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1 <?php 2 /** 3 * Navigation Menu functions 4 * 5 * @package WordPress 6 * @subpackage Nav_Menus 7 * @since 3.0.0 8 */ 9 10 /** 11 * Returns a navigation menu object. 12 * 13 * @since 3.0.0 14 * 15 * @param int|string|WP_Term $menu Menu ID, slug, name, or object. 16 * @return WP_Term|false Menu object on success, false if $menu param isn't supplied or term does not exist. 17 */ 18 function wp_get_nav_menu_object( $menu ) { 19 $menu_obj = false; 20 21 if ( is_object( $menu ) ) { 22 $menu_obj = $menu; 23 } 24 25 if ( $menu && ! $menu_obj ) { 26 $menu_obj = get_term( $menu, 'nav_menu' ); 27 28 if ( ! $menu_obj ) { 29 $menu_obj = get_term_by( 'slug', $menu, 'nav_menu' ); 30 } 31 32 if ( ! $menu_obj ) { 33 $menu_obj = get_term_by( 'name', $menu, 'nav_menu' ); 34 } 35 } 36 37 if ( ! $menu_obj || is_wp_error( $menu_obj ) ) { 38 $menu_obj = false; 39 } 40 41 /** 42 * Filters the nav_menu term retrieved for wp_get_nav_menu_object(). 43 * 44 * @since 4.3.0 45 * 46 * @param WP_Term|false $menu_obj Term from nav_menu taxonomy, or false if nothing had been found. 47 * @param int|string|WP_Term $menu The menu ID, slug, name, or object passed to wp_get_nav_menu_object(). 48 */ 49 return apply_filters( 'wp_get_nav_menu_object', $menu_obj, $menu ); 50 } 51 52 /** 53 * Determines whether the given ID is a navigation menu. 54 * 55 * Returns true if it is; false otherwise. 56 * 57 * @since 3.0.0 58 * 59 * @param int|string|WP_Term $menu Menu ID, slug, name, or object of menu to check. 60 * @return bool Whether the menu exists. 61 */ 62 function is_nav_menu( $menu ) { 63 if ( ! $menu ) { 64 return false; 65 } 66 67 $menu_obj = wp_get_nav_menu_object( $menu ); 68 69 if ( 70 $menu_obj && 71 ! is_wp_error( $menu_obj ) && 72 ! empty( $menu_obj->taxonomy ) && 73 'nav_menu' === $menu_obj->taxonomy 74 ) { 75 return true; 76 } 77 78 return false; 79 } 80 81 /** 82 * Registers navigation menu locations for a theme. 83 * 84 * @since 3.0.0 85 * 86 * @global array $_wp_registered_nav_menus 87 * 88 * @param string[] $locations Associative array of menu location identifiers (like a slug) and descriptive text. 89 */ 90 function register_nav_menus( $locations = array() ) { 91 global $_wp_registered_nav_menus; 92 93 add_theme_support( 'menus' ); 94 95 foreach ( $locations as $key => $value ) { 96 if ( is_int( $key ) ) { 97 _doing_it_wrong( __FUNCTION__, __( 'Nav menu locations must be strings.' ), '5.3.0' ); 98 break; 99 } 100 } 101 102 $_wp_registered_nav_menus = array_merge( (array) $_wp_registered_nav_menus, $locations ); 103 } 104 105 /** 106 * Unregisters a navigation menu location for a theme. 107 * 108 * @since 3.1.0 109 * 110 * @global array $_wp_registered_nav_menus 111 * 112 * @param string $location The menu location identifier. 113 * @return bool True on success, false on failure. 114 */ 115 function unregister_nav_menu( $location ) { 116 global $_wp_registered_nav_menus; 117 118 if ( is_array( $_wp_registered_nav_menus ) && isset( $_wp_registered_nav_menus[ $location ] ) ) { 119 unset( $_wp_registered_nav_menus[ $location ] ); 120 if ( empty( $_wp_registered_nav_menus ) ) { 121 _remove_theme_support( 'menus' ); 122 } 123 return true; 124 } 125 return false; 126 } 127 128 /** 129 * Registers a navigation menu location for a theme. 130 * 131 * @since 3.0.0 132 * 133 * @param string $location Menu location identifier, like a slug. 134 * @param string $description Menu location descriptive text. 135 */ 136 function register_nav_menu( $location, $description ) { 137 register_nav_menus( array( $location => $description ) ); 138 } 139 /** 140 * Retrieves all registered navigation menu locations in a theme. 141 * 142 * @since 3.0.0 143 * 144 * @global array $_wp_registered_nav_menus 145 * 146 * @return string[] Associative array of registered navigation menu descriptions keyed 147 * by their location. If none are registered, an empty array. 148 */ 149 function get_registered_nav_menus() { 150 global $_wp_registered_nav_menus; 151 if ( isset( $_wp_registered_nav_menus ) ) { 152 return $_wp_registered_nav_menus; 153 } 154 return array(); 155 } 156 157 /** 158 * Retrieves all registered navigation menu locations and the menus assigned to them. 159 * 160 * @since 3.0.0 161 * 162 * @return int[] Associative array of registered navigation menu IDs keyed by their 163 * location name. If none are registered, an empty array. 164 */ 165 function get_nav_menu_locations() { 166 $locations = get_theme_mod( 'nav_menu_locations' ); 167 return ( is_array( $locations ) ) ? $locations : array(); 168 } 169 170 /** 171 * Determines whether a registered nav menu location has a menu assigned to it. 172 * 173 * @since 3.0.0 174 * 175 * @param string $location Menu location identifier. 176 * @return bool Whether location has a menu. 177 */ 178 function has_nav_menu( $location ) { 179 $has_nav_menu = false; 180 181 $registered_nav_menus = get_registered_nav_menus(); 182 if ( isset( $registered_nav_menus[ $location ] ) ) { 183 $locations = get_nav_menu_locations(); 184 $has_nav_menu = ! empty( $locations[ $location ] ); 185 } 186 187 /** 188 * Filters whether a nav menu is assigned to the specified location. 189 * 190 * @since 4.3.0 191 * 192 * @param bool $has_nav_menu Whether there is a menu assigned to a location. 193 * @param string $location Menu location. 194 */ 195 return apply_filters( 'has_nav_menu', $has_nav_menu, $location ); 196 } 197 198 /** 199 * Returns the name of a navigation menu. 200 * 201 * @since 4.9.0 202 * 203 * @param string $location Menu location identifier. 