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1 <?php 2 /** 3 * REST API: WP_REST_Terms_Controller class 4 * 5 * @package WordPress 6 * @subpackage REST_API 7 * @since 4.7.0 8 */ 9 10 /** 11 * Core class used to managed terms associated with a taxonomy via the REST API. 12 * 13 * @since 4.7.0 14 * 15 * @see WP_REST_Controller 16 */ 17 class WP_REST_Terms_Controller extends WP_REST_Controller { 18 19 /** 20 * Taxonomy key. 21 * 22 * @since 4.7.0 23 * @var string 24 */ 25 protected $taxonomy; 26 27 /** 28 * Instance of a term meta fields object. 29 * 30 * @since 4.7.0 31 * @var WP_REST_Term_Meta_Fields 32 */ 33 protected $meta; 34 35 /** 36 * Column to have the terms be sorted by. 37 * 38 * @since 4.7.0 39 * @var string 40 */ 41 protected $sort_column; 42 43 /** 44 * Number of terms that were found. 45 * 46 * @since 4.7.0 47 * @var int 48 */ 49 protected $total_terms; 50 51 /** 52 * Constructor. 53 * 54 * @since 4.7.0 55 * 56 * @param string $taxonomy Taxonomy key. 57 */ 58 public function __construct( $taxonomy ) { 59 $this->taxonomy = $taxonomy; 60 $this->namespace = 'wp/v2'; 61 $tax_obj = get_taxonomy( $taxonomy ); 62 $this->rest_base = ! empty( $tax_obj->rest_base ) ? $tax_obj->rest_base : $tax_obj->name; 63 64 $this->meta = new WP_REST_Term_Meta_Fields( $taxonomy ); 65 } 66 67 /** 68 * Registers the routes for terms. 69 * 70 * @since 4.7.0 71 * 72 * @see register_rest_route() 73 */ 74 public function register_routes() { 75 76 register_rest_route( 77 $this->namespace, 78 '/' . $this->rest_base, 79 array( 80 array( 81 'methods' => WP_REST_Server::READABLE, 82 'callback' => array( $this, 'get_items' ), 83 'permission_callback' => array( $this, 'get_items_permissions_check' ), 84 'args' => $this->get_collection_params(), 85 ), 86 array( 87 'methods' => WP_REST_Server::CREATABLE, 88 'callback' => array( $this, 'create_item' ), 89 'permission_callback' => array( $this, 'create_item_permissions_check' ), 90 'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ), 91 ), 92 'schema' => array( $this, 'get_public_item_schema' ), 93 ) 94 ); 95 96 register_rest_route( 97 $this->namespace, 98 '/' . $this->rest_base . '/(?P<id>[\d]+)', 99 array( 100 'args' => array( 101 'id' => array( 102 'description' => __( 'Unique identifier for the term.' ), 103 'type' => 'integer', 104 ), 105 ), 106 array( 107 'methods' => WP_REST_Server::READABLE, 108 'callback' => array( $this, 'get_item' ), 109 'permission_callback' => array( $this, 'get_item_permissions_check' ), 110 'args' => array( 111 'context' => $this->get_context_param( array( 'default' => 'view' ) ), 112 ), 113 ), 114 array( 115 'methods' => WP_REST_Server::EDITABLE, 116 'callback' => array( $this, 'update_item' ), 117 'permission_callback' => array( $this, 'update_item_permissions_check' ), 118 'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ), 119 ), 120 array( 121 'methods' => WP_REST_Server::DELETABLE, 122 'callback' => array( $this, 'delete_item' ), 123 'permission_callback' => array( $this, 'delete_item_permissions_check' ), 124 'args' => array( 125 'force' => array( 126 'type' => 'boolean', 127 'default' => false, 128 'description' => __( 'Required to be true, as terms do not support trashing.' ), 129 ), 130 ), 131 ), 132 'schema' => array( $this, 'get_public_item_schema' ), 133 ) 134 ); 135 } 136 137 /** 138 * Checks if a request has access to read terms in the specified taxonomy. 139 * 140 * @since 4.7.0 141 * 142 * @param WP_REST_Request $request Full details about the request. 143 * @return true|WP_Error True if the request has read access, otherwise false or WP_Error object. 144 */ 145 public function get_items_permissions_check( $request ) { 146 $tax_obj = get_taxonomy( $this->taxonomy ); 147 148 if ( ! $tax_obj || ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) { 149 return false; 150 } 151 152 if ( 'edit' === $request['context'] && ! current_user_can( $tax_obj->cap->edit_terms ) ) { 153 return new WP_Error( 154 'rest_forbidden_context', 155 __( 'Sorry, you are not allowed to edit terms in this taxonomy.' ), 156 array( 'status' => rest_authorization_required_code() ) 157 ); 158 } 159 160 return true; 161 } 162 163 /** 164 * Retrieves terms associated with a taxonomy. 