| | 1 | <?php |
| | 2 | /** |
| | 3 | * Taxonomy API: WP_Term_Query class |
| | 4 | * |
| | 5 | * @package WordPress |
| | 6 | * @subpackage Taxonomy |
| | 7 | * @since 4.6.0 |
| | 8 | */ |
| | 9 | |
| | 10 | /** |
| | 11 | * Core class used for querying terms. |
| | 12 | * |
| | 13 | * @since 4.6.0 |
| | 14 | * |
| | 15 | * @see WP_Term_Query::__construct() for accepted arguments. |
| | 16 | */ |
| | 17 | class WP_Term_Query { |
| | 18 | |
| | 19 | /** |
| | 20 | * SQL for database query. |
| | 21 | * |
| | 22 | * @since 4.6.0 |
| | 23 | * @access public |
| | 24 | * @var string |
| | 25 | */ |
| | 26 | public $request; |
| | 27 | |
| | 28 | /** |
| | 29 | * Metadata query container |
| | 30 | * |
| | 31 | * @since 4.6.0 |
| | 32 | * @access public |
| | 33 | * @var object WP_Meta_Query |
| | 34 | */ |
| | 35 | public $meta_query = false; |
| | 36 | |
| | 37 | /** |
| | 38 | * Metadata query clauses. |
| | 39 | * |
| | 40 | * @since 4.6.0 |
| | 41 | * @access protected |
| | 42 | * @var array |
| | 43 | */ |
| | 44 | protected $meta_query_clauses; |
| | 45 | |
| | 46 | /** |
| | 47 | * SQL query clauses. |
| | 48 | * |
| | 49 | * @since 4.6.0 |
| | 50 | * @access protected |
| | 51 | * @var array |
| | 52 | */ |
| | 53 | protected $sql_clauses = array( |
| | 54 | 'select' => '', |
| | 55 | 'from' => '', |
| | 56 | 'where' => array(), |
| | 57 | 'orderby' => '', |
| | 58 | 'limits' => '', |
| | 59 | ); |
| | 60 | |
| | 61 | /** |
| | 62 | * Query vars set by the user. |
| | 63 | * |
| | 64 | * @since 4.6.0 |
| | 65 | * @access public |
| | 66 | * @var array |
| | 67 | */ |
| | 68 | public $query_vars; |
| | 69 | |
| | 70 | /** |
| | 71 | * Default values for query vars. |
| | 72 | * |
| | 73 | * @since 4.6.0 |
| | 74 | * @access public |
| | 75 | * @var array |
| | 76 | */ |
| | 77 | public $query_var_defaults; |
| | 78 | |
| | 79 | /** |
| | 80 | * List of terms located by the query. |
| | 81 | * |
| | 82 | * @since 4.6.0 |
| | 83 | * @access public |
| | 84 | * @var array |
| | 85 | */ |
| | 86 | public $terms; |
| | 87 | |
| | 88 | /** |
| | 89 | * The amount of found terms for the current query. |
| | 90 | * |
| | 91 | * @since 4.6.0 |
| | 92 | * @access public |
| | 93 | * @var int |
| | 94 | */ |
| | 95 | public $found_terms = 0; |
| | 96 | |
| | 97 | /** |
| | 98 | * The number of pages. |
| | 99 | * |
| | 100 | * @since 4.6.0 |
| | 101 | * @access public |
| | 102 | * @var int |
| | 103 | */ |
| | 104 | public $max_num_pages = 0; |
| | 105 | |
| | 106 | /** |
| | 107 | * Constructor. |
| | 108 | * |
| | 109 | * Sets up the term query, based on the query vars passed. |
| | 110 | * |
| | 111 | * @since 4.6.0 |
| | 112 | * @access public |
| | 113 | * |
| | 114 | * @param string|array $query { |
| | 115 | * Optional. Array or query string of term query parameters. Default empty. |
| | 116 | * |
| | 117 | * @type string|array $taxonomy Taxonomy name, or array of taxonomies, to which results should |
| | 118 | * be limited. |
| | 119 | * @type string $orderby Field(s) to order terms by. Accepts term fields ('name', 'slug', |
| | 120 | * 'term_group', 'term_id', 'id', 'description'), 'count' for term |
| | 121 | * taxonomy count, 'include' to match the 'order' of the $include param, |
| | 122 | * 'meta_value', 'meta_value_num', the value of `$meta_key`, the array |
| | 123 | * keys of `$meta_query`, or 'none' to omit the ORDER BY clause. |
| | 124 | * Defaults to 'name'. |
| | 125 | * @type string $order Whether to order terms in ascending or descending order. |
| | 126 | * Accepts 'ASC' (ascending) or 'DESC' (descending). |
| | 127 | * Default 'ASC'. |