204 * @return string Menu name. 205 */ 206 function wp_get_nav_menu_name( $location ) { 207 $menu_name = ''; 208 209 $locations = get_nav_menu_locations(); 210 211 if ( isset( $locations[ $location ] ) ) { 212 $menu = wp_get_nav_menu_object( $locations[ $location ] ); 213 214 if ( $menu && $menu->name ) { 215 $menu_name = $menu->name; 216 } 217 } 218 219 /** 220 * Filters the navigation menu name being returned. 221 * 222 * @since 4.9.0 223 * 224 * @param string $menu_name Menu name. 225 * @param string $location Menu location identifier. 226 */ 227 return apply_filters( 'wp_get_nav_menu_name', $menu_name, $location ); 228 } 229 230 /** 231 * Determines whether the given ID is a nav menu item. 232 * 233 * @since 3.0.0 234 * 235 * @param int $menu_item_id The ID of the potential nav menu item. 236 * @return bool Whether the given ID is that of a nav menu item. 237 */ 238 function is_nav_menu_item( $menu_item_id = 0 ) { 239 return ( ! is_wp_error( $menu_item_id ) && ( 'nav_menu_item' === get_post_type( $menu_item_id ) ) ); 240 } 241 242 /** 243 * Creates a navigation menu. 244 * 245 * Note that `$menu_name` is expected to be pre-slashed. 246 * 247 * @since 3.0.0 248 * 249 * @param string $menu_name Menu name. 250 * @return int|WP_Error Menu ID on success, WP_Error object on failure. 251 */ 252 function wp_create_nav_menu( $menu_name ) { 253 // expected_slashed ($menu_name) 254 return wp_update_nav_menu_object( 0, array( 'menu-name' => $menu_name ) ); 255 } 256 257 /** 258 * Deletes a navigation menu. 259 * 260 * @since 3.0.0 261 * 262 * @param int|string|WP_Term $menu Menu ID, slug, name, or object. 263 * @return bool|WP_Error True on success, false or WP_Error object on failure. 264 */ 265 function wp_delete_nav_menu( $menu ) { 266 $menu = wp_get_nav_menu_object( $menu ); 267 if ( ! $menu ) { 268 return false; 269 } 270 271 $menu_objects = get_objects_in_term( $menu->term_id, 'nav_menu' ); 272 if ( ! empty( $menu_objects ) ) { 273 foreach ( $menu_objects as $item ) { 274 wp_delete_post( $item ); 275 } 276 } 277 278 $result = wp_delete_term( $menu->term_id, 'nav_menu' ); 279 280 // Remove this menu from any locations. 281 $locations = get_nav_menu_locations(); 282 foreach ( $locations as $location => $menu_id ) { 283 if ( $menu_id === $menu->term_id ) { 284 $locations[ $location ] = 0; 285 } 286 } 287 set_theme_mod( 'nav_menu_locations', $locations ); 288 289 if ( $result && ! is_wp_error( $result ) ) { 290 291 /** 292 * Fires after a navigation menu has been successfully deleted. 293 * 294 * @since 3.0.0 295 * 296 * @param int $term_id ID of the deleted menu. 297 */ 298 do_action( 'wp_delete_nav_menu', $menu->term_id ); 299 } 300 301 return $result; 302 } 303 304 /** 305 * Saves the properties of a menu or create a new menu with those properties. 306 * 307 * Note that `$menu_data` is expected to be pre-slashed. 308 * 309 * @since 3.0.0 310 * 311 * @param int $menu_id The ID of the menu or "0" to create a new menu. 312 * @param array $menu_data The array of menu data. 313 * @return int|WP_Error Menu ID on success, WP_Error object on failure. 314 */ 315 function wp_update_nav_menu_object( $menu_id = 0, $menu_data = array() ) { 316 // expected_slashed ($menu_data) 317 $menu_id = (int) $menu_id; 318 319 $_menu = wp_get_nav_menu_object( $menu_id ); 320 321 $args = array( 322 'description' => ( isset( $menu_data['description'] ) ? $menu_data['description'] : '' ), 323 'name' => ( isset( $menu_data['menu-name'] ) ? $menu_data['menu-name'] : '' ), 324 'parent' => ( isset( $menu_data['parent'] ) ? (int) $menu_data['parent'] : 0 ), 325 'slug' => null, 326 ); 327 328 // Double-check that we're not going to have one menu take the name of another. 329 $_possible_existing = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' ); 330 if ( 331 $_possible_existing && 332 ! is_wp_error( $_possible_existing ) && 333 isset( $_possible_existing->term_id ) && 334 $_possible_existing->term_id !== $menu_id 335 ) { 336 return new WP_Error( 337 'menu_exists', 338 sprintf( 339 /* translators: %s: Menu name. */ 340 __( 'The menu name %s conflicts with another menu name. Please try another.' ), 341 '<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>' 342 ) 343 ); 344 } 345 346 // Menu doesn't already exist, so create a new menu. 347 if ( ! $_menu || is_wp_error( $_menu ) ) { 348 $menu_exists = get_term_by( 'name', $menu_data['menu-name'], 'nav_menu' ); 349 350 if ( $menu_exists ) { 351 return new WP_Error( 352 'menu_exists', 353 sprintf( 354 /* translators: %s: Menu name. */ 355 __( 'The menu name %s conflicts with another menu name. Please try another.' ), 356 '<strong>' . esc_html( $menu_data['menu-name'] ) . '</strong>' 357 ) 358 ); 359 } 360 361 $_menu = wp_insert_term( $menu_data['menu-name'], 'nav_menu', $args ); 362 363 if ( is_wp_error( $_menu ) ) { 364 return $_menu; 365 } 366 367 /** 368 * Fires after a navigation menu is successfully created. 369 * 370 * @since 3.0.0 371 * 372 * @param int $term_id ID of the new menu. 373 * @param array $menu_data An array of menu data. 374 */ 375 do_action( 'wp_create_nav_menu', $_menu['term_id'], $menu_data ); 376 377 return (int) $_menu['term_id']; 378 } 379 380 if ( ! $_menu || ! isset( $_menu->term_id ) ) { 381 return 0; 382 } 383 384 $menu_id = (int) $_menu->term_id; 385 386 $update_response = wp_update_term( $menu_id, 'nav_menu', $args ); 387 388 if ( is_wp_error( $update_response ) ) { 389 return $update_response; 390 } 391 392 $menu_id = (int) $update_response['term_id']; 393 394 /** 395 * Fires after a navigation menu has been successfully updated. 396 * 397 * @since 3.0.0 398 * 399 * @param int $menu_id ID of the updated menu. 400 * @param array $menu_data An array of menu data. 401 */ 402 do_action( 'wp_update_nav_menu', $menu_id, $menu_data ); 403 return $menu_id; 404 } 405 406 /** 407 * Saves the properties of a menu item or create a new one. 408 * 409 * The menu-item-title, menu-item-description and menu-item-attr-title are expected 410 * to be pre-slashed since they are passed directly to APIs that expect slashed data. 411 * 412 * @since 3.0.0 413 * @since 5.9.0 Added the `$fire_after_hooks` parameter. 