165 * 166 * @since 4.7.0 167 * 168 * @param WP_REST_Request $request Full details about the request. 169 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 170 */ 171 public function get_items( $request ) { 172 173 // Retrieve the list of registered collection query parameters. 174 $registered = $this->get_collection_params(); 175 176 /* 177 * This array defines mappings between public API query parameters whose 178 * values are accepted as-passed, and their internal WP_Query parameter 179 * name equivalents (some are the same). Only values which are also 180 * present in $registered will be set. 181 */ 182 $parameter_mappings = array( 183 'exclude' => 'exclude', 184 'include' => 'include', 185 'order' => 'order', 186 'orderby' => 'orderby', 187 'post' => 'post', 188 'hide_empty' => 'hide_empty', 189 'per_page' => 'number', 190 'search' => 'search', 191 'slug' => 'slug', 192 ); 193 194 $prepared_args = array( 'taxonomy' => $this->taxonomy ); 195 196 /* 197 * For each known parameter which is both registered and present in the request, 198 * set the parameter's value on the query $prepared_args. 199 */ 200 foreach ( $parameter_mappings as $api_param => $wp_param ) { 201 if ( isset( $registered[ $api_param ], $request[ $api_param ] ) ) { 202 $prepared_args[ $wp_param ] = $request[ $api_param ]; 203 } 204 } 205 206 if ( isset( $prepared_args['orderby'] ) && isset( $request['orderby'] ) ) { 207 $orderby_mappings = array( 208 'include_slugs' => 'slug__in', 209 ); 210 211 if ( isset( $orderby_mappings[ $request['orderby'] ] ) ) { 212 $prepared_args['orderby'] = $orderby_mappings[ $request['orderby'] ]; 213 } 214 } 215 216 if ( isset( $registered['offset'] ) && ! empty( $request['offset'] ) ) { 217 $prepared_args['offset'] = $request['offset']; 218 } else { 219 $prepared_args['offset'] = ( $request['page'] - 1 ) * $prepared_args['number']; 220 } 221 222 $taxonomy_obj = get_taxonomy( $this->taxonomy ); 223 224 if ( $taxonomy_obj->hierarchical && isset( $registered['parent'], $request['parent'] ) ) { 225 if ( 0 === $request['parent'] ) { 226 // Only query top-level terms. 227 $prepared_args['parent'] = 0; 228 } else { 229 if ( $request['parent'] ) { 230 $prepared_args['parent'] = $request['parent']; 231 } 232 } 233 } 234 235 /** 236 * Filters get_terms() arguments when querying terms via the REST API. 237 * 238 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. 239 * 240 * Possible hook names include: 241 * 242 * - `rest_category_query` 243 * - `rest_post_tag_query` 244 * 245 * Enables adding extra arguments or setting defaults for a terms 246 * collection request. 247 * 248 * @since 4.7.0 249 * 250 * @link https://developer.wordpress.org/reference/functions/get_terms/ 251 * 252 * @param array $prepared_args Array of arguments for get_terms(). 253 * @param WP_REST_Request $request The REST API request. 254 */ 255 $prepared_args = apply_filters( "rest_{$this->taxonomy}_query", $prepared_args, $request ); 256 257 if ( ! empty( $prepared_args['post'] ) ) { 258 $query_result = wp_get_object_terms( $prepared_args['post'], $this->taxonomy, $prepared_args ); 259 260 // Used when calling wp_count_terms() below. 261 $prepared_args['object_ids'] = $prepared_args['post']; 262 } else { 263 $query_result = get_terms( $prepared_args ); 264 } 265 266 $count_args = $prepared_args; 267 268 unset( $count_args['number'], $count_args['offset'] ); 269 270 $total_terms = wp_count_terms( $count_args ); 271 272 // wp_count_terms() can return a falsey value when the term has no children. 273 if ( ! $total_terms ) { 274 $total_terms = 0; 275 } 276 277 $response = array(); 278 279 foreach ( $query_result as $term ) { 280 $data = $this->prepare_item_for_response( $term, $request ); 281 $response[] = $this->prepare_response_for_collection( $data ); 282 } 283 284 $response = rest_ensure_response( $response ); 285 286 // Store pagination values for headers. 