| 1 |
<?php |
| 2 |
/** |
| 3 |
* Block template loader functions. |
| 4 |
* |
| 5 |
* @package gutenberg |
| 6 |
*/ |
| 7 |
|
| 8 |
/** |
| 9 |
* Return a list of all overrideable default template types. |
| 10 |
* |
| 11 |
* @see get_query_template |
| 12 |
* |
| 13 |
* @return string[] List of all overrideable default template types. |
| 14 |
*/ |
| 15 |
function get_template_types() { |
| 16 |
return array( |
| 17 |
'index', |
| 18 |
'404', |
| 19 |
'archive', |
| 20 |
'author', |
| 21 |
'category', |
| 22 |
'tag', |
| 23 |
'taxonomy', |
| 24 |
'date', |
| 25 |
'embed', |
| 26 |
'home', |
| 27 |
'front-page', |
| 28 |
'privacy-policy', |
| 29 |
'page', |
| 30 |
'search', |
| 31 |
'single', |
| 32 |
'singular', |
| 33 |
'attachment', |
| 34 |
); |
| 35 |
} |
| 36 |
|
| 37 |
/** |
| 38 |
* Adds necessary filters to use 'wp_template' posts instead of theme template files. |
| 39 |
*/ |
| 40 |
function gutenberg_add_template_loader_filters() { |
| 41 |
if ( ! post_type_exists( 'wp_template' ) ) { |
| 42 |
return; |
| 43 |
} |
| 44 |
|
| 45 |
foreach ( get_template_types() as $template_type ) { |
| 46 |
if ( 'embed' === $template_type ) { // Skip 'embed' for now because it is not a regular template type. |
| 47 |
continue; |
| 48 |
} |
| 49 |
add_filter( str_replace( '-', '', $template_type ) . '_template', 'gutenberg_override_query_template', 20, 3 ); |
| 50 |
} |
| 51 |
} |
| 52 |
add_action( 'wp_loaded', 'gutenberg_add_template_loader_filters' ); |
| 53 |
|
| 54 |
/** |
| 55 |
* Get the template hierarchy for a given template type. |
| 56 |
* |
| 57 |
* Internally, this filters into the "{$type}_template_hierarchy" hook to record the type-specific template hierarchy. |
| 58 |
* |
| 59 |
* @param string $template_type A template type. |
| 60 |
* @return string[] A list of template candidates, in descending order of priority. |
| 61 |
*/ |
| 62 |
function get_template_hierachy( $template_type ) { |
| 63 |
if ( ! in_array( $template_type, get_template_types(), true ) ) { |
| 64 |
return array(); |
| 65 |
} |
| 66 |
|
| 67 |
$get_template_function = 'get_' . str_replace( '-', '_', $template_type ) . '_template'; // front-page -> get_front_page_template. |
| 68 |
$template_hierarchy_filter = str_replace( '-', '', $template_type ) . '_template_hierarchy'; // front-page -> frontpage_template_hierarchy. |
| 69 |
|
| 70 |
$result = array(); |
| 71 |
$template_hierarchy_filter_function = function( $templates ) use ( &$result ) { |
| 72 |
$result = $templates; |
| 73 |
return $templates; |
| 74 |
}; |
| 75 |
|
| 76 |
add_filter( $template_hierarchy_filter, $template_hierarchy_filter_function, 20, 1 ); |
| 77 |
call_user_func( $get_template_function ); // This invokes template_hierarchy_filter. |
| 78 |
remove_filter( $template_hierarchy_filter, $template_hierarchy_filter_function, 20 ); |
| 79 |
|
| 80 |
return $result; |
| 81 |
} |
| 82 |
|
| 83 |
/** |
| 84 |
* Filters into the "{$type}_template" hooks to redirect them to the Full Site Editing template canvas. |
| 85 |
* |
| 86 |
* Internally, this communicates the block content that needs to be used by the template canvas through a global variable. |
| 87 |
* |
| 88 |
* @param string $template Path to the template. See locate_template(). |
| 89 |
* @param string $type Sanitized filename without extension. |
| 90 |
* @param array $templates A list of template candidates, in descending order of priority. |
| 91 |