414 * 415 * @param int $menu_id The ID of the menu. If 0, makes the menu item a draft orphan. 416 * @param int $menu_item_db_id The ID of the menu item. If 0, creates a new menu item. 417 * @param array $menu_item_data The menu item's data. 418 * @param bool $fire_after_hooks Whether to fire the after insert hooks. Default true. 419 * @return int|WP_Error The menu item's database ID or WP_Error object on failure. 420 */ 421 function wp_update_nav_menu_item( $menu_id = 0, $menu_item_db_id = 0, $menu_item_data = array(), $fire_after_hooks = true ) { 422 $menu_id = (int) $menu_id; 423 $menu_item_db_id = (int) $menu_item_db_id; 424 425 // Make sure that we don't convert non-nav_menu_item objects into nav_menu_item objects. 426 if ( ! empty( $menu_item_db_id ) && ! is_nav_menu_item( $menu_item_db_id ) ) { 427 return new WP_Error( 'update_nav_menu_item_failed', __( 'The given object ID is not that of a menu item.' ) ); 428 } 429 430 $menu = wp_get_nav_menu_object( $menu_id ); 431 432 if ( ! $menu && 0 !== $menu_id ) { 433 return new WP_Error( 'invalid_menu_id', __( 'Invalid menu ID.' ) ); 434 } 435 436 if ( is_wp_error( $menu ) ) { 437 return $menu; 438 } 439 440 $defaults = array( 441 'menu-item-db-id' => $menu_item_db_id, 442 'menu-item-object-id' => 0, 443 'menu-item-object' => '', 444 'menu-item-parent-id' => 0, 445 'menu-item-position' => 0, 446 'menu-item-type' => 'custom', 447 'menu-item-title' => '', 448 'menu-item-url' => '', 449 'menu-item-description' => '', 450 'menu-item-attr-title' => '', 451 'menu-item-target' => '', 452 'menu-item-classes' => '', 453 'menu-item-xfn' => '', 454 'menu-item-status' => '', 455 'menu-item-post-date' => '', 456 'menu-item-post-date-gmt' => '', 457 ); 458 459 $args = wp_parse_args( $menu_item_data, $defaults ); 460 461 if ( 0 === $menu_id ) { 462 $args['menu-item-position'] = 1; 463 } elseif ( 0 === (int) $args['menu-item-position'] ) { 464 $menu_items = array(); 465 466 if ( 0 !== $menu_id ) { 467 $menu_items = (array) wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) ); 468 } 469 470 $last_item = array_pop( $menu_items ); 471 472 if ( $last_item && isset( $last_item->menu_order ) ) { 473 $args['menu-item-position'] = 1 + $last_item->menu_order; 474 } else { 475 $args['menu-item-position'] = count( $menu_items ); 476 } 477 } 478 479 $original_parent = 0 < $menu_item_db_id ? get_post_field( 'post_parent', $menu_item_db_id ) : 0; 480 481 if ( 'custom' === $args['menu-item-type'] ) { 482 // If custom menu item, trim the URL. 483 $args['menu-item-url'] = trim( $args['menu-item-url'] ); 484 } else { 485 /* 486 * If non-custom menu item, then: 487 * - use the original object's URL. 488 * - blank default title to sync with the original object's title. 489 */ 490 491 $args['menu-item-url'] = ''; 492 493 $original_title = ''; 494 495 if ( 'taxonomy' === $args['menu-item-type'] ) { 496 $original_object = get_term( $args['menu-item-object-id'], $args['menu-item-object'] ); 497 498 if ( $original_object instanceof WP_Term ) { 499 $original_parent = get_term_field( 'parent', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' ); 500 $original_title = get_term_field( 'name', $args['menu-item-object-id'], $args['menu-item-object'], 'raw' ); 501 } 502 } elseif ( 'post_type' === $args['menu-item-type'] ) { 503 $original_object = get_post( $args['menu-item-object-id'] ); 504 505 if ( $original_object instanceof WP_Post ) { 506 $original_parent = (int) $original_object->post_parent; 507 $original_title = $original_object->post_title; 508 } 509 } elseif ( 'post_type_archive' === $args['menu-item-type'] ) { 510 $original_object = get_post_type_object( $args['menu-item-object'] ); 511 512 if ( $original_object instanceof WP_Post_Type ) { 513 $original_title = $original_object->labels->archives; 514 } 515 } 516 517 if ( wp_unslash( $args['menu-item-title'] ) === wp_specialchars_decode( $original_title ) ) { 518 $args['menu-item-title'] = ''; 519 } 520 521 // Hack to get wp to create a post object when too many properties are empty. 522 if ( '' === $args['menu-item-title'] && '' === $args['menu-item-description'] ) { 523 $args['menu-item-description'] = ' '; 524 } 525 } 526 527 // Populate the menu item object. 528 $post = array( 529 'menu_order' => $args['menu-item-position'], 530 'ping_status' => 0, 531 'post_content' => $args['menu-item-description'], 532 'post_excerpt' => $args['menu-item-attr-title'], 533 'post_parent' => $original_parent, 534 'post_title' => $args['menu-item-title'], 535 'post_type' => 'nav_menu_item', 536 ); 537 538 $post_date = wp_resolve_post_date( $args['menu-item-post-date'], $args['menu-item-post-date-gmt'] ); 539 if ( $post_date ) { 540 $post['post_date'] = $post_date; 541 } 542 543 $update = 0 !== $menu_item_db_id; 544 545 // New menu item. Default is draft status. 546 if ( ! $update ) { 547 $post['ID'] = 0; 548 $post['post_status'] = 'publish' === $args['menu-item-status'] ? 'publish' : 'draft'; 549 $menu_item_db_id = wp_insert_post( $post, true, $fire_after_hooks ); 550 if ( ! $menu_item_db_id || is_wp_error( $menu_item_db_id ) ) { 551 return $menu_item_db_id; 552 } 553 554 /** 555 * Fires immediately after a new navigation menu item has been added. 556 * 557 * @since 4.4.0 558 * 559 * @see wp_update_nav_menu_item() 560 * 561 * @param int $menu_id ID of the updated menu. 562 * @param int $menu_item_db_id ID of the new menu item. 563 * @param array $args An array of arguments used to update/add the menu item. 564 */ 565 do_action( 'wp_add_nav_menu_item', $menu_id, $menu_item_db_id, $args ); 566 } 567 568 /* 569 * Associate the menu item with the menu term. 570 * Only set the menu term if it isn't set to avoid unnecessary wp_get_object_terms(). 