287 $per_page = (int) $prepared_args['number']; 288 $page = ceil( ( ( (int) $prepared_args['offset'] ) / $per_page ) + 1 ); 289 290 $response->header( 'X-WP-Total', (int) $total_terms ); 291 292 $max_pages = ceil( $total_terms / $per_page ); 293 294 $response->header( 'X-WP-TotalPages', (int) $max_pages ); 295 296 $base = add_query_arg( urlencode_deep( $request->get_query_params() ), rest_url( $this->namespace . '/' . $this->rest_base ) ); 297 if ( $page > 1 ) { 298 $prev_page = $page - 1; 299 300 if ( $prev_page > $max_pages ) { 301 $prev_page = $max_pages; 302 } 303 304 $prev_link = add_query_arg( 'page', $prev_page, $base ); 305 $response->link_header( 'prev', $prev_link ); 306 } 307 if ( $max_pages > $page ) { 308 $next_page = $page + 1; 309 $next_link = add_query_arg( 'page', $next_page, $base ); 310 311 $response->link_header( 'next', $next_link ); 312 } 313 314 return $response; 315 } 316 317 /** 318 * Get the term, if the ID is valid. 319 * 320 * @since 4.7.2 321 * 322 * @param int $id Supplied ID. 323 * @return WP_Term|WP_Error Term object if ID is valid, WP_Error otherwise. 324 */ 325 protected function get_term( $id ) { 326 $error = new WP_Error( 327 'rest_term_invalid', 328 __( 'Term does not exist.' ), 329 array( 'status' => 404 ) 330 ); 331 332 if ( ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) { 333 return $error; 334 } 335 336 if ( (int) $id <= 0 ) { 337 return $error; 338 } 339 340 $term = get_term( (int) $id, $this->taxonomy ); 341 if ( empty( $term ) || $term->taxonomy !== $this->taxonomy ) { 342 return $error; 343 } 344 345 return $term; 346 } 347 348 /** 349 * Checks if a request has access to read or edit the specified term. 350 * 351 * @since 4.7.0 352 * 353 * @param WP_REST_Request $request Full details about the request. 354 * @return true|WP_Error True if the request has read access for the item, otherwise false or WP_Error object. 355 */ 356 public function get_item_permissions_check( $request ) { 357 $term = $this->get_term( $request['id'] ); 358 359 if ( is_wp_error( $term ) ) { 360 return $term; 361 } 362 363 if ( 'edit' === $request['context'] && ! current_user_can( 'edit_term', $term->term_id ) ) { 364 return new WP_Error( 365 'rest_forbidden_context', 366 __( 'Sorry, you are not allowed to edit this term.' ), 367 array( 'status' => rest_authorization_required_code() ) 368 ); 369 } 370 371 return true; 372 } 373 374 /** 375 * Gets a single term from a taxonomy. 376 * 377 * @since 4.7.0 378 * 379 * @param WP_REST_Request $request Full details about the request. 380 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 381 */ 382 public function get_item( $request ) { 383 $term = $this->get_term( $request['id'] ); 384 if ( is_wp_error( $term ) ) { 385 return $term; 386 } 387 388 $response = $this->prepare_item_for_response( $term, $request ); 389 390 return rest_ensure_response( $response ); 391 } 392 393 /** 394 * Checks if a request has access to create a term. 395 * 396 * @since 4.7.0 397 * 398 * @param WP_REST_Request $request Full details about the request. 399 * @return true|WP_Error True if the request has access to create items, false or WP_Error object otherwise. 400 */ 401 public function create_item_permissions_check( $request ) { 402 403 if ( ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) { 404 return false; 405 } 406 407 $taxonomy_obj = get_taxonomy( $this->taxonomy ); 408 409 if ( ( is_taxonomy_hierarchical( $this->taxonomy ) 410 && ! current_user_can( $taxonomy_obj->cap->edit_terms ) ) 411 || ( ! is_taxonomy_hierarchical( $this->taxonomy ) 412 && ! current_user_can( $taxonomy_obj->cap->assign_terms ) ) ) { 413 return new WP_Error( 414 'rest_cannot_create', 415 __( 'Sorry, you are not allowed to create terms in this taxonomy.' ), 416 array( 'status' => rest_authorization_required_code() ) 417 ); 418 } 419 420 return true; 421 } 422 423 /** 424 * Creates a single term in a taxonomy. 425 * 426 * @since 4.7.0 427 * 428 * @param WP_REST_Request $request Full details about the request. 