Outputs
5 months ago
data
5 months ago
FieldSettings.php
5 months ago
GEO.php
5 months ago
Schema.php
5 months ago
SchemaData.php
5 months ago
Schema.php
701 lines
| 1 | <?php |
| 2 | /** |
| 3 | * @package ACF |
| 4 | * @author WP Engine |
| 5 | * |
| 6 | * © 2026 Advanced Custom Fields (ACF®). All rights reserved. |
| 7 | * "ACF" is a trademark of WP Engine. |
| 8 | * Licensed under the GNU General Public License v2 or later. |
| 9 | * https://www.gnu.org/licenses/gpl-2.0.html |
| 10 | */ |
| 11 | |
| 12 | namespace ACF\AI\GEO; |
| 13 | |
| 14 | /** |
| 15 | * Class Schema |
| 16 | * |
| 17 | * Provides utilities for working with schema.org types and properties |
| 18 | * using pre-generated schema data from SchemaData.php. |
| 19 | */ |
| 20 | class Schema { |
| 21 | |
| 22 | /** |
| 23 | * Primitive types that don't require a "@type" in JSON-LD output |
| 24 | * |
| 25 | * @var array |
| 26 | */ |
| 27 | private static array $primitive_types = array( |
| 28 | 'Text', |
| 29 | 'Number', |
| 30 | 'Integer', |
| 31 | 'Float', |
| 32 | 'Boolean', |
| 33 | 'Date', |
| 34 | 'DateTime', |
| 35 | 'Time', |
| 36 | 'URL', |
| 37 | 'CssSelectorType', |
| 38 | 'PronounceableText', |
| 39 | 'XPathType', |
| 40 | ); |
| 41 | |
| 42 | /** |
| 43 | * Schema.org types that are modeled as objects but are practically text values |
| 44 | * |
| 45 | * These types don't have meaningful sub-properties and are typically |
| 46 | * represented as formatted strings (e.g., "PT30M" for Duration). |
| 47 | * Text fields should be able to match properties expecting these types. |
| 48 | * |
| 49 | * @var array |
| 50 | */ |
| 51 | private static array $text_value_types = array( |
| 52 | 'Duration', |
| 53 | 'Distance', |
| 54 | 'Energy', |
| 55 | 'Mass', |
| 56 | ); |
| 57 | |
| 58 | /** |
| 59 | * Cache for properties grouped by type |
| 60 | * |
| 61 | * @var array|null |
| 62 | */ |
| 63 | private static $properties_by_type_cache = null; |
| 64 | |
| 65 | /** |
| 66 | * Get priority schema types for common use cases |
| 67 | * |
| 68 | * Returns an array of commonly used Schema.org types that should be |
| 69 | * displayed first in selection dropdowns. When a context ID (field group ID) |
| 70 | * is provided, schema types from associated post types and blocks are |
| 71 | * prepended to the list. |
| 72 | * |
| 73 | * @since 6.8.0 |
| 74 | * |
| 75 | * @param integer $context_id Optional field group ID to get context-aware priority types. |
| 76 | * @return array Array of priority type names. |
| 77 | */ |
| 78 | public static function get_priority_types( int $context_id = 0 ): array { |
| 79 | $priority_types = array( |
| 80 | 'Thing', |
| 81 | 'Article', |
| 82 | 'BlogPosting', |
| 83 | 'NewsArticle', |
| 84 | 'Recipe', |
| 85 | 'Product', |
| 86 | 'Event', |
| 87 | 'HowTo', |
| 88 | 'FAQPage', |
| 89 | 'Person', |
| 90 | 'Organization', |
| 91 | 'LocalBusiness', |
| 92 | 'Place', |
| 93 | 'WebPage', |
| 94 | ); |
| 95 | |
| 96 | // Prepend context-specific schema types if a field group context is provided. |
| 97 | if ( $context_id ) { |
| 98 | $context_types = self::get_schema_types_from_field_group( $context_id ); |
| 99 | if ( ! empty( $context_types ) ) { |
| 100 | $priority_types = array_unique( array_merge( $context_types, $priority_types ) ); |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Filter the priority Schema.org types |
| 106 | * |
| 107 | * Allows developers to customize which types appear first in selection lists. |
| 108 | * |
| 109 | * @param array $priority_types Array of priority type names. |
| 110 | * @param integer $context_id The field group ID providing context, or 0. |
| 111 | */ |