571 */ 572 if ( $menu_id && ( ! $update || ! is_object_in_term( $menu_item_db_id, 'nav_menu', (int) $menu->term_id ) ) ) { 573 $update_terms = wp_set_object_terms( $menu_item_db_id, array( $menu->term_id ), 'nav_menu' ); 574 if ( is_wp_error( $update_terms ) ) { 575 return $update_terms; 576 } 577 } 578 579 if ( 'custom' === $args['menu-item-type'] ) { 580 $args['menu-item-object-id'] = $menu_item_db_id; 581 $args['menu-item-object'] = 'custom'; 582 } 583 584 $menu_item_db_id = (int) $menu_item_db_id; 585 586 // Reset invalid `menu_item_parent`. 587 if ( (int) $args['menu-item-parent-id'] === $menu_item_db_id ) { 588 $args['menu-item-parent-id'] = 0; 589 } 590 591 update_post_meta( $menu_item_db_id, '_menu_item_type', sanitize_key( $args['menu-item-type'] ) ); 592 update_post_meta( $menu_item_db_id, '_menu_item_menu_item_parent', (string) ( (int) $args['menu-item-parent-id'] ) ); 593 update_post_meta( $menu_item_db_id, '_menu_item_object_id', (string) ( (int) $args['menu-item-object-id'] ) ); 594 update_post_meta( $menu_item_db_id, '_menu_item_object', sanitize_key( $args['menu-item-object'] ) ); 595 update_post_meta( $menu_item_db_id, '_menu_item_target', sanitize_key( $args['menu-item-target'] ) ); 596 597 $args['menu-item-classes'] = array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-classes'] ) ); 598 $args['menu-item-xfn'] = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-xfn'] ) ) ); 599 update_post_meta( $menu_item_db_id, '_menu_item_classes', $args['menu-item-classes'] ); 600 update_post_meta( $menu_item_db_id, '_menu_item_xfn', $args['menu-item-xfn'] ); 601 update_post_meta( $menu_item_db_id, '_menu_item_url', sanitize_url( $args['menu-item-url'] ) ); 602 603 if ( 0 === $menu_id ) { 604 update_post_meta( $menu_item_db_id, '_menu_item_orphaned', (string) time() ); 605 } elseif ( get_post_meta( $menu_item_db_id, '_menu_item_orphaned' ) ) { 606 delete_post_meta( $menu_item_db_id, '_menu_item_orphaned' ); 607 } 608 609 // Update existing menu item. Default is publish status. 610 if ( $update ) { 611 $post['ID'] = $menu_item_db_id; 612 $post['post_status'] = ( 'draft' === $args['menu-item-status'] ) ? 'draft' : 'publish'; 613 614 $update_post = wp_update_post( $post, true ); 615 if ( is_wp_error( $update_post ) ) { 616 return $update_post; 617 } 618 } 619 620 /** 621 * Fires after a navigation menu item has been updated. 622 * 623 * @since 3.0.0 624 * 625 * @see wp_update_nav_menu_item() 626 * 627 * @param int $menu_id ID of the updated menu. 628 * @param int $menu_item_db_id ID of the updated menu item. 629 * @param array $args An array of arguments used to update a menu item. 630 */ 631 do_action( 'wp_update_nav_menu_item', $menu_id, $menu_item_db_id, $args ); 632 633 return $menu_item_db_id; 634 } 635 636 /** 637 * Returns all navigation menu objects. 638 * 639 * @since 3.0.0 640 * @since 4.1.0 Default value of the 'orderby' argument was changed from 'none' 641 * to 'name'. 642 * 643 * @param array $args Optional. Array of arguments passed on to get_terms(). 644 * Default empty array. 645 * @return WP_Term[] An array of menu objects. 646 */ 647 function wp_get_nav_menus( $args = array() ) { 648 $defaults = array( 649 'taxonomy' => 'nav_menu', 650 'hide_empty' => false, 651 'orderby' => 'name', 652 ); 653 $args = wp_parse_args( $args, $defaults ); 654 655 /** 656 * Filters the navigation menu objects being returned. 657 * 658 * @since 3.0.0 659 * 660 * @see get_terms() 661 * 662 * @param WP_Term[] $menus An array of menu objects. 663 * @param array $args An array of arguments used to retrieve menu objects. 664 */ 665 return apply_filters( 'wp_get_nav_menus', get_terms( $args ), $args ); 666 } 667 668 /** 669 * Determines whether a menu item is valid. 670 * 671 * @link https://core.trac.wordpress.org/ticket/13958 672 * 673 * @since 3.2.0 674 * @access private 675 * 676 * @param object $item The menu item to check. 677 * @return bool False if invalid, otherwise true. 678 */ 679 function _is_valid_nav_menu_item( $item ) { 680 return empty( $item->_invalid ); 681 } 682 683 /** 684 * Retrieves all menu items of a navigation menu. 685 * 686 * Note: Most arguments passed to the `$args` parameter – save for 'output_key' – are 687 * specifically for retrieving nav_menu_item posts from get_posts() and may only 688 * indirectly affect the ultimate ordering and content of the resulting nav menu 689 * items that get returned from this function. 690 * 691 * @since 3.0.0 692 * 693 * @param int|string|WP_Term $menu Menu ID, slug, name, or object. 694 * @param array $args { 695 * Optional. Arguments to pass to get_posts(). 696 * 697 * @type string $order How to order nav menu items as queried with get_posts(). 698 * Will be ignored if 'output' is ARRAY_A. Default 'ASC'. 699 * @type string $orderby Field to order menu items by as retrieved from get_posts(). 700 * Supply an orderby field via 'output_key' to affect the 701 * output order of nav menu items. Default 'menu_order'. 702 * @type string $post_type Menu items post type. Default 'nav_menu_item'. 703 * @type string $post_status Menu items post status. Default 'publish'. 704 * @type string $output How to order outputted menu items. Default ARRAY_A. 705 * @type string $output_key Key to use for ordering the actual menu items that get 706 * returned. Note that that is not a get_posts() argument 707 * and will only affect output of menu items processed in 708 * this function. Default 'menu_order'. 