ID of the relevant post. |
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$name = isset( $id_components[2] ) ? $id_components[2] : ''; // The shortcode "name". |
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$settings = shortcode_settings( $pid, $name ); |
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if ( ! empty( $settings ) ) { |
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$settings['context'] = CONTEXT_SHORTCODE; |
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$virtual_widget = new Virtual_Widget( '', '', $settings ); |
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$ret = $virtual_widget->get_elements_HTML( $start, $number, $context ); |
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} |
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} |
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break; |
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case 'widget': |
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if ( 2 === count( $id_components ) ) { |
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$id = $id_components[1]; // The ID of the widget. |
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$class = __NAMESPACE__ . '\Widget'; |
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$widgetclass = new $class(); |
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$allsettings = $widgetclass->get_settings(); |
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if ( isset( $allsettings[ $id ] ) ) { |
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$allsettings[ $id ]['context'] = CONTEXT_WIDGET; |
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$virtual_widget = new Virtual_Widget( '', '', $allsettings[ $id ] ); |
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$ret = $virtual_widget->get_elements_HTML( $start, $number, $context ); |
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} |
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} |
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break; |
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case 'block': |
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if ( 2 === count( $id_components ) ) { |
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$block_id = normalize_block_loadmore_id( $id_components[1] ); |
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$settings = get_block_loadmore_settings( $block_id ); |
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if ( false !== $settings ) { |
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$instance = build_block_instance( $settings ); |
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$widget = new Widget(); |
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$ret = $widget->get_elements_HTML( $instance, $context, $start, $number ); |
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} |
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} |
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break; |
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} |
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} |
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|
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return new \WP_REST_Response( $ret ); |
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} |
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|
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/** |
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* This function is where we register our routes for our example endpoint. |
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*/ |
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function register_route() { |
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register_rest_route( |
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__NAMESPACE__, |
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'/loadmore/(?P<id>[\w-]+)/(?P<start>[\d]+)/(?P<number>[\d]+)/(?P<context>[\w]+)', |
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array( |
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'methods' => 'GET', |
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'callback' => __NAMESPACE__ . '\get_next_elements', |
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'permission_callback' => '__return_true', |
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) |
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); |
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} |
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|
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add_action( 'rest_api_init', __NAMESPACE__ . '\register_route' ); |
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|