| 112 | return apply_filters( 'acf/schema/schema_priority_types', $priority_types, $context_id ); |
| 113 | } |
| 114 | |
| 115 | /** |
| 116 | * Get schema types configured on post types or blocks associated with a field group. |
| 117 | * |
| 118 | * Extracts schema_type values from ACF post types and blocks that are |
| 119 | * referenced in the field group's location rules. |
| 120 | * |
| 121 | * @since 6.8.0 |
| 122 | * |
| 123 | * @param integer $field_group_id The field group ID. |
| 124 | * @return array Array of unique schema type names. |
| 125 | */ |
| 126 | private static function get_schema_types_from_field_group( int $field_group_id ): array { |
| 127 | $field_group = acf_get_field_group( $field_group_id ); |
| 128 | |
| 129 | if ( empty( $field_group['location'] ) ) { |
| 130 | return array(); |
| 131 | } |
| 132 | |
| 133 | $schema_types = array(); |
| 134 | $acf_post_types = null; // Lazy load. |
| 135 | |
| 136 | foreach ( $field_group['location'] as $group ) { |
| 137 | foreach ( $group as $rule ) { |
| 138 | if ( $rule['operator'] !== '==' ) { |
| 139 | continue; |
| 140 | } |
| 141 | |
| 142 | // Handle post type location rules. |
| 143 | if ( $rule['param'] === 'post_type' ) { |
| 144 | // Lazy load ACF post types. |
| 145 | if ( $acf_post_types === null ) { |
| 146 | $acf_post_types = acf_get_acf_post_types(); |
| 147 | } |
| 148 | |
| 149 | foreach ( $acf_post_types as $acf_post_type ) { |
| 150 | if ( isset( $acf_post_type['post_type'] ) |
| 151 | && $acf_post_type['post_type'] === $rule['value'] |
| 152 | && ! empty( $acf_post_type['schema_type'] ) ) { |
| 153 | $types = (array) $acf_post_type['schema_type']; |
| 154 | $schema_types = array_merge( $schema_types, $types ); |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | // Handle block location rules. |
| 160 | if ( $rule['param'] === 'block' && $rule['value'] !== 'all' ) { |
| 161 | $block_type = acf_get_block_type( $rule['value'] ); |
| 162 | if ( $block_type && ! empty( $block_type['schema_type'] ) ) { |
| 163 | $types = (array) $block_type['schema_type']; |
| 164 | $schema_types = array_merge( $schema_types, $types ); |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | return array_unique( $schema_types ); |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Get all parent types for a given type |
| 175 | * |
| 176 | * @since 6.8.0 |
| 177 | * |
| 178 | * @param string $type The schema.org type name |
| 179 | * @return array Array of parent type names in order from direct parent to root |
| 180 | */ |
| 181 | private static function get_type_parents( $type ) { |
| 182 | $parents = array(); |
| 183 | $current = $type; |
| 184 | |
| 185 | $type_hierarchy = SchemaData::get_type_hierarchy(); |
| 186 | while ( isset( $type_hierarchy[ $current ] ) ) { |
| 187 | $parent = $type_hierarchy[ $current ]; |
| 188 | $parents[] = $parent; |
| 189 | $current = $parent; |
| 190 | } |
| 191 | |
| 192 | return $parents; |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Check if type_a is a parent/ancestor of type_b |
| 197 | * |
| 198 | * @since 6.8.0 |
| 199 | * |
| 200 | * @param string $type_a The potential parent type |
| 201 | * @param string $type_b The child type to check |
| 202 | * @return boolean True if type_a is an ancestor of type_b |
| 203 | */ |
| 204 | private static function is_parent_of( $type_a, $type_b ) { |
| 205 | $parents = self::get_type_parents( $type_b ); |
| 206 | return in_array( $type_a, $parents, true ); |
| 207 | } |
| 208 | |
| 209 | /** |
| 210 | * Infer the minimal set of types needed for a set of properties |
| 211 | * |
| 212 | * Given a list of properties, returns the most general types that |
| 213 | * directly define those properties, avoiding redundant child types. |