709 * @type bool $nopaging Whether to retrieve all menu items (true) or paginate 710 * (false). Default true. 711 * @type bool $update_menu_item_cache Whether to update the menu item cache. Default true. 712 * } 713 * @return array|false Array of menu items, otherwise false. 714 */ 715 function wp_get_nav_menu_items( $menu, $args = array() ) { 716 $menu = wp_get_nav_menu_object( $menu ); 717 718 if ( ! $menu ) { 719 return false; 720 } 721 722 if ( ! taxonomy_exists( 'nav_menu' ) ) { 723 return false; 724 } 725 726 $defaults = array( 727 'order' => 'ASC', 728 'orderby' => 'menu_order', 729 'post_type' => 'nav_menu_item', 730 'post_status' => 'publish', 731 'output' => ARRAY_A, 732 'output_key' => 'menu_order', 733 'nopaging' => true, 734 'update_menu_item_cache' => true, 735 'tax_query' => array( 736 array( 737 'taxonomy' => 'nav_menu', 738 'field' => 'term_taxonomy_id', 739 'terms' => $menu->term_taxonomy_id, 740 ), 741 ), 742 ); 743 $args = wp_parse_args( $args, $defaults ); 744 if ( $menu->count > 0 ) { 745 $items = get_posts( $args ); 746 } else { 747 $items = array(); 748 } 749 750 $items = array_map( 'wp_setup_nav_menu_item', $items ); 751 752 if ( ! is_admin() ) { // Remove invalid items only on front end. 753 $items = array_filter( $items, '_is_valid_nav_menu_item' ); 754 } 755 756 if ( ARRAY_A === $args['output'] ) { 757 $items = wp_list_sort( 758 $items, 759 array( 760 $args['output_key'] => 'ASC', 761 ) 762 ); 763 764 $i = 1; 765 766 foreach ( $items as $k => $item ) { 767 $items[ $k ]->{$args['output_key']} = $i++; 768 } 769 } 770 771 /** 772 * Filters the navigation menu items being returned. 773 * 774 * @since 3.0.0 775 * 776 * @param array $items An array of menu item post objects. 777 * @param object $menu The menu object. 778 * @param array $args An array of arguments used to retrieve menu item objects. 779 */ 780 return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args ); 781 } 782 783 /** 784 * Updates post and term caches for all linked objects for a list of menu items. 785 * 786 * @since 6.1.0 787 * 788 * @param WP_Post[] $menu_items Array of menu item post objects. 789 */ 790 function update_menu_item_cache( $menu_items ) { 791 $post_ids = array(); 792 $term_ids = array(); 793 794 foreach ( $menu_items as $menu_item ) { 795 if ( 'nav_menu_item' !== $menu_item->post_type ) { 796 continue; 797 } 798 799 $object_id = get_post_meta( $menu_item->ID, '_menu_item_object_id', true ); 800 $type = get_post_meta( $menu_item->ID, '_menu_item_type', true ); 801 802 if ( 'post_type' === $type ) { 803 $post_ids[] = (int) $object_id; 804 } elseif ( 'taxonomy' === $type ) { 805 $term_ids[] = (int) $object_id; 806 } 807 } 808 809 if ( ! empty( $post_ids ) ) { 810 _prime_post_caches( $post_ids, false ); 811 } 812 813 if ( ! empty( $term_ids ) ) { 814 _prime_term_caches( $term_ids ); 815 } 816 } 817 818 /** 819 * Decorates a menu item object with the shared navigation menu item properties. 820 * 821 * Properties: 822 * - ID: The term_id if the menu item represents a taxonomy term. 823 * - attr_title: The title attribute of the link element for this menu item. 824 * - classes: The array of class attribute values for the link element of this menu item. 825 * - db_id: The DB ID of this item as a nav_menu_item object, if it exists (0 if it doesn't exist). 826 * - description: The description of this menu item. 827 * - menu_item_parent: The DB ID of the nav_menu_item that is this item's menu parent, if any. 0 otherwise. 828 * - object: The type of object originally represented, such as 'category', 'post', or 'attachment'. 829 * - object_id: The DB ID of the original object this menu item represents, e.g. ID for posts and term_id for categories. 830 * - post_parent: The DB ID of the original object's parent object, if any (0 otherwise). 831 * - post_title: A "no title" label if menu item represents a post that lacks a title. 832 * - target: The target attribute of the link element for this menu item. 833 * - title: The title of this menu item. 834 * - type: The family of objects originally represented, such as 'post_type' or 'taxonomy'. 835 * - type_label: The singular label used to describe this type of menu item. 836 * - url: The URL to which this menu item points. 837 * - xfn: The XFN relationship expressed in the link of this menu item. 838 * - _invalid: Whether the menu item represents an object that no longer exists. 839 * 840 * @since 3.0.0 841 * 842 * @param object $menu_item The menu item to modify. 843 * @return object The menu item with standard menu item properties. 844 */ 845 function wp_setup_nav_menu_item( $menu_item ) { 846 847 /** 848 * Filters whether to short-circuit the wp_setup_nav_menu_item() output. 849 * 850 * Returning a non-null value from the filter will short-circuit wp_setup_nav_menu_item(), 851 * returning that value instead. 852 * 853 * @since 6.3.0 854 * 855 * @param object|null $modified_menu_item Modified menu item. Default null. 856 * @param object $menu_item The menu item to modify. 857 */ 858 $pre_menu_item = apply_filters( 'pre_wp_setup_nav_menu_item', null, $menu_item ); 859 860 if ( null !== $pre_menu_item ) { 861 return $pre_menu_item; 862 } 863 864 if ( isset( $menu_item->post_type ) ) { 865 if ( 'nav_menu_item' === $menu_item->post_type ) { 866 $menu_item->db_id = (int) $menu_item->ID; 867 $menu_item->menu_item_parent = ! isset( $menu_item->menu_item_parent ) ? get_post_meta( $menu_item->ID, '_menu_item_menu_item_parent', true ) : $menu_item->menu_item_parent; 868 $menu_item->object_id = ! isset( $menu_item->object_id ) ? get_post_meta( $menu_item->ID, '_menu_item_object_id', true ) : $menu_item->object_id; 869 $menu_item->object = ! isset( $menu_item->object ) ? get_post_meta( $menu_item->ID, '_menu_item_object', true ) : $menu_item->object; 870 $menu_item->type = ! isset( $menu_item->type ) ? get_post_meta( $menu_item->ID, '_menu_item_type', true ) : $menu_item->type; 871 872 if ( 'post_type' === $menu_item->type ) { 873 $object = get_post_type_object( $menu_item->object ); 874 if ( $object ) { 875 $menu_item->type_label = $object->labels->singular_name; 876 // Denote post states for special pages (only in the admin). 