429 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 430 */ 431 public function create_item( $request ) { 432 if ( isset( $request['parent'] ) ) { 433 if ( ! is_taxonomy_hierarchical( $this->taxonomy ) ) { 434 return new WP_Error( 435 'rest_taxonomy_not_hierarchical', 436 __( 'Cannot set parent term, taxonomy is not hierarchical.' ), 437 array( 'status' => 400 ) 438 ); 439 } 440 441 $parent = get_term( (int) $request['parent'], $this->taxonomy ); 442 443 if ( ! $parent ) { 444 return new WP_Error( 445 'rest_term_invalid', 446 __( 'Parent term does not exist.' ), 447 array( 'status' => 400 ) 448 ); 449 } 450 } 451 452 $prepared_term = $this->prepare_item_for_database( $request ); 453 454 $term = wp_insert_term( wp_slash( $prepared_term->name ), $this->taxonomy, wp_slash( (array) $prepared_term ) ); 455 if ( is_wp_error( $term ) ) { 456 /* 457 * If we're going to inform the client that the term already exists, 458 * give them the identifier for future use. 459 */ 460 $term_id = $term->get_error_data( 'term_exists' ); 461 if ( $term_id ) { 462 $existing_term = get_term( $term_id, $this->taxonomy ); 463 $term->add_data( $existing_term->term_id, 'term_exists' ); 464 $term->add_data( 465 array( 466 'status' => 400, 467 'term_id' => $term_id, 468 ) 469 ); 470 } 471 472 return $term; 473 } 474 475 $term = get_term( $term['term_id'], $this->taxonomy ); 476 477 /** 478 * Fires after a single term is created or updated via the REST API. 479 * 480 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. 481 * 482 * Possible hook names include: 483 * 484 * - `rest_insert_category` 485 * - `rest_insert_post_tag` 486 * 487 * @since 4.7.0 488 * 489 * @param WP_Term $term Inserted or updated term object. 490 * @param WP_REST_Request $request Request object. 491 * @param bool $creating True when creating a term, false when updating. 492 */ 493 do_action( "rest_insert_{$this->taxonomy}", $term, $request, true ); 494 495 $schema = $this->get_item_schema(); 496 if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) { 497 $meta_update = $this->meta->update_value( $request['meta'], $term->term_id ); 498 499 if ( is_wp_error( $meta_update ) ) { 500 return $meta_update; 501 } 502 } 503 504 $fields_update = $this->update_additional_fields_for_object( $term, $request ); 505 506 if ( is_wp_error( $fields_update ) ) { 507 return $fields_update; 508 } 509 510 $request->set_param( 'context', 'edit' ); 511 512 /** 513 * Fires after a single term is completely created or updated via the REST API. 514 * 515 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. 516 * 517 * Possible hook names include: 518 * 519 * - `rest_after_insert_category` 520 * - `rest_after_insert_post_tag` 521 * 522 * @since 5.0.0 523 * 524 * @param WP_Term $term Inserted or updated term object. 525 * @param WP_REST_Request $request Request object. 526 * @param bool $creating True when creating a term, false when updating. 527 */ 528 do_action( "rest_after_insert_{$this->taxonomy}", $term, $request, true ); 529 530 $response = $this->prepare_item_for_response( $term, $request ); 531 $response = rest_ensure_response( $response ); 532 533 $response->set_status( 201 ); 534 $response->header( 'Location', rest_url( $this->namespace . '/' . $this->rest_base . '/' . $term->term_id ) ); 535 536 return $response; 537 } 538 539 /** 540 * Checks if a request has access to update the specified term. 541 * 542 * @since 4.7.0 543 * 544 * @param WP_REST_Request $request Full details about the request. 545 * @return true|WP_Error True if the request has access to update the item, false or WP_Error object otherwise. 546 */ 547 public function update_item_permissions_check( $request ) { 548 $term = $this->get_term( $request['id'] ); 549 550 if ( is_wp_error( $term ) ) { 551 return $term; 552 } 553 554 if ( ! current_user_can( 'edit_term', $term->term_id ) ) { 555 return new WP_Error( 556 'rest_cannot_update', 557 __( 'Sorry, you are not allowed to edit this term.' ), 558 array( 'status' => rest_authorization_required_code() ) 559 ); 560 } 561 562 return true; 563 } 564 565 /** 566 * Updates a single term from a taxonomy. 567 * 568 * @since 4.7.0 569 * 570 * @param WP_REST_Request $request Full details about the request. 