| 214 | * |
| 215 | * For example: |
| 216 | * - ['prepTime', 'cookTime'] -> ['Recipe'] (most specific type with those properties) |
| 217 | * - ['headline'] -> ['CreativeWork'] (the base type that defines headline) |
| 218 | * |
| 219 | * @since 6.8.0 |
| 220 | * |
| 221 | * @param array $properties Array of property names |
| 222 | * @return array Array of type names |
| 223 | */ |
| 224 | public static function infer_types_from_properties( $properties ) { |
| 225 | if ( empty( $properties ) ) { |
| 226 | return array(); |
| 227 | } |
| 228 | |
| 229 | // For each property, collect the types that directly define it |
| 230 | $types_per_property = array(); |
| 231 | $property_domains = SchemaData::get_property_domains(); |
| 232 | |
| 233 | foreach ( $properties as $property ) { |
| 234 | if ( ! isset( $property_domains[ $property ] ) ) { |
| 235 | continue; |
| 236 | } |
| 237 | |
| 238 | // These are the types that directly define this property |
| 239 | $types_per_property[ $property ] = $property_domains[ $property ]; |
| 240 | } |
| 241 | |
| 242 | if ( empty( $types_per_property ) ) { |
| 243 | return array(); |
| 244 | } |
| 245 | |
| 246 | // If we only have one property, return its direct types |
| 247 | if ( count( $types_per_property ) === 1 ) { |
| 248 | return array_values( reset( $types_per_property ) ); |
| 249 | } |
| 250 | |
| 251 | // Find types that can cover all properties (directly or through inheritance) |
| 252 | $all_types = array_unique( array_merge( ...array_values( $types_per_property ) ) ); |
| 253 | $valid_types = array(); |
| 254 | |
| 255 | foreach ( $all_types as $type ) { |
| 256 | $type_chain = array_merge( array( $type ), self::get_type_parents( $type ) ); |
| 257 | $covers_all = true; |
| 258 | |
| 259 | foreach ( $types_per_property as $property => $defining_types ) { |
| 260 | // Check if this type or any of its parents define this property |
| 261 | if ( empty( array_intersect( $type_chain, $defining_types ) ) ) { |
| 262 | $covers_all = false; |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | if ( $covers_all ) { |
| 268 | $valid_types[] = $type; |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | // If we found types that cover everything, remove redundant parents |
| 273 | if ( ! empty( $valid_types ) ) { |
| 274 | $minimal_types = array(); |
| 275 | foreach ( $valid_types as $type ) { |
| 276 | $is_redundant = false; |
| 277 | foreach ( $valid_types as $other_type ) { |
| 278 | if ( $type !== $other_type && self::is_parent_of( $type, $other_type ) ) { |
| 279 | // This type is a parent of another type in the list, so it's redundant |
| 280 | $is_redundant = true; |
| 281 | break; |
| 282 | } |
| 283 | } |
| 284 | if ( ! $is_redundant ) { |
| 285 | $minimal_types[] = $type; |
| 286 | } |
| 287 | } |
| 288 | return array_values( $minimal_types ); |
| 289 | } |
| 290 | |
| 291 | // No single type covers all properties, need multiple types |
| 292 | return self::find_minimal_type_set( $properties ); |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Find minimal set of types to cover all properties |
| 297 | * |
| 298 | * Uses a greedy algorithm to find the smallest set of types that |
| 299 | * collectively support all given properties. |
| 300 | * |
| 301 | * @since 6.8.0 |
| 302 | * |
| 303 | * @param array $properties Array of property names |
| 304 | * @return array Array of type names |
| 305 | */ |
| 306 | private static function find_minimal_type_set( $properties ) { |
| 307 | $uncovered_properties = $properties; |
| 308 | $selected_types = array(); |
| 309 | |
| 310 | $type_hierarchy = SchemaData::get_type_hierarchy(); |
| 311 | $property_domains = SchemaData::get_property_domains(); |