* @return string The path to the Full Site Editing template canvas file. |
| 92 |
*/ |
| 93 |
function gutenberg_override_query_template( $template, $type, array $templates = array() ) { |
| 94 |
global $_wp_current_template_id, $_wp_current_template_content; |
| 95 |
|
| 96 |
$current_template = gutenberg_find_template_post_and_parts( $type, $templates ); |
| 97 |
|
| 98 |
if ( $current_template ) { |
| 99 |
$_wp_current_template_id = $current_template['template_post']->ID; |
| 100 |
$_wp_current_template_content = empty( $current_template['template_post']->post_content ) ? __( 'Empty template.', 'gutenberg' ) : $current_template['template_post']->post_content; |
| 101 |
|
| 102 |
if ( isset( $_GET['_wp-find-template'] ) ) { |
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wp_send_json_success( $current_template['template_post'] ); |
| 104 |
} |
| 105 |
} else { |
| 106 |
if ( 'index' === $type ) { |
| 107 |
if ( isset( $_GET['_wp-find-template'] ) ) { |
| 108 |
wp_send_json_error( array( 'message' => __( 'No matching template found.', 'gutenberg' ) ) ); |
| 109 |
} |
| 110 |
} else { |
| 111 |
return false; // So that the template loader keeps looking for templates. |
| 112 |
} |
| 113 |
} |
| 114 |
|
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// Add hooks for template canvas. |
| 116 |
// Add viewport meta tag. |
| 117 |
add_action( 'wp_head', 'gutenberg_viewport_meta_tag', 0 ); |
| 118 |
|
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// Render title tag with content, regardless of whether theme has title-tag support. |
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remove_action( 'wp_head', '_wp_render_title_tag', 1 ); // Remove conditional title tag rendering... |
| 121 |
add_action( 'wp_head', 'gutenberg_render_title_tag', 1 ); // ...and make it unconditional. |
| 122 |
|
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// This file will be included instead of the theme's template file. |
| 124 |
return gutenberg_dir_path() . 'lib/template-canvas.php'; |
| 125 |
} |
| 126 |
|
| 127 |
/** |
| 128 |
* Recursively traverses a block tree, creating auto drafts |
| 129 |
* for any encountered template parts without a fixed post. |
| 130 |
* |
| 131 |
* @access private |
| 132 |
* |
| 133 |
* @param array $block The root block to start traversing from. |
| 134 |
* @return int[] A list of template parts IDs for the given block. |
| 135 |
*/ |
| 136 |
function create_auto_draft_for_template_part_block( $block ) { |
| 137 |
$template_part_ids = array(); |
| 138 |
|
| 139 |
if ( 'core/template-part' === $block['blockName'] ) { |
| 140 |
if ( isset( $block['attrs']['postId'] ) ) { |
| 141 |
// Template part is customized. |
| 142 |
$template_part_id = $block['attrs']['postId']; |
| 143 |
} else { |
| 144 |
// A published post might already exist if this template part |
| 145 |
// was customized elsewhere or if it's part of a customized |
| 146 |
// template. We also check if an auto-draft was already created |
| 147 |
// because preloading can make this run twice, so, different code |
| 148 |
// paths can end up with different posts for the same template part. |
| 149 |
// E.g. The server could send back post ID 1 to the client, preload, |
| 150 |
// and create another auto-draft. So, if the client tries to resolve the |
| 151 |
// post ID from the slug and theme, it won't match with what the server sent. |
| 152 |
$template_part_query = new WP_Query( |