| | 128 | * @type bool|int $hide_empty Whether to hide terms not assigned to any posts. Accepts |
| | 129 | * 1|true or 0|false. Default 1|true. |
| | 130 | * @type array|string $include Array or comma/space-separated string of term ids to include. |
| | 131 | * Default empty array. |
| | 132 | * @type array|string $exclude Array or comma/space-separated string of term ids to exclude. |
| | 133 | * If $include is non-empty, $exclude is ignored. |
| | 134 | * Default empty array. |
| | 135 | * @type array|string $exclude_tree Array or comma/space-separated string of term ids to exclude |
| | 136 | * along with all of their descendant terms. If $include is |
| | 137 | * non-empty, $exclude_tree is ignored. Default empty array. |
| | 138 | * @type int|string $number Maximum number of terms to return. Accepts ''|0 (all) or any |
| | 139 | * positive number. Default ''|0 (all). |
| | 140 | * @type int $offset The number by which to offset the terms query. Default empty. |
| | 141 | * @type bool $no_found_rows Whether to disable the `SQL_CALC_FOUND_ROWS` query. |
| | 142 | * Default: true. |
| | 143 | * @type string $fields Term fields to query for. Accepts 'all' (returns an array of complete |
| | 144 | * term objects), 'ids' (returns an array of ids), 'id=>parent' (returns |
| | 145 | * an associative array with ids as keys, parent term IDs as values), |
| | 146 | * 'names' (returns an array of term names), 'count' (returns the number |
| | 147 | * of matching terms), 'id=>name' (returns an associative array with ids |
| | 148 | * as keys, term names as values), or 'id=>slug' (returns an associative |
| | 149 | * array with ids as keys, term slugs as values). Default 'all'. |
| | 150 | * @type bool $count Whether to return a term count (true) or array of term objects (false). |
| | 151 | * Will take precedence over `$fields` if true. Default false. |
| | 152 | * @type string|array $name Optional. Name or array of names to return term(s) for. Default empty. |
| | 153 | * @type string|array $slug Optional. Slug or array of slugs to return term(s) for. Default empty. |
| | 154 | * @type bool $hierarchical Whether to include terms that have non-empty descendants (even |
| | 155 | * if $hide_empty is set to true). Default true. |
| | 156 | * @type string $search Search criteria to match terms. Will be SQL-formatted with |
| | 157 | * wildcards before and after. Default empty. |
| | 158 | * @type string $name__like Retrieve terms with criteria by which a term is LIKE $name__like. |
| | 159 | * Default empty. |
| | 160 | * @type string $description__like Retrieve terms where the description is LIKE $description__like. |
| | 161 | * Default empty. |
| | 162 | * @type bool $pad_counts Whether to pad the quantity of a term's children in the quantity |
| | 163 | * of each term's "count" object variable. Default false. |
| | 164 | * @type string $get Whether to return terms regardless of ancestry or whether the terms |
| | 165 | * are empty. Accepts 'all' or empty (disabled). Default empty. |
| | 166 | * @type int $child_of Term ID to retrieve child terms of. If multiple taxonomies |
| | 167 | * are passed, $child_of is ignored. Default 0. |
| | 168 | * @type int|string $parent Parent term ID to retrieve direct-child terms of. Default empty. |
| | 169 | * @type bool $childless True to limit results to terms that have no children. This parameter |
| | 170 | * has no effect on non-hierarchical taxonomies. Default false. |
| | 171 | * @type bool $suppress_filters Whether to suppress filters. Default false. |
| | 172 | * @type string $cache_domain Unique cache key to be produced when this query is stored in an |