| 312 | |
| 313 | while ( ! empty( $uncovered_properties ) ) { |
| 314 | $best_type = null; |
| 315 | $best_coverage = 0; |
| 316 | |
| 317 | // Find the type that covers the most uncovered properties |
| 318 | foreach ( $type_hierarchy as $type => $parent ) { |
| 319 | $coverage = 0; |
| 320 | foreach ( $uncovered_properties as $property ) { |
| 321 | if ( isset( $property_domains[ $property ] ) ) { |
| 322 | $valid_types = $property_domains[ $property ]; |
| 323 | // Check if this type or any of its parents support the property |
| 324 | $type_chain = array_merge( array( $type ), self::get_type_parents( $type ) ); |
| 325 | if ( ! empty( array_intersect( $type_chain, $valid_types ) ) ) { |
| 326 | ++$coverage; |
| 327 | } |
| 328 | } |
| 329 | } |
| 330 | |
| 331 | if ( $coverage > $best_coverage ) { |
| 332 | $best_type = $type; |
| 333 | $best_coverage = $coverage; |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | if ( null === $best_type ) { |
| 338 | break; // No type covers remaining properties |
| 339 | } |
| 340 | |
| 341 | $selected_types[] = $best_type; |
| 342 | |
| 343 | // Remove covered properties |
| 344 | $type_chain = array_merge( array( $best_type ), self::get_type_parents( $best_type ) ); |
| 345 | $uncovered_properties = array_filter( |
| 346 | $uncovered_properties, |
| 347 | function ( $property ) use ( $type_chain, $property_domains ) { |
| 348 | if ( ! isset( $property_domains[ $property ] ) ) { |
| 349 | return true; |
| 350 | } |
| 351 | $valid_types = $property_domains[ $property ]; |
| 352 | return empty( array_intersect( $type_chain, $valid_types ) ); |
| 353 | } |
| 354 | ); |
| 355 | } |
| 356 | |
| 357 | return $selected_types; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Get all properties grouped by type |
| 362 | * |
| 363 | * Returns an associative array where keys are type names and values |
| 364 | * are arrays of property names that belong to that type. |
| 365 | * |
| 366 | * @since 6.8.0 |
| 367 | * |
| 368 | * @return array Associative array of type => properties |
| 369 | */ |
| 370 | public static function get_properties_by_type() { |
| 371 | // Return cached result if available. |
| 372 | if ( self::$properties_by_type_cache !== null ) { |
| 373 | return self::$properties_by_type_cache; |
| 374 | } |
| 375 | |
| 376 | $properties_by_type = array(); |
| 377 | $property_domains = SchemaData::get_property_domains(); |
| 378 | |
| 379 | // Build reverse mapping from properties to types |
| 380 | foreach ( $property_domains as $property => $types ) { |
| 381 | foreach ( $types as $type ) { |
| 382 | if ( ! isset( $properties_by_type[ $type ] ) ) { |
| 383 | $properties_by_type[ $type ] = array(); |
| 384 | } |
| 385 | $properties_by_type[ $type ][] = $property; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | // Sort properties within each type |
| 390 | foreach ( $properties_by_type as $type => $properties ) { |
| 391 | sort( $properties_by_type[ $type ] ); |
| 392 | } |
| 393 | |
| 394 | // Sort by type name |
| 395 | ksort( $properties_by_type ); |
| 396 | |
| 397 | // Cache the result. |
| 398 | self::$properties_by_type_cache = $properties_by_type; |
| 399 | |
| 400 | return $properties_by_type; |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * Get the expected types (range) for a property |
| 405 | * |
| 406 | * Returns the types that a property expects as its value. |
| 407 | * For example, 'author' expects ['Person', 'Organization'] |
| 408 | * |
| 409 | * @since 6.8.0 |
| 410 | * |
| 411 | * @param string $property The property name |
| 412 | * @return array Array of type names, or empty array if not found |
| 413 | */ |