877 if ( function_exists( 'get_post_states' ) ) { 878 $menu_post = get_post( $menu_item->object_id ); 879 $post_states = get_post_states( $menu_post ); 880 if ( $post_states ) { 881 $menu_item->type_label = wp_strip_all_tags( implode( ', ', $post_states ) ); 882 } 883 } 884 } else { 885 $menu_item->type_label = $menu_item->object; 886 $menu_item->_invalid = true; 887 } 888 889 if ( 'trash' === get_post_status( $menu_item->object_id ) ) { 890 $menu_item->_invalid = true; 891 } 892 893 $original_object = get_post( $menu_item->object_id ); 894 895 if ( $original_object ) { 896 $menu_item->url = get_permalink( $original_object->ID ); 897 /** This filter is documented in wp-includes/post-template.php */ 898 $original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID ); 899 } else { 900 $menu_item->url = ''; 901 $original_title = ''; 902 $menu_item->_invalid = true; 903 } 904 905 if ( '' === $original_title ) { 906 /* translators: %d: ID of a post. */ 907 $original_title = sprintf( __( '#%d (no title)' ), $menu_item->object_id ); 908 } 909 910 $menu_item->title = ( '' === $menu_item->post_title ) ? $original_title : $menu_item->post_title; 911 912 } elseif ( 'post_type_archive' === $menu_item->type ) { 913 $object = get_post_type_object( $menu_item->object ); 914 if ( $object ) { 915 $menu_item->title = ( '' === $menu_item->post_title ) ? $object->labels->archives : $menu_item->post_title; 916 $post_type_description = $object->description; 917 } else { 918 $post_type_description = ''; 919 $menu_item->_invalid = true; 920 } 921 922 $menu_item->type_label = __( 'Post Type Archive' ); 923 $post_content = wp_trim_words( $menu_item->post_content, 200 ); 924 $post_type_description = ( '' === $post_content ) ? $post_type_description : $post_content; 925 $menu_item->url = get_post_type_archive_link( $menu_item->object ); 926 927 } elseif ( 'taxonomy' === $menu_item->type ) { 928 $object = get_taxonomy( $menu_item->object ); 929 if ( $object ) { 930 $menu_item->type_label = $object->labels->singular_name; 931 } else { 932 $menu_item->type_label = $menu_item->object; 933 $menu_item->_invalid = true; 934 } 935 936 $original_object = get_term( (int) $menu_item->object_id, $menu_item->object ); 937 938 if ( $original_object && ! is_wp_error( $original_object ) ) { 939 $menu_item->url = get_term_link( (int) $menu_item->object_id, $menu_item->object ); 940 $original_title = $original_object->name; 941 } else { 942 $menu_item->url = ''; 943 $original_title = ''; 944 $menu_item->_invalid = true; 945 } 946 947 if ( '' === $original_title ) { 948 /* translators: %d: ID of a term. */ 949 $original_title = sprintf( __( '#%d (no title)' ), $menu_item->object_id ); 950 } 951 952 $menu_item->title = ( '' === $menu_item->post_title ) ? $original_title : $menu_item->post_title; 953 954 } else { 955 $menu_item->type_label = __( 'Custom Link' ); 956 $menu_item->title = $menu_item->post_title; 957 $menu_item->url = ! isset( $menu_item->url ) ? get_post_meta( $menu_item->ID, '_menu_item_url', true ) : $menu_item->url; 958 } 959 960 $menu_item->target = ! isset( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target; 961 962 /** 963 * Filters a navigation menu item's title attribute. 964 * 965 * @since 3.0.0 966 * 967 * @param string $item_title The menu item title attribute. 968 */ 969 $menu_item->attr_title = ! isset( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title; 970 971 if ( ! isset( $menu_item->description ) ) { 972 /** 973 * Filters a navigation menu item's description. 974 * 975 * @since 3.0.0 976 * 977 * @param string $description The menu item description. 978 */ 979 $menu_item->description = apply_filters( 'nav_menu_description', wp_trim_words( $menu_item->post_content, 200 ) ); 980 } 981 982 $menu_item->classes = ! isset( $menu_item->classes ) ? (array) get_post_meta( $menu_item->ID, '_menu_item_classes', true ) : $menu_item->classes; 983 $menu_item->xfn = ! isset( $menu_item->xfn ) ? get_post_meta( $menu_item->ID, '_menu_item_xfn', true ) : $menu_item->xfn; 984 } else { 985 $menu_item->db_id = 0; 986 $menu_item->menu_item_parent = 0; 987 $menu_item->object_id = (int) $menu_item->ID; 988 $menu_item->type = 'post_type'; 989 990 $object = get_post_type_object( $menu_item->post_type ); 991 $menu_item->object = $object->name; 992 $menu_item->type_label = $object->labels->singular_name; 993 994 if ( '' === $menu_item->post_title ) { 995 /* translators: %d: ID of a post. */ 996 $menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID ); 997 } 998 999 $menu_item->title = $menu_item->post_title; 1000 $menu_item->url = get_permalink( $menu_item->ID ); 1001 $menu_item->target = ''; 1002 1003 /** This filter is documented in wp-includes/nav-menu.php */ 1004 $menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' ); 1005 1006 /** This filter is documented in wp-includes/nav-menu.php */ 1007 $menu_item->description = apply_filters( 'nav_menu_description', '' ); 1008 $menu_item->classes = array(); 1009 $menu_item->xfn = ''; 1010 } 1011 } elseif ( isset( $menu_item->taxonomy ) ) { 1012 $menu_item->ID = $menu_item->term_id; 1013 $menu_item->db_id = 0; 1014 $menu_item->menu_item_parent = 0; 1015 $menu_item->object_id = (int) $menu_item->term_id; 1016 $menu_item->post_parent = (int) $menu_item->parent; 1017 $menu_item->type = 'taxonomy'; 1018 1019 $object = get_taxonomy( $menu_item->taxonomy ); 1020 $menu_item->object = $object->name; 1021 $menu_item->type_label = $object->labels->singular_name; 1022 1023 $menu_item->title = $menu_item->name; 1024 $menu_item->url = get_term_link( $menu_item, $menu_item->taxonomy ); 1025 $menu_item->target = ''; 1026 $menu_item->attr_title = ''; 1027 $menu_item->description = get_term_field( 'description', $menu_item->term_id, $menu_item->taxonomy ); 1028 $menu_item->classes = array(); 1029 $menu_item->xfn = ''; 1030 1031 } 1032 1033 /** 1034 * Filters a navigation menu item object. 