| 153 |
array( |
| 154 |
'post_type' => 'wp_template_part', |
| 155 |
'post_status' => array( 'publish', 'auto-draft' ), |
| 156 |
'name' => $block['attrs']['slug'], |
| 157 |
'meta_key' => 'theme', |
| 158 |
'meta_value' => $block['attrs']['theme'], |
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'posts_per_page' => 1, |
| 160 |
'no_found_rows' => true, |
| 161 |
) |
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); |
| 163 |
$template_part_post = $template_part_query->have_posts() ? $template_part_query->next_post() : null; |
| 164 |
if ( $template_part_post ) { |
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$template_part_id = $template_part_post->ID; |
| 166 |
} else { |
| 167 |
// Template part is not customized, get it from a file and make an auto-draft for it. |
| 168 |
$template_part_file_path = |
| 169 |
get_stylesheet_directory() . '/block-template-parts/' . $block['attrs']['slug'] . '.html'; |
| 170 |
if ( ! file_exists( $template_part_file_path ) ) { |
| 171 |
if ( gutenberg_is_experiment_enabled( 'gutenberg-full-site-editing-demo' ) ) { |
| 172 |
$template_part_file_path = |
| 173 |
dirname( __FILE__ ) . '/demo-block-template-parts/' . $block['attrs']['slug'] . '.html'; |
| 174 |
if ( ! file_exists( $template_part_file_path ) ) { |
| 175 |
return; |
| 176 |
} |
| 177 |
} else { |
| 178 |
return; |
| 179 |
} |
| 180 |
} |
| 181 |
$template_part_id = wp_insert_post( |
| 182 |
array( |
| 183 |
'post_content' => file_get_contents( $template_part_file_path ), |
| 184 |
'post_title' => $block['attrs']['slug'], |
| 185 |
'post_status' => 'auto-draft', |
| 186 |
'post_type' => 'wp_template_part', |
| 187 |
'post_name' => $block['attrs']['slug'], |
| 188 |
'meta_input' => array( |
| 189 |
'theme' => $block['attrs']['theme'], |
| 190 |
), |
| 191 |
) |
| 192 |
); |
| 193 |
} |
| 194 |
} |
| 195 |
$template_part_ids[ $block['attrs']['slug'] ] = $template_part_id; |
| 196 |
} |
| 197 |
|
| 198 |
foreach ( $block['innerBlocks'] as $inner_block ) { |
| 199 |
$template_part_ids = array_merge( $template_part_ids, create_auto_draft_for_template_part_block( $inner_block ) ); |
| 200 |
} |
| 201 |
return $template_part_ids; |
| 202 |
} |
| 203 |
|
| 204 |
/** |
| 205 |
* Return the correct 'wp_template' post and template part IDs for the current template. |
| 206 |
* |
| 207 |
* Accepts an optional $template_hierarchy argument as a hint. |
| 208 |
* |
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* @param string $template_type The current template type. |
| 210 |
* @param string[] $template_hierarchy (optional) The current template hierarchy, ordered by priority. |
| 211 |
* @return null|array { |
| 212 |
* @type WP_Post|null template_post A template post object, or null if none could be found. |
| 213 |
* @type int[] A list of template parts IDs for the template. |
| 214 |
* } |
| 215 |
*/ |
| 216 |
function gutenberg_find_template_post_and_parts( $template_type, $template_hierarchy = array() ) { |
| 217 |
if ( ! $template_type ) { |
| 218 |
return null; |
| 219 |
} |
| 220 |
|
| 221 |
if ( empty( $template_hierarchy ) ) { |
| 222 |
if ( 'index' === $template_type ) { |
| 223 |
$template_hierarchy = get_template_hierachy( 'index' ); |
| 224 |
} else { |
| 225 |
$template_hierarchy = array_merge( get_template_hierachy( $template_type ), get_template_hierachy( 'index' ) ); |
| 226 |
} |
| 227 |
} |
| 228 |
|
| 229 |
$slugs = array_map( |
| 230 |