| 414 | public static function get_property_range( $property ) { |
| 415 | $property_ranges = SchemaData::get_property_ranges(); |
| 416 | return $property_ranges[ $property ] ?? array(); |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * Check if a property expects an object (not a primitive type) |
| 421 | * |
| 422 | * Returns true if the property expects a schema.org Type as its value, |
| 423 | * meaning it should be a nested object with @type. |
| 424 | * |
| 425 | * Primitive types: Text, Number, Boolean, Date, DateTime, Time, URL, etc. |
| 426 | * |
| 427 | * @since 6.8.0 |
| 428 | * |
| 429 | * @param string $property The property name |
| 430 | * @return boolean True if property expects an object |
| 431 | */ |
| 432 | public static function property_expects_object( $property ) { |
| 433 | $range = self::get_property_range( $property ); |
| 434 | |
| 435 | if ( empty( $range ) ) { |
| 436 | return false; |
| 437 | } |
| 438 | |
| 439 | // If any range type is not a primitive, it expects an object |
| 440 | foreach ( $range as $type ) { |
| 441 | if ( ! in_array( $type, self::$primitive_types, true ) ) { |
| 442 | return true; |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | return false; |
| 447 | } |
| 448 | |
| 449 | /** |
| 450 | * Get the preferred object type for a property |
| 451 | * |
| 452 | * When a property expects an object, this returns the most appropriate type. |
| 453 | * For properties with multiple possible types, returns the first one. |
| 454 | * |
| 455 | * @since 6.8.0 |
| 456 | * |
| 457 | * @param string $property The property name |
| 458 | * @return string|null The type name, or null if property doesn't expect an object |
| 459 | */ |
| 460 | public static function get_preferred_object_type( $property ) { |
| 461 | if ( ! self::property_expects_object( $property ) ) { |
| 462 | return null; |
| 463 | } |
| 464 | |
| 465 | $range = self::get_property_range( $property ); |
| 466 | |
| 467 | // Filter out primitive types |
| 468 | $object_types = array_diff( $range, self::$primitive_types ); |
| 469 | |
| 470 | // Return first object type |
| 471 | return ! empty( $object_types ) ? reset( $object_types ) : null; |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Get the supported JSON-LD ranges for a field type |
| 476 | * |
| 477 | * Returns the Schema.org types that a field type can output. |
| 478 | * |
| 479 | * @since 6.8.0 |
| 480 | * |
| 481 | * @param string $field_type The ACF field type name (e.g., 'image', 'user') |
| 482 | * @return array Array of supported range types |
| 483 | */ |
| 484 | public static function get_field_type_ranges( $field_type ) { |
| 485 | $field_type_obj = acf_get_field_type( $field_type ); |
| 486 | |
| 487 | if ( ! $field_type_obj || ! method_exists( $field_type_obj, 'get_jsonld_output_types' ) ) { |
| 488 | return array(); |
| 489 | } |
| 490 | |
| 491 | return $field_type_obj->get_jsonld_output_types(); |
| 492 | } |
| 493 | |
| 494 | /** |
| 495 | * Check if a Schema.org type has properties defined on it or its ancestors |
| 496 | * |
| 497 | * Walks up the type hierarchy checking if the type or any parent (excluding |
| 498 | * Thing, which is too generic) has properties defined. This distinguishes |
| 499 | * structural types (Person, Place, Organization) from value types (Duration, |
| 500 | * Distance) that have no meaningful sub-properties. |
| 501 | * |
| 502 | * @since 6.8.0 |
| 503 | * |
| 504 | * @param string $type The Schema.org type name |
| 505 | * @return boolean True if type or an ancestor has properties defined |
| 506 | */ |
| 507 | public static function type_has_properties( $type ) { |
| 508 | $current = $type; |
| 509 | $property_domains = SchemaData::get_property_domains(); |