1035 * 1036 * @since 3.0.0 1037 * 1038 * @param object $menu_item The menu item object. 1039 */ 1040 return apply_filters( 'wp_setup_nav_menu_item', $menu_item ); 1041 } 1042 1043 /** 1044 * Returns the menu items associated with a particular object. 1045 * 1046 * @since 3.0.0 1047 * 1048 * @param int $object_id Optional. The ID of the original object. Default 0. 1049 * @param string $object_type Optional. The type of object, such as 'post_type' or 'taxonomy'. 1050 * Default 'post_type'. 1051 * @param string $taxonomy Optional. If $object_type is 'taxonomy', $taxonomy is the name 1052 * of the tax that $object_id belongs to. Default empty. 1053 * @return int[] The array of menu item IDs; empty array if none. 1054 */ 1055 function wp_get_associated_nav_menu_items( $object_id = 0, $object_type = 'post_type', $taxonomy = '' ) { 1056 $object_id = (int) $object_id; 1057 $menu_item_ids = array(); 1058 1059 $query = new WP_Query(); 1060 $menu_items = $query->query( 1061 array( 1062 'meta_key' => '_menu_item_object_id', 1063 'meta_value' => $object_id, 1064 'post_status' => 'any', 1065 'post_type' => 'nav_menu_item', 1066 'posts_per_page' => -1, 1067 ) 1068 ); 1069 foreach ( (array) $menu_items as $menu_item ) { 1070 if ( isset( $menu_item->ID ) && is_nav_menu_item( $menu_item->ID ) ) { 1071 $menu_item_type = get_post_meta( $menu_item->ID, '_menu_item_type', true ); 1072 if ( 1073 'post_type' === $object_type && 1074 'post_type' === $menu_item_type 1075 ) { 1076 $menu_item_ids[] = (int) $menu_item->ID; 1077 } elseif ( 1078 'taxonomy' === $object_type && 1079 'taxonomy' === $menu_item_type && 1080 get_post_meta( $menu_item->ID, '_menu_item_object', true ) === $taxonomy 1081 ) { 1082 $menu_item_ids[] = (int) $menu_item->ID; 1083 } 1084 } 1085 } 1086 1087 return array_unique( $menu_item_ids ); 1088 } 1089 1090 /** 1091 * Callback for handling a menu item when its original object is deleted. 1092 * 1093 * @since 3.0.0 1094 * @access private 1095 * 1096 * @param int $object_id The ID of the original object being trashed. 1097 */ 1098 function _wp_delete_post_menu_item( $object_id ) { 1099 $object_id = (int) $object_id; 1100 1101 $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'post_type' ); 1102 1103 foreach ( (array) $menu_item_ids as $menu_item_id ) { 1104 wp_delete_post( $menu_item_id, true ); 1105 } 1106 } 1107 1108 /** 1109 * Serves as a callback for handling a menu item when its original object is deleted. 1110 * 1111 * @since 3.0.0 1112 * @access private 1113 * 1114 * @param int $object_id The ID of the original object being trashed. 1115 * @param int $tt_id Term taxonomy ID. Unused. 1116 * @param string $taxonomy Taxonomy slug. 1117 */ 1118 function _wp_delete_tax_menu_item( $object_id, $tt_id, $taxonomy ) { 1119 $object_id = (int) $object_id; 1120 1121 $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'taxonomy', $taxonomy ); 1122 1123 foreach ( (array) $menu_item_ids as $menu_item_id ) { 1124 wp_delete_post( $menu_item_id, true ); 1125 } 1126 } 1127 1128 /** 1129 * Automatically add newly published page objects to menus with that as an option. 1130 * 1131 * @since 3.0.0 1132 * @access private 1133 * 1134 * @param string $new_status The new status of the post object. 1135 * @param string $old_status The old status of the post object. 1136 * @param WP_Post $post The post object being transitioned from one status to another. 1137 */ 1138 function _wp_auto_add_pages_to_menu( $new_status, $old_status, $post ) { 1139 if ( 'publish' !== $new_status || 'publish' === $old_status || 'page' !== $post->post_type ) { 1140 return; 1141 } 1142 if ( ! empty( $post->post_parent ) ) { 1143 return; 1144 } 1145 $auto_add = get_option( 'nav_menu_options' ); 1146 if ( empty( $auto_add ) || ! is_array( $auto_add ) || ! isset( $auto_add['auto_add'] ) ) { 1147 return; 1148 } 1149 $auto_add = $auto_add['auto_add']; 1150 if ( empty( $auto_add ) || ! is_array( $auto_add ) ) { 1151 return; 1152 } 1153 1154 $args = array( 1155 'menu-item-object-id' => $post->ID, 1156 'menu-item-object' => $post->post_type, 1157 'menu-item-type' => 'post_type', 1158 'menu-item-status' => 'publish', 1159 ); 1160 1161 foreach ( $auto_add as $menu_id ) { 1162 $items = wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) ); 1163 if ( ! is_array( $items ) ) { 1164 continue; 1165 } 1166 foreach ( $items as $item ) { 1167 if ( $post->ID === (int) $item->object_id ) { 1168 continue 2; 1169 } 1170 } 1171 wp_update_nav_menu_item( $menu_id, 0, $args ); 1172 } 1173 } 1174 1175 /** 1176 * Deletes auto-draft posts associated with the supplied changeset. 1177 * 1178 * @since 4.8.0 1179 * @access private 1180 * 1181 * @param int $post_id Post ID for the customize_changeset. 1182 */ 1183 function _wp_delete_customize_changeset_dependent_auto_drafts( $post_id ) { 1184 $post = get_post( $post_id ); 1185 1186 if ( ! $post || 'customize_changeset' !