'gutenberg_strip_php_suffix', |
| 231 |
$template_hierarchy |
| 232 |
); |
| 233 |
|
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// Find most specific 'wp_template' post matching the hierarchy. |
| 235 |
$template_query = new WP_Query( |
| 236 |
array( |
| 237 |
'post_type' => 'wp_template', |
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'post_status' => 'publish', |
| 239 |
'post_name__in' => $slugs, |
| 240 |
'orderby' => 'post_name__in', |
| 241 |
'posts_per_page' => 1, |
| 242 |
'no_found_rows' => true, |
| 243 |
) |
| 244 |
); |
| 245 |
|
| 246 |
$current_template_post = $template_query->have_posts() ? $template_query->next_post() : null; |
| 247 |
|
| 248 |
// Build map of template slugs to their priority in the current hierarchy. |
| 249 |
$slug_priorities = array_flip( $slugs ); |
| 250 |
|
| 251 |
// See if there is a theme block template with higher priority than the resolved template post. |
| 252 |
$higher_priority_block_template_path = null; |
| 253 |
$higher_priority_block_template_priority = PHP_INT_MAX; |
| 254 |
$block_template_files = glob( get_stylesheet_directory() . '/block-templates/*.html' ); |
| 255 |
$block_template_files = is_array( $block_template_files ) ? $block_template_files : array(); |
| 256 |
if ( is_child_theme() ) { |
| 257 |
$child_block_template_files = glob( get_template_directory() . '/block-templates/*.html' ); |
| 258 |
$child_block_template_files = is_array( $child_block_template_files ) ? $child_block_template_files : array(); |
| 259 |
$block_template_files = array_merge( $block_template_files, $child_block_template_files ); |
| 260 |
} |
| 261 |
if ( gutenberg_is_experiment_enabled( 'gutenberg-full-site-editing-demo' ) ) { |
| 262 |
$demo_block_template_files = glob( dirname( __FILE__ ) . '/demo-block-templates/*.html' ); |
| 263 |
$demo_block_template_files = is_array( $demo_block_template_files ) ? $demo_block_template_files : array(); |
| 264 |
$block_template_files = array_merge( $block_template_files, $demo_block_template_files ); |
| 265 |
} |
| 266 |
foreach ( $block_template_files as $path ) { |
| 267 |
if ( ! isset( $slug_priorities[ basename( $path, '.html' ) ] ) ) { |
| 268 |
continue; |
| 269 |
} |
| 270 |
$theme_block_template_priority = $slug_priorities[ basename( $path, '.html' ) ]; |
| 271 |
if ( |
| 272 |
$theme_block_template_priority < $higher_priority_block_template_priority && |
| 273 |
( empty( $current_template_post ) || $theme_block_template_priority < $slug_priorities[ $current_template_post->post_name ] ) |
| 274 |
) { |
| 275 |
$higher_priority_block_template_path = $path; |
| 276 |
$higher_priority_block_template_priority = $theme_block_template_priority; |
| 277 |
} |
| 278 |
} |
| 279 |
|
| 280 |
// If there is, use it instead. |
| 281 |
if ( isset( $higher_priority_block_template_path ) ) { |
| 282 |
$post_name = basename( $higher_priority_block_template_path, '.html' ); |
| 283 |
$file_contents = file_get_contents( $higher_priority_block_template_path ); |
| 284 |
$current_template_post = array( |
| 285 |
'post_content' => $file_contents, |
| 286 |
'post_title' => $post_name, |
| 287 |
'post_status' => 'auto-draft', |
| 288 |
'post_type' => 'wp_template', |
| 289 |
'post_name' => $post_name, |
| 290 |
); |
| 291 |
if ( is_admin() || defined( 'REST_REQUEST' ) ) { |
| 292 |
$template_query = new WP_Query( |
| 293 |
array( |
| 294 |
'post_type' => 'wp_template', |
| 295 |