| 510 | $type_hierarchy = SchemaData::get_type_hierarchy(); |
| 511 | |
| 512 | // Walk up the hierarchy, but stop before Thing (too generic). |
| 513 | while ( $current && 'Thing' !== $current ) { |
| 514 | foreach ( $property_domains as $domains ) { |
| 515 | if ( in_array( $current, $domains, true ) ) { |
| 516 | return true; |
| 517 | } |
| 518 | } |
| 519 | // Move to parent type. |
| 520 | $current = $type_hierarchy[ $current ] ?? null; |
| 521 | } |
| 522 | |
| 523 | return false; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * Get valid output formats for a field/property combination |
| 528 | * |
| 529 | * When a field type supports multiple output formats (e.g., image can |
| 530 | * output URL or ImageObject), this returns the formats valid for a |
| 531 | * specific property. |
| 532 | * |
| 533 | * @since 6.8.0 |
| 534 | * |
| 535 | * @param string $field_type The ACF field type name |
| 536 | * @param string $property The Schema.org property name |
| 537 | * @return array Array of valid output format types |
| 538 | */ |
| 539 | public static function get_valid_output_formats( $field_type, $property ) { |
| 540 | $field_ranges = self::get_field_type_ranges( $field_type ); |
| 541 | $property_ranges = self::get_property_range( $property ); |
| 542 | |
| 543 | if ( empty( $field_ranges ) || empty( $property_ranges ) ) { |
| 544 | return array(); |
| 545 | } |
| 546 | |
| 547 | $valid_formats = array(); |
| 548 | |
| 549 | foreach ( $field_ranges as $field_range ) { |
| 550 | // Direct match |
| 551 | if ( in_array( $field_range, $property_ranges, true ) ) { |
| 552 | $valid_formats[] = $field_range; |
| 553 | continue; |
| 554 | } |
| 555 | |
| 556 | // Skip inheritance check for primitive types. |
| 557 | if ( in_array( $field_range, self::$primitive_types, true ) ) { |
| 558 | continue; |
| 559 | } |
| 560 | |
| 561 | // Check if field range is a subtype of any property range |
| 562 | foreach ( $property_ranges as $property_range ) { |
| 563 | // Skip if property expects a primitive type. |
| 564 | if ( in_array( $property_range, self::$primitive_types, true ) ) { |
| 565 | continue; |
| 566 | } |
| 567 | |
| 568 | if ( self::is_parent_of( $property_range, $field_range ) ) { |
| 569 | $valid_formats[] = $field_range; |
| 570 | break; |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | // For fields that output Thing, include property ranges and their subtypes. |
| 575 | // This allows Group/Repeater fields to show specific types like Person, HowToStep. |
| 576 | if ( 'Thing' === $field_range ) { |
| 577 | foreach ( $property_ranges as $property_range ) { |
| 578 | // Skip primitives. |
| 579 | if ( in_array( $property_range, self::$primitive_types, true ) ) { |
| 580 | continue; |
| 581 | } |
| 582 | |
| 583 | // Include the property range itself if it's a structural subtype of Thing. |
| 584 | if ( self::is_parent_of( $field_range, $property_range ) ) { |
| 585 | if ( self::type_has_properties( $property_range ) ) { |
| 586 | $valid_formats[] = $property_range; |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | // Also include subtypes of the property range (e.g., HowToStep for CreativeWork). |
| 591 | $type_hierarchy = SchemaData::get_type_hierarchy(); |
| 592 | foreach ( $type_hierarchy as $type => $parent ) { |
| 593 | if ( self::is_parent_of( $property_range, $type ) ) { |
| 594 | if ( self::type_has_properties( $type ) ) { |
| 595 | $valid_formats[] = $type; |
| 596 | } |
| 597 | } |
| 598 | } |
| 599 | } |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | // Handle text value types (Duration, Distance, etc.). |
| 604 | // These are modeled as objects in Schema.org but are really formatted strings. |
