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<?php |
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|
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/** |
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* Return an error to the client, and trigger the WordPress error page |
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*/ |
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class Error_Action extends Red_Action { |
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/** |
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* Set WordPress to show the error page |
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* |
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* @return void |
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*/ |
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public function run() { |
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wp_reset_query(); |
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|
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// Set the query to be a 404 |
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set_query_var( 'is_404', true ); |
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|
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// Return the 404 page |
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add_filter( 'template_include', [ $this, 'template_include' ] ); |
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|
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// Clear any posts if this is actually a valid URL |
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add_filter( 'pre_handle_404', [ $this, 'pre_handle_404' ] ); |
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|
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// Ensure the appropriate http code is returned |
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add_action( 'wp', [ $this, 'wp' ] ); |
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} |
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|
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/** |
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* Output selected HTTP code, as well as redirection header |
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* |
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* @return void |
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*/ |
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public function wp() { |
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status_header( $this->code ); |
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nocache_headers(); |
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|
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global $wp_version; |
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|
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if ( version_compare( $wp_version, '5.1', '<' ) ) { |
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header( 'X-Redirect-Agent: redirection' ); |
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} else { |
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header( 'X-Redirect-By: redirection' ); |
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} |
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} |
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|
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public function pre_handle_404() { |
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global $wp_query; |
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|
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// Page comments plugin interferes with this |
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$wp_query->posts = []; |
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return false; |
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} |
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|
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public function template_include() { |
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$template = get_404_template(); |
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|
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if ( ! is_string( $template ) || $template === '' ) { |
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$template = get_index_template(); |
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} |
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|
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return $template; |
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} |
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|
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public function name() { |
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return __( 'Error (404)', 'redirection' ); |
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} |
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} |
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