'post_status' => 'auto-draft', |
| 296 |
'name' => $post_name, |
| 297 |
'posts_per_page' => 1, |
| 298 |
'no_found_rows' => true, |
| 299 |
) |
| 300 |
); |
| 301 |
$current_template_post = $template_query->have_posts() ? $template_query->next_post() : $current_template_post; |
| 302 |
|
| 303 |
// Only create auto-draft of block template for editing |
| 304 |
// in admin screens, when necessary, because the underlying |
| 305 |
// file has changed. |
| 306 |
if ( is_array( $current_template_post ) || $current_template_post->post_content !== $file_contents ) { |
| 307 |
if ( ! is_array( $current_template_post ) ) { |
| 308 |
$current_template_post->post_content = $file_contents; |
| 309 |
} |
| 310 |
$current_template_post = get_post( |
| 311 |
wp_insert_post( $current_template_post ) |
| 312 |
); |
| 313 |
} |
| 314 |
} else { |
| 315 |
$current_template_post = new WP_Post( |
| 316 |
(object) $current_template_post |
| 317 |
); |
| 318 |
} |
| 319 |
} |
| 320 |
|
| 321 |
// If we haven't found any template post by here, it means that this theme doesn't even come with a fallback |
| 322 |
// `index.html` block template. We create one so that people that are trying to access the editor are greeted |
| 323 |
// with a blank page rather than an error. |
| 324 |
if ( ! $current_template_post && ( is_admin() || defined( 'REST_REQUEST' ) ) ) { |
| 325 |
$current_template_post = array( |
| 326 |
'post_title' => 'index', |
| 327 |
'post_status' => 'auto-draft', |
| 328 |
'post_type' => 'wp_template', |
| 329 |
'post_name' => 'index', |
| 330 |
); |
| 331 |
$current_template_post = get_post( |
| 332 |
wp_insert_post( $current_template_post ) |
| 333 |
); |
| 334 |
} |
| 335 |
|
| 336 |
if ( $current_template_post ) { |
| 337 |
$template_part_ids = array(); |
| 338 |
if ( is_admin() ) { |
| 339 |
foreach ( parse_blocks( $current_template_post->post_content ) as $block ) { |
| 340 |
$template_part_ids = array_merge( $template_part_ids, create_auto_draft_for_template_part_block( $block ) ); |
| 341 |
} |
| 342 |
} |
| 343 |
return array( |
| 344 |
'template_post' => $current_template_post, |
| 345 |
'template_part_ids' => $template_part_ids, |
| 346 |
); |
| 347 |
} |
| 348 |
return null; |
| 349 |
} |
| 350 |
|
| 351 |
/** |
| 352 |
* Displays title tag with content, regardless of whether theme has title-tag support. |
| 353 |
* |
| 354 |
* @see _wp_render_title_tag() |
| 355 |
*/ |
| 356 |
function gutenberg_render_title_tag() { |
| 357 |
echo '<title>' . wp_get_document_title() . '</title>' . "\n"; |
| 358 |
} |
| 359 |
|
| 360 |
/** |
| 361 |
* Renders the markup for the current template. |
| 362 |
*/ |
| 363 |
function gutenberg_render_the_template() { |
| 364 |
global $_wp_current_template_content; |
| 365 |
global $wp_embed; |
| 366 |
|
| 367 |
if ( ! $_wp_current_template_content ) { |
| 368 |
echo '<h1>' . esc_html__( 'No matching template found', 'gutenberg' ) . '</h1>'; |
| 369 |
return; |
| 370 |
} |
| 371 |
|
| 372 |
$content = $wp_embed->run_shortcode( $_wp_current_template_content ); |
| 373 |
$content = $wp_embed->autoembed( $content ); |
| 374 |
$content = do_blocks( $content ); |
| 375 |
$content = wptexturize( $content ); |
| 376 |
if ( function_exists( 'wp_filter_content_tags' ) ) { |
| 377 |
$content = wp_filter_content_tags( $content ); |
| 378 |
} else { |
| 379 |
$content = wp_make_content_images_responsive( $content ); |
| 380 |
} |
| 381 |
