Overrides::add_amp_redirect_headers( string $url )
Summary
AMP Add Redirect Headers
Description
Identify if we are attempting a redirect from an AMP form and if so, add the proper headers to redirect in AMP.
Parameters
- $url
-
(string) (Required) URL to be redirected to.
Source
File: src/BigCommerce/Amp/Overrides.php
public function add_amp_redirect_headers( $url ) {
$amp_source_origin = filter_input( INPUT_GET, '__amp_source_origin', FILTER_SANITIZE_STRING ) ?: false;
if ( $amp_source_origin ) {
// Ensure we have an absolute path for the redirect URL.
$parsed_url = wp_parse_url( $url );
if ( ! isset( $parsed_url['scheme'] ) && ! isset( $parsed_url['host'] ) ) {
if ( '/' === substr( $url, 0, 1 ) ) {
$url = untrailingslashit( get_site_url() ) . $url;
} else {
$url = trailingslashit( get_site_url() ) . $url;
}
}
$url = add_query_arg( 'amp', true, $url );
// Add the AMP headers so the redirect works properly and doesn't throw a console error.
header( 'AMP-Redirect-To: ' . esc_url_raw( $url ) );
header( 'AMP-Access-Control-Allow-Source-Origin: ' . esc_url_raw( $amp_source_origin ) );
header( 'Access-Control-Expose-Headers: AMP-Access-Control-Allow-Source-Origin, AMP-Redirect-To' );
wp_send_json_success();
}
}