571 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 572 */ 573 public function update_item( $request ) { 574 $term = $this->get_term( $request['id'] ); 575 if ( is_wp_error( $term ) ) { 576 return $term; 577 } 578 579 if ( isset( $request['parent'] ) ) { 580 if ( ! is_taxonomy_hierarchical( $this->taxonomy ) ) { 581 return new WP_Error( 582 'rest_taxonomy_not_hierarchical', 583 __( 'Cannot set parent term, taxonomy is not hierarchical.' ), 584 array( 'status' => 400 ) 585 ); 586 } 587 588 $parent = get_term( (int) $request['parent'], $this->taxonomy ); 589 590 if ( ! $parent ) { 591 return new WP_Error( 592 'rest_term_invalid', 593 __( 'Parent term does not exist.' ), 594 array( 'status' => 400 ) 595 ); 596 } 597 } 598 599 $prepared_term = $this->prepare_item_for_database( $request ); 600 601 // Only update the term if we have something to update. 602 if ( ! empty( $prepared_term ) ) { 603 $update = wp_update_term( $term->term_id, $term->taxonomy, wp_slash( (array) $prepared_term ) ); 604 605 if ( is_wp_error( $update ) ) { 606 return $update; 607 } 608 } 609 610 $term = get_term( $term->term_id, $this->taxonomy ); 611 612 /** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */ 613 do_action( "rest_insert_{$this->taxonomy}", $term, $request, false ); 614 615 $schema = $this->get_item_schema(); 616 if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) { 617 $meta_update = $this->meta->update_value( $request['meta'], $term->term_id ); 618 619 if ( is_wp_error( $meta_update ) ) { 620 return $meta_update; 621 } 622 } 623 624 $fields_update = $this->update_additional_fields_for_object( $term, $request ); 625 626 if ( is_wp_error( $fields_update ) ) { 627 return $fields_update; 628 } 629 630 $request->set_param( 'context', 'edit' ); 631 632 /** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */ 633 do_action( "rest_after_insert_{$this->taxonomy}", $term, $request, false ); 634 635 $response = $this->prepare_item_for_response( $term, $request ); 636 637 return rest_ensure_response( $response ); 638 } 639 640 /** 641 * Checks if a request has access to delete the specified term. 642 * 643 * @since 4.7.0 644 * 645 * @param WP_REST_Request $request Full details about the request. 646 * @return true|WP_Error True if the request has access to delete the item, otherwise false or WP_Error object. 647 */ 648 public function delete_item_permissions_check( $request ) { 649 $term = $this->get_term( $request['id'] ); 650 651 if ( is_wp_error( $term ) ) { 652 return $term; 653 } 654 655 if ( ! current_user_can( 'delete_term', $term->term_id ) ) { 656 return new WP_Error( 657 'rest_cannot_delete', 658 __( 'Sorry, you are not allowed to delete this term.' ), 659 array( 'status' => rest_authorization_required_code() ) 660 ); 661 } 662 663 return true; 664 } 665 666 /** 667 * Deletes a single term from a taxonomy. 668 * 669 * @since 4.7.0 670 * 671 * @param WP_REST_Request $request Full details about the request. 672 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. 673 */ 674 public function delete_item( $request ) { 675 $term = $this->get_term( $request['id'] ); 676 if ( is_wp_error( $term ) ) { 677 return $term; 678 } 679 680 $force = isset( $request['force'] ) ? (bool) $request['force'] : false; 681 682 // We don't support trashing for terms. 683 if ( ! $force ) { 684 return new WP_Error( 685 'rest_trash_not_supported', 686 /* translators: %s: force=true */ 687 sprintf( __( "Terms do not support trashing. Set '%s' to delete." ), 'force=true' ), 688 array( 'status' => 501 ) 689 ); 690 } 691 692 $request->set_param( 'context', 'view' ); 693 694 $previous = $this->prepare_item_for_response( $term, $request ); 695 696 $retval = wp_delete_term( $term->term_id, $term->taxonomy ); 697 698 if ( ! $retval ) { 699 return new WP_Error( 700 'rest_cannot_delete', 701 __( 'The term cannot be deleted.' ), 702 array( 'status' => 500 ) 703 ); 704 } 705 706 $response = new WP_REST_Response(); 707 $response->set_data( 708 array( 709 'deleted' => true, 710 'previous' => $previous->get_data(), 711 ) 712 ); 713 714 /** 715 * Fires after a single term is deleted via the REST API. 716 * 717 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. 