== $post->post_type ) { 1187 return; 1188 } 1189 1190 $data = json_decode( $post->post_content, true ); 1191 if ( empty( $data['nav_menus_created_posts']['value'] ) ) { 1192 return; 1193 } 1194 remove_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' ); 1195 foreach ( $data['nav_menus_created_posts']['value'] as $stub_post_id ) { 1196 if ( empty( $stub_post_id ) ) { 1197 continue; 1198 } 1199 if ( 'auto-draft' === get_post_status( $stub_post_id ) ) { 1200 wp_delete_post( $stub_post_id, true ); 1201 } elseif ( 'draft' === get_post_status( $stub_post_id ) ) { 1202 wp_trash_post( $stub_post_id ); 1203 delete_post_meta( $stub_post_id, '_customize_changeset_uuid' ); 1204 } 1205 } 1206 add_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' ); 1207 } 1208 1209 /** 1210 * Handles menu config after theme change. 1211 * 1212 * @access private 1213 * @since 4.9.0 1214 */ 1215 function _wp_menus_changed() { 1216 $old_nav_menu_locations = get_option( 'theme_switch_menu_locations', array() ); 1217 $new_nav_menu_locations = get_nav_menu_locations(); 1218 $mapped_nav_menu_locations = wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations ); 1219 1220 set_theme_mod( 'nav_menu_locations', $mapped_nav_menu_locations ); 1221 delete_option( 'theme_switch_menu_locations' ); 1222 } 1223 1224 /** 1225 * Maps nav menu locations according to assignments in previously active theme. 1226 * 1227 * @since 4.9.0 1228 * 1229 * @param array $new_nav_menu_locations New nav menu locations assignments. 1230 * @param array $old_nav_menu_locations Old nav menu locations assignments. 1231 * @return array Nav menus mapped to new nav menu locations. 1232 */ 1233 function wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations ) { 1234 $registered_nav_menus = get_registered_nav_menus(); 1235 $new_nav_menu_locations = array_intersect_key( $new_nav_menu_locations, $registered_nav_menus ); 1236 1237 // Short-circuit if there are no old nav menu location assignments to map. 1238 if ( empty( $old_nav_menu_locations ) ) { 1239 return $new_nav_menu_locations; 1240 } 1241 1242 // If old and new theme have just one location, map it and we're done. 1243 if ( 1 === count( $old_nav_menu_locations ) && 1 === count( $registered_nav_menus ) ) { 1244 $new_nav_menu_locations[ key( $registered_nav_menus ) ] = array_pop( $old_nav_menu_locations ); 1245 return $new_nav_menu_locations; 1246 } 1247 1248 $old_locations = array_keys( $old_nav_menu_locations ); 1249 1250 // Map locations with the same slug. 1251 foreach ( $registered_nav_menus as $location => $name ) { 1252 if ( in_array( $location, $old_locations, true ) ) { 1253 $new_nav_menu_locations[ $location ] = $old_nav_menu_locations[ $location ]; 1254 unset( $old_nav_menu_locations[ $location ] ); 1255 } 1256 } 1257 1258 // If there are no old nav menu locations left, then we're done. 1259 if ( empty( $old_nav_menu_locations ) ) { 1260 return $new_nav_menu_locations; 1261 } 1262 1263 /* 1264 * If old and new theme both have locations that contain phrases 1265 * from within the same group, make an educated guess and map it. 1266 */ 1267 $common_slug_groups = array( 1268 array( 'primary', 'menu-1', 'main', 'header', 'navigation', 'top' ), 1269 array( 'secondary', 'menu-2', 'footer', 'subsidiary', 'bottom' ), 1270 array( 'social' ), 1271 ); 1272 1273 // Go through each group... 1274 foreach ( $common_slug_groups as $slug_group ) { 1275 1276 // ...and see if any of these slugs... 1277 foreach ( $slug_group as $slug ) { 1278 1279 // ...and any of the new menu locations... 1280 foreach ( $registered_nav_menus as $new_location => $name ) { 1281 1282 // ...actually match! 1283 if ( is_string( $new_location ) && false === stripos( $new_location, $slug ) && false === stripos( $slug, $new_location ) ) { 1284 continue; 1285 } elseif ( is_numeric( $new_location ) && $new_location !== $slug ) { 1286 continue; 1287 } 1288 1289 // Then see if any of the old locations... 1290 foreach ( $old_nav_menu_locations as $location => $menu_id ) { 1291 1292 // ...and any slug in the same group... 1293 foreach ( $slug_group as $slug ) { 1294 1295 // ... have a match as well. 1296 if ( is_string( $location ) && false === stripos( $location, $slug ) && false === stripos( $slug, $location ) ) { 1297 continue; 1298 } elseif ( is_numeric( $location ) && $location !== $slug ) { 1299 continue; 1300 } 1301 1302 // Make sure this location wasn't mapped and removed previously. 1303 if ( ! empty( $old_nav_menu_locations[ $location ] ) ) { 1304 1305 // We have a match that can be mapped! 1306 $new_nav_menu_locations[ $new_location ] = $old_nav_menu_locations[ $location ]; 1307 1308 // Remove the mapped location so it can't be mapped again. 1309 unset( $old_nav_menu_locations[ $location ] ); 1310 1311 // Go back and check the next new menu location. 1312 continue 3; 1313 } 1314 } // End foreach ( $slug_group as $slug ). 1315 } // End foreach ( $old_nav_menu_locations as $location => $menu_id ). 1316 } // End foreach foreach ( $registered_nav_menus as $new_location => $name ). 1317 } // End foreach ( $slug_group as $slug ). 1318 } // End foreach ( $common_slug_groups as $slug_group ). 1319 1320 return $new_nav_menu_locations; 1321 } 1322 1323 /** 1324 * Prevents menu items from being their own parent. 1325 * 1326 * Resets menu_item_parent to 0 when the parent is set to the item itself. 1327 * For use before saving `_menu_item_menu_item_parent` in nav-menus.php. 1328 * 1329 * @since 6.2.0 1330 * @access private 1331 * 1332 * @param array $menu_item_data The menu item data array. 1333 * @return array The menu item data with reset menu_item_parent. 1334 */ 1335 function _wp_reset_invalid_menu_item_parent( $menu_item_data ) { 1336 if ( ! is_array( $menu_item_data ) ) { 1337 return $menu_item_data; 1338 } 1339 1340 if ( 1341 ! empty( $menu_item_data['ID'] ) && 1342 ! empty( $menu_item_data['menu_item_parent'] ) && 1343 (int) $menu_item_data['ID'] === (int) $menu_item_data['menu_item_parent'] 1344 ) { 1345 $menu_item_data['menu_item_parent'] = 0; 1346 } 1347 1348 return $menu_item_data; 1349 }
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