$content = str_replace( ']]>', ']]>', $content ); |
| 382 |
|
| 383 |
// Wrap block template in .wp-site-blocks to allow for specific descendant styles |
| 384 |
// (e.g. `.wp-site-blocks > *`). |
| 385 |
echo '<div class="wp-site-blocks">'; |
| 386 |
echo $content; // phpcs:ignore WordPress.Security.EscapeOutput |
| 387 |
echo '</div>'; |
| 388 |
} |
| 389 |
|
| 390 |
/** |
| 391 |
* Renders a 'viewport' meta tag. |
| 392 |
* |
| 393 |
* This is hooked into {@see 'wp_head'} to decouple its output from the default template canvas. |
| 394 |
*/ |
| 395 |
function gutenberg_viewport_meta_tag() { |
| 396 |
echo '<meta name="viewport" content="width=device-width, initial-scale=1" />' . "\n"; |
| 397 |
} |
| 398 |
|
| 399 |
/** |
| 400 |
* Strips .php suffix from template file names. |
| 401 |
* |
| 402 |
* @access private |
| 403 |
* |
| 404 |
* @param string $template_file Template file name. |
| 405 |
* @return string Template file name without extension. |
| 406 |
*/ |
| 407 |
function gutenberg_strip_php_suffix( $template_file ) { |
| 408 |
return preg_replace( '/\.php$/', '', $template_file ); |
| 409 |
} |
| 410 |
|
| 411 |
/** |
| 412 |
* Extends default editor settings to enable template and template part editing. |
| 413 |
* |
| 414 |
* @param array $settings Default editor settings. |
| 415 |
* |
| 416 |
* @return array Filtered editor settings. |
| 417 |
*/ |
| 418 |
function gutenberg_template_loader_filter_block_editor_settings( $settings ) { |
| 419 |
global $post, $_wp_current_template_id; |
| 420 |
|
| 421 |
if ( ! $post || ! post_type_exists( 'wp_template' ) || ! post_type_exists( 'wp_template_part' ) ) { |
| 422 |
return $settings; |
| 423 |
} |
| 424 |
|
| 425 |
// Create template part auto-drafts for the edited post. |
| 426 |
$post = isset( $_wp_current_template_id ) |
| 427 |
? get_post( $_wp_current_template_id ) // It's a template. |
| 428 |
: get_post(); // It's a post. |
| 429 |
foreach ( parse_blocks( $post->post_content ) as $block ) { |
| 430 |
create_auto_draft_for_template_part_block( $block ); |
| 431 |
} |
| 432 |
|
| 433 |
// TODO: Set editing mode and current template ID for editing modes support. |
| 434 |
return $settings; |
| 435 |
} |
| 436 |
add_filter( 'block_editor_settings', 'gutenberg_template_loader_filter_block_editor_settings' ); |
| 437 |
|
| 438 |
/** |
| 439 |
* Removes post details from block context when rendering a block template. |
| 440 |
* |
| 441 |
* @param array $context Default context. |
| 442 |
* |
| 443 |
* @return array Filtered context. |
| 444 |
*/ |
| 445 |
function gutenberg_template_render_without_post_block_context( $context ) { |
| 446 |
/* |
| 447 |
* When loading a template or template part directly and not through a page |
| 448 |
* that resolves it, the top-level post ID and type context get set to that |
| 449 |
* of the template part. Templates are just the structure of a site, and |
| 450 |
* they should not be available as post context because blocks like Post |
| 451 |
* Content would recurse infinitely. |
| 452 |
*/ |
| 453 |
if ( isset( $context['postType'] ) && |
| 454 |
( 'wp_template' === $context['postType'] || 'wp_template_part' === $context['postType'] ) ) { |
| 455 |
unset( $context['postId'] ); |
| 456 |
unset( $context['postType'] ); |
| 457 |
} |
| 458 |
|
| 459 |
return $context; |
| 460 |
} |
| 461 |
add_filter( 'render_block_context', 'gutenberg_template_render_without_post_block_context' ); |
| 462 |
|