718 * 719 * Possible hook names include: 720 * 721 * - `rest_delete_category` 722 * - `rest_delete_post_tag` 723 * 724 * @since 4.7.0 725 * 726 * @param WP_Term $term The deleted term. 727 * @param WP_REST_Response $response The response data. 728 * @param WP_REST_Request $request The request sent to the API. 729 */ 730 do_action( "rest_delete_{$this->taxonomy}", $term, $response, $request ); 731 732 return $response; 733 } 734 735 /** 736 * Prepares a single term for create or update. 737 * 738 * @since 4.7.0 739 * 740 * @param WP_REST_Request $request Request object. 741 * @return object Term object. 742 */ 743 public function prepare_item_for_database( $request ) { 744 $prepared_term = new stdClass; 745 746 $schema = $this->get_item_schema(); 747 if ( isset( $request['name'] ) && ! empty( $schema['properties']['name'] ) ) { 748 $prepared_term->name = $request['name']; 749 } 750 751 if ( isset( $request['slug'] ) && ! empty( $schema['properties']['slug'] ) ) { 752 $prepared_term->slug = $request['slug']; 753 } 754 755 if ( isset( $request['taxonomy'] ) && ! empty( $schema['properties']['taxonomy'] ) ) { 756 $prepared_term->taxonomy = $request['taxonomy']; 757 } 758 759 if ( isset( $request['description'] ) && ! empty( $schema['properties']['description'] ) ) { 760 $prepared_term->description = $request['description']; 761 } 762 763 if ( isset( $request['parent'] ) && ! empty( $schema['properties']['parent'] ) ) { 764 $parent_term_id = 0; 765 $requested_parent = (int) $request['parent']; 766 767 if ( $requested_parent ) { 768 $parent_term = get_term( $requested_parent, $this->taxonomy ); 769 770 if ( $parent_term instanceof WP_Term ) { 771 $parent_term_id = $parent_term->term_id; 772 } 773 } 774 775 $prepared_term->parent = $parent_term_id; 776 } 777 778 /** 779 * Filters term data before inserting term via the REST API. 780 * 781 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. 782 * 783 * Possible hook names include: 784 * 785 * - `rest_pre_insert_category` 786 * - `rest_pre_insert_post_tag` 787 * 788 * @since 4.7.0 789 * 790 * @param object $prepared_term Term object. 791 * @param WP_REST_Request $request Request object. 792 */ 793 return apply_filters( "rest_pre_insert_{$this->taxonomy}", $prepared_term, $request ); 794 } 795 796 /** 797 * Prepares a single term output for response. 798 * 799 * @since 4.7.0 800 * 801 * @param WP_Term $item Term object. 802 * @param WP_REST_Request $request Request object. 803 * @return WP_REST_Response Response object. 804 */ 805 public function prepare_item_for_response( $item, $request ) { 806 807 $fields = $this->get_fields_for_response( $request ); 808 $data = array(); 809 810 if ( in_array( 'id', $fields, true ) ) { 811 $data['id'] = (int) $item->term_id; 812 } 813 814 if ( in_array( 'count', $fields, true ) ) { 815 $data['count'] = (int) $item->count; 816 } 817 818 if ( in_array( 'description', $fields, true ) ) { 819 $data['description'] = $item->description; 820 } 821 822 if ( in_array( 'link', $fields, true ) ) { 823 $data['link'] = get_term_link( $item ); 824 } 825 826 if ( in_array( 'name', $fields, true ) ) { 827 $data['name'] = $item->name; 828 } 829 830 if ( in_array( 'slug', $fields, true ) ) { 831 $data['slug'] = $item->slug; 832 } 833 834 if ( in_array( 'taxonomy', $fields, true ) ) { 835 $data['taxonomy'] = $item->taxonomy; 836 } 837 838 if ( in_array( 'parent', $fields, true ) ) { 839 $data['parent'] = (int) $item->parent; 840 } 841 842 if ( in_array( 'meta', $fields, true ) ) { 843 $data['meta'] = $this->meta->get_value( $item->term_id, $request ); 844 } 845 846 $context = ! empty( $request['context'] ) ? $request['context'] : 'view'; 847 $data = $this->add_additional_fields_to_object( $data, $request ); 848 $data = $this->filter_response_by_context( $data, $context ); 849 850 $response = rest_ensure_response( $data ); 851 852 $response->add_links( $this->prepare_links( $item ) ); 853 854 /** 855 * Filters the term data for a REST API response. 856 * 857 * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. 