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<?php |
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namespace Rarst\Meadow; |
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/** |
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* Augment native template hierarchy with non-PHP template processing. |
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* |
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* @deprecated 0.2:1.0 Deprecated in favor of better hierarchy filter in WP 4.7+. |
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*/ |
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class Template_Hierarchy { |
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/** @var string[] $template_types Template type names to be used for dynamic hooks. */ |
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public $template_types = array( |
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'embed', |
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'404', |
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'search', |
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'taxonomy', |
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'frontpage', |
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'home', |
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'attachment', |
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'single', |
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'page', |
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'singular', |
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'category', |
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'tag', |
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'author', |
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'date', |
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'archive', |
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'commentspopup', |
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'paged', |
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'index', |
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); |
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protected $mime_type; |
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public function enable() { |
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add_action( 'template_redirect', array( $this, 'template_redirect' ) ); |
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foreach ( $this->template_types as $type ) { |
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add_filter( "{$type}_template", array( $this, 'query_template' ) ); |
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} |
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} |
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public function disable() { |
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remove_action( 'template_redirect', array( $this, 'template_redirect' ) ); |
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foreach ( $this->template_types as $type ) { |
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remove_filter( "{$type}_template", array( $this, 'query_template' ) ); |
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} |
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if ( ! empty($this->mime_type) ) { |
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remove_filter( "{$this->mime_type[0]}_template", array( $this, 'query_template' ) ); |
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remove_filter( "{$this->mime_type[1]}_template", array( $this, 'query_template' ) ); |
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remove_filter( "{$this->mime_type[0]}{$this->mime_type[1]}_template", array( $this, 'query_template' ) ); |
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} |
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} |
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public function template_redirect() { |
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if ( is_attachment() ) { |
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global $posts; |
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if ( ! empty( $posts ) && isset( $posts[0]->post_mime_type ) ) { |
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$this->mime_type = explode( '/', $posts[0]->post_mime_type ); |
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} |
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add_filter( "{$this->mime_type[0]}_template", array( $this, 'query_template' ) ); |
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add_filter( "{$this->mime_type[1]}_template", array( $this, 'query_template' ) ); |
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add_filter( "{$this->mime_type[0]}{$this->mime_type[1]}_template", array( $this, 'query_template' ) ); |
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} |
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} |
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/** |
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* @param string $fallback |
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* |
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* @return string |
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*/ |
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public function query_template( $fallback ) { |
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$type = substr( current_filter(), 0, - 9 ); // trim '_template' from end |
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$templates = array(); |
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switch ( $type ) { |
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case 'embed': |
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$object = get_queried_object(); |
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if ( ! empty( $object->post_type ) ) { |
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$post_format = get_post_format( $object ); |
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if ( $post_format ) { |
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$templates[] = "embed-{$object->post_type}-{$post_format}.twig"; |
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} |
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$templates[] = "embed-{$object->post_type}.twig"; |
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} |
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$templates[] = 'embed.twig'; |
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break; |
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case 'taxonomy': |
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$term = get_queried_object(); |
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if ( $term ) { |
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$taxonomy = $term->taxonomy; |
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$templates[] = "taxonomy-{$taxonomy}-{$term->slug}.twig"; |
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$templates[] = "taxonomy-{$taxonomy}.twig"; |
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} |
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$templates[] = 'taxonomy.twig'; |
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break; |
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case 'frontpage': |
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$templates = array( 'front-page.twig' ); |
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break; |
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case 'home': |
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$templates = array( 'home.twig', 'index.twig' ); |
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break; |
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case 'single': |
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$object = get_queried_object(); |
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if ( $object ) { |
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$templates[] = "single-{$object->post_type}.twig"; |
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} |
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$templates[] = 'single.twig'; |
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break; |
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case 'page': |
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$page_id = get_queried_object_id(); |
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// $template = get_page_template_slug(); |
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$pagename = get_query_var( 'pagename' ); |
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if ( ! $pagename && $page_id ) { |
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// If a static page is set as the front page, $pagename will not be set. Retrieve it from the queried object |
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$post = get_queried_object(); |
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$pagename = $post->post_name; |
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} |
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// TODO page templates |
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// if ( $template && 0 === validate_file( $template ) ) |
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// $templates[] = $template; |
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if ( $pagename ) { |
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$templates[] = "page-{$pagename}.twig"; |
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} |
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if ( $page_id ) { |
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$templates[] = "page-{$page_id}.twig"; |
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} |
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$templates[] = 'page.twig'; |
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break; |
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case 'category': |
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case 'tag': |
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$term = get_queried_object(); |
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if ( $term ) { |
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$templates[] = "{$type}-{$term->slug}.twig"; |
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$templates[] = "{$type}-{$term->term_id}.twig"; |
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} |
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$templates[] = "{$type}.twig"; |
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break; |
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case 'author': |
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$author = get_queried_object(); |
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if ( $author ) { |
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$templates[] = "author-{$author->user_nicename}.twig"; |
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$templates[] = "author-{$author->ID}.twig"; |
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} |
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$templates[] = 'author.twig'; |
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break; |
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case 'archive': |
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$post_types = array_filter( (array) get_query_var( 'post_type' ) ); |
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if ( \count( $post_types ) === 1 ) { |
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$post_type = reset( $post_types ); |
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$templates[] = "archive-{$post_type}.twig"; |
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} |
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$templates[] = 'archive.twig'; |
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break; |
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default: |
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$templates = array( "{$type}.twig" ); |
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} |
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$template = $this->locate_template( $templates ); |
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if ( empty( $template ) ) { |
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$template = $fallback; |
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} |
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return apply_filters( 'meadow_query_template', $template, $type ); |
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} |
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/** |
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* Broken out for easier inheritance to customize lookup logic. |
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* |
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* @param array|string $templates |
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* |
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* @return string |
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*/ |
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public function locate_template( $templates ) { |
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return locate_template( $templates ); |
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} |
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} |
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Instead of relying on
global
state, we recommend one of these alternatives:1. Pass all data via parameters
2. Create a class that maintains your state