| 605 | // Text fields should be able to output these types. |
| 606 | if ( in_array( 'Text', $field_ranges, true ) ) { |
| 607 | foreach ( $property_ranges as $property_range ) { |
| 608 | if ( in_array( $property_range, self::$text_value_types, true ) ) { |
| 609 | $valid_formats[] = $property_range; |
| 610 | } |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | return array_unique( $valid_formats ); |
| 615 | } |
| 616 | |
| 617 | /** |
| 618 | * Parse a qualified property string (e.g., "Offer.price" or "price") |
| 619 | * |
| 620 | * Returns an array with 'type' and 'property' keys. |
| 621 | * For unqualified properties (no dot), type will be null. |
| 622 | * |
| 623 | * @since 6.8.0 |
| 624 | * |
| 625 | * @param string $qualified_property The property string, optionally prefixed with Type. |
| 626 | * @return array Array with 'type' (string|null) and 'property' (string) keys. |
| 627 | */ |
| 628 | public static function parse_qualified_property( $qualified_property ) { |
| 629 | if ( strpos( $qualified_property, '.' ) !== false ) { |
| 630 | list( $type, $property ) = explode( '.', $qualified_property, 2 ); |
| 631 | return array( |
| 632 | 'type' => $type, |
| 633 | 'property' => $property, |
| 634 | ); |
| 635 | } |
| 636 | return array( |
| 637 | 'type' => null, |
| 638 | 'property' => $qualified_property, |
| 639 | ); |
| 640 | } |
| 641 | |
| 642 | /** |
| 643 | * Get just the property name from a qualified property string |
| 644 | * |
| 645 | * @since 6.8.0 |
| 646 | * |
| 647 | * @param string $qualified_property The property string, optionally prefixed with Type. |
| 648 | * @return string The property name without the type prefix. |
| 649 | */ |
| 650 | public static function get_property_name( $qualified_property ) { |
| 651 | return self::parse_qualified_property( $qualified_property )['property']; |
| 652 | } |
| 653 | |
| 654 | /** |
| 655 | * Get the type from a qualified property string |
| 656 | * |
| 657 | * @since 6.8.0 |
| 658 | * |
| 659 | * @param string $qualified_property The property string, optionally prefixed with Type. |
| 660 | * @return string|null The type name, or null if not qualified. |
| 661 | */ |
| 662 | public static function get_property_type( $qualified_property ) { |
| 663 | return self::parse_qualified_property( $qualified_property )['type']; |
| 664 | } |
| 665 | |
| 666 | /** |
| 667 | * Get the default output format for a field/property combination |
| 668 | * |
| 669 | * When multiple formats are valid, returns the most appropriate default. |
| 670 | * Prefers object types over primitives when both are available. |
| 671 | * |
| 672 | * @since 6.8.0 |
| 673 | * |
| 674 | * @param string $field_type The ACF field type name |
| 675 | * @param string $property The Schema.org property name |
| 676 | * @return string|null The default format type, or null if none valid |
| 677 | */ |
| 678 | public static function get_default_output_format( $field_type, $property ) { |
| 679 | $valid_formats = self::get_valid_output_formats( $field_type, $property ); |
| 680 | |
| 681 | if ( empty( $valid_formats ) ) { |
| 682 | return null; |
| 683 | } |
| 684 | |
| 685 | // If only one format, use it |
| 686 | if ( count( $valid_formats ) === 1 ) { |
| 687 | return $valid_formats[0]; |
| 688 | } |
| 689 | |
| 690 | // Prefer object types over primitives (richer data) |
| 691 | $object_formats = array_diff( $valid_formats, self::$primitive_types ); |
| 692 | |
| 693 | if ( ! empty( $object_formats ) ) { |
| 694 | return reset( $object_formats ); |
| 695 | } |
| 696 | |
| 697 | // Fall back to first primitive |
| 698 | return $valid_formats[0]; |
| 699 | } |
| 700 | } |
| 701 |