858 * 859 * Possible hook names include: 860 * 861 * - `rest_prepare_category` 862 * - `rest_prepare_post_tag` 863 * 864 * Allows modification of the term data right before it is returned. 865 * 866 * @since 4.7.0 867 * 868 * @param WP_REST_Response $response The response object. 869 * @param WP_Term $item The original term object. 870 * @param WP_REST_Request $request Request used to generate the response. 871 */ 872 return apply_filters( "rest_prepare_{$this->taxonomy}", $response, $item, $request ); 873 } 874 875 /** 876 * Prepares links for the request. 877 * 878 * @since 4.7.0 879 * 880 * @param WP_Term $term Term object. 881 * @return array Links for the given term. 882 */ 883 protected function prepare_links( $term ) { 884 $base = $this->namespace . '/' . $this->rest_base; 885 $links = array( 886 'self' => array( 887 'href' => rest_url( trailingslashit( $base ) . $term->term_id ), 888 ), 889 'collection' => array( 890 'href' => rest_url( $base ), 891 ), 892 'about' => array( 893 'href' => rest_url( sprintf( 'wp/v2/taxonomies/%s', $this->taxonomy ) ), 894 ), 895 ); 896 897 if ( $term->parent ) { 898 $parent_term = get_term( (int) $term->parent, $term->taxonomy ); 899 900 if ( $parent_term ) { 901 $links['up'] = array( 902 'href' => rest_url( trailingslashit( $base ) . $parent_term->term_id ), 903 'embeddable' => true, 904 ); 905 } 906 } 907 908 $taxonomy_obj = get_taxonomy( $term->taxonomy ); 909 910 if ( empty( $taxonomy_obj->object_type ) ) { 911 return $links; 912 } 913 914 $post_type_links = array(); 915 916 foreach ( $taxonomy_obj->object_type as $type ) { 917 $post_type_object = get_post_type_object( $type ); 918 919 if ( empty( $post_type_object->show_in_rest ) ) { 920 continue; 921 } 922 923 $rest_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name; 924 $post_type_links[] = array( 925 'href' => add_query_arg( $this->rest_base, $term->term_id, rest_url( sprintf( 'wp/v2/%s', $rest_base ) ) ), 926 ); 927 } 928 929 if ( ! empty( $post_type_links ) ) { 930 $links['https://api.w.org/post_type'] = $post_type_links; 931 } 932 933 return $links; 934 } 935 936 /** 937 * Retrieves the term's schema, conforming to JSON Schema. 938 * 939 * @since 4.7.0 940 * 941 * @return array Item schema data. 942 */ 943 public function get_item_schema() { 944 if ( $this->schema ) { 945 return $this->add_additional_fields_schema( $this->schema ); 946 } 947 948 $schema = array( 949 '$schema' => 'http://json-schema.org/draft-04/schema#', 950 'title' => 'post_tag' === $this->taxonomy ? 'tag' : $this->taxonomy, 951 'type' => 'object', 952 'properties' => array( 953 'id' => array( 954 'description' => __( 'Unique identifier for the term.' ), 955 'type' => 'integer', 956 'context' => array( 'view', 'embed', 'edit' ), 957 'readonly' => true, 958 ), 959 'count' => array( 960 'description' => __( 'Number of published posts for the term.' ), 961 'type' => 'integer', 962 'context' => array( 'view', 'edit' ), 963 'readonly' => true, 964 ), 965 'description' => array( 966 'description' => __( 'HTML description of the term.' ), 967 'type' => 'string', 968 'context' => array( 'view', 'edit' ), 969 ), 970 'link' => array( 971 'description' => __( 'URL of the term.' ), 972 'type' => 'string', 973 'format' => 'uri', 974 'context' => array( 'view', 'embed', 'edit' ), 975 'readonly' => true, 976 ), 977 'name' => array( 978 'description' => __( 'HTML title for the term.' ), 979 'type' => 'string', 980 'context' => array( 'view', 'embed', 'edit' ), 981 'arg_options' => array( 982 'sanitize_callback' => 'sanitize_text_field', 983 ), 984 'required' => true, 985 ), 986 'slug' => array( 987 'description' => __( 'An alphanumeric identifier for the term unique to its type.' ), 988 'type' => 'string', 989 'context' => array( 'view', 'embed', 'edit' ), 990 'arg_options' => array( 991 'sanitize_callback' => array( $this, 'sanitize_slug' ), 992 ), 993 ), 994 'taxonomy' => array( 995 'description' => __( 'Type attribution for the term.' ), 996 'type' => 'string', 997 'enum' => array( $this->taxonomy ), 998 'context' => array( 'view', 'embed', 'edit' ), 999 'readonly' => true, 1000 ), 1001 ), 1002 ); 1003 1004 $taxonomy = get_taxonomy( $this->taxonomy ); 1005 1006 if ( $taxonomy->hierarchical ) { 1007 $schema['properties']['parent'] = array( 1008 'description' => __( 'The parent term ID.' ), 1009 'type' => 'integer', 1010 'context' => array( 'view', 'edit' ), 1011 ); 1012 } 1013 1014 $schema['properties']['meta'] = $this->meta->get_field_schema(); 1015 1016 $this->schema = $schema; 1017 1018 return $this->add_additional_fields_schema( $this->schema ); 1019 } 1020 1021 /** 1022 * Retrieves the query params for collections. 1023 * 1024 * @since 4.7.0 1025 * 1026 * @return array Collection parameters. 1027 */ 1028 public function get_collection_params() { 1029 $query_params = parent::get_collection_params(); 1030 $taxonomy = get_taxonomy( $this->taxonomy ); 1031 1032 $query_params['context']['default'] = 'view'; 1033 1034 $query_params['exclude'] = array( 1035 'description' => __( 'Ensure result set excludes specific IDs.' ), 1036 'type' => 'array', 1037 'items' => array( 1038 'type' => 'integer', 1039 ), 1040 'default' => array(), 1041 ); 1042 1043 $query_params['include'] = array( 1044 'description' => __( 'Limit result set to specific IDs.' ), 1045 'type' => 'array', 1046 'items' => array( 1047 'type' => 'integer', 1048 ), 1049 'default' => array(), 1050 ); 1051 1052 if ( ! $taxonomy->hierarchical ) { 1053 $query_params['offset'] = array( 1054 'description' => __( 'Offset the result set by a specific number of items.' ), 1055 'type' => 'integer', 1056 ); 1057 } 1058 1059 $query_params['order'] = array( 1060 'description' => __( 'Order sort attribute ascending or descending.' ), 1061 'type' => 'string', 1062 'default' => 'asc', 1063 'enum' => array( 1064 'asc', 1065 'desc', 1066 ), 1067 ); 1068 1069 $query_params['orderby'] = array( 1070 'description' => __( 'Sort collection by term attribute.' ), 1071 'type' => 'string', 1072 'default' => 'name', 1073 'enum' => array( 1074 'id', 1075 'include', 1076 'name', 1077 'slug', 1078 'include_slugs', 1079 'term_group', 1080 'description', 1081 'count', 1082 ), 1083 ); 1084 1085 $query_params['hide_empty'] = array( 1086 'description' => __( 'Whether to hide terms not assigned to any posts.' ), 1087 'type' => 'boolean', 1088 'default' => false, 1089 ); 1090 1091 if ( $taxonomy->hierarchical ) { 1092 $query_params['parent'] = array( 1093 'description' => __( 'Limit result set to terms assigned to a specific parent.' ), 1094 'type' => 'integer', 1095 ); 1096 } 1097 1098 $query_params['post'] = array( 1099 'description' => __( 'Limit result set to terms assigned to a specific post.' ), 1100 'type' => 'integer', 1101 'default' => null, 1102 ); 1103 1104 $query_params['slug'] = array( 1105 'description' => __( 'Limit result set to terms with one or more specific slugs.' ), 1106 'type' => 'array', 1107 'items' => array( 1108 'type' => 'string', 1109 ), 1110 ); 1111 1112 /** 1113 * Filters collection parameters for the terms controller. 1114 * 1115 * The dynamic part of the filter `$this->taxonomy` refers to the taxonomy 1116 * slug for the controller. 1117 * 1118 * This filter registers the collection parameter, but does not map the 1119 * collection parameter to an internal WP_Term_Query parameter. Use the 1120 * `rest_{$this->taxonomy}_query` filter to set WP_Term_Query parameters. 1121 * 1122 * @since 4.7.0 1123 * 1124 * @param array $query_params JSON Schema-formatted collection parameters. 1125 * @param WP_Taxonomy $taxonomy Taxonomy object. 1126 */ 1127 return apply_filters( "rest_{$this->taxonomy}_collection_params", $query_params, $taxonomy ); 1128 } 1129 1130 /** 1131 * Checks that the taxonomy is valid. 1132 * 1133 * @since 4.7.0 1134 * 1135 * @param string $taxonomy Taxonomy to check. 1136 * @return bool Whether the taxonomy is allowed for REST management. 1137 */ 1138 protected function check_is_taxonomy_allowed( $taxonomy ) { 1139 $taxonomy_obj = get_taxonomy( $taxonomy ); 1140 if ( $taxonomy_obj && ! empty( $taxonomy_obj->show_in_rest ) ) { 1141 return true; 1142 } 1143 return false; 1144 } 1145 }
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| Generated: Mon Jul 26 01:00:04 2021 | Cross-referenced by PHPXref 0.7.1 |