| | 173 | * object cache. Default is 'core'. |
| | 174 | * @type bool $update_term_meta_cache Whether to prime meta caches for matched terms. Default true. |
| | 175 | * @type array $meta_query Meta query clauses to limit retrieved terms by. |
| | 176 | * See `WP_Meta_Query`. Default empty. |
| | 177 | * @type string $meta_key Limit terms to those matching a specific metadata key. Can be used in |
| | 178 | * conjunction with `$meta_value`. |
| | 179 | * @type string $meta_value Limit terms to those matching a specific metadata value. Usually used |
| | 180 | * in conjunction with `$meta_key`. |
| | 181 | * } |
| | 182 | */ |
| | 183 | public function __construct( $query = '' ) { |
| | 184 | $this->query_var_defaults = array( |
| | 185 | 'taxonomy' => null, |
| | 186 | 'orderby' => 'name', |
| | 187 | 'order' => 'ASC', |
| | 188 | 'hide_empty' => true, |
| | 189 | 'include' => array(), |
| | 190 | 'exclude' => array(), |
| | 191 | 'exclude_tree' => array(), |
| | 192 | 'number' => '', |
| | 193 | 'offset' => '', |
| | 194 | 'no_found_rows' => true, |
| | 195 | 'fields' => 'all', |
| | 196 | 'count' => false, |
| | 197 | 'name' => '', |
| | 198 | 'slug' => '', |
| | 199 | 'hierarchical' => true, |
| | 200 | 'search' => '', |
| | 201 | 'name__like' => '', |
| | 202 | 'description__like' => '', |
| | 203 | 'pad_counts' => false, |
| | 204 | 'get' => '', |
| | 205 | 'child_of' => 0, |
| | 206 | 'parent' => '', |
| | 207 | 'childless' => false, |
| | 208 | 'suppress_filters' => false, |
| | 209 | 'cache_domain' => 'core', |
| | 210 | 'update_term_meta_cache' => true, |
| | 211 | 'meta_query' => '' |
| | 212 | ); |
| | 213 | |
| | 214 | if ( ! empty( $query ) ) { |
| | 215 | $this->query( $query ); |
| | 216 | } |
| | 217 | } |
| | 218 | |
| | 219 | /** |
| | 220 | * Parse arguments passed to the term query with default query parameters. |
| | 221 | * |
| | 222 | * @since 4.6.0 |
| | 223 | * @access public |
| | 224 | * |
| | 225 | * @param string|array $query WP_Term_Query arguments. See WP_Term_Query::__construct() |
| | 226 | */ |
| | 227 | public function parse_query( $query = '' ) { |
| | 228 | if ( empty( $query ) ) { |
| | 229 | $query = $this->query_vars; |
| | 230 | } |
| | 231 | |
| | 232 | $taxonomies = isset( $query['taxonomy'] ) ? $query['taxonomy'] : null; |
| | 233 | |
| | 234 | /** |
| | 235 | * Filter the terms query default arguments. |
| | 236 | * |
| | 237 | * Use 'get_terms_args' to filter the passed arguments. |
| | 238 | * |
| | 239 | * @since 4.4.0 |
| | 240 | * |
| | 241 | * @param array $defaults An array of default get_terms() arguments. |
| | 242 | * @param array $taxonomies An array of taxonomies. |
| | 243 | */ |
| | 244 | $this->query_var_defaults = apply_filters( 'get_terms_defaults', $this->query_var_defaults, $taxonomies ); |
| | 245 | |
| | 246 | $query = wp_parse_args( $query, $this->query_var_defaults ); |
| | 247 | |
| | 248 | $query['number'] = absint( $query['number'] ); |
| | 249 | $query['offset'] = absint( $query['offset'] ); |
| | 250 | |
| | 251 | // 'parent' overrides 'child_of'. |
| | 252 | if ( 0 < intval( $query['parent'] ) ) { |
| | 253 | $query['child_of'] = false; |
| | 254 | } |
| | 255 | |
| | 256 | if ( 'all' == $query['get'] ) { |
| | 257 | $query['childless'] = false; |
| | 258 | $query['child_of'] = 0; |
| | 259 | $query['hide_empty'] = 0; |
| | 260 | $query['hierarchical'] = false; |
| | 261 | $query['pad_counts'] = false; |
| | 262 | } |
| | 263 | |
| | 264 | /** |
| | 265 | * Filter the terms query arguments. |
| | 266 | * |
| | 267 | * @since 3.1.0 |
| | 268 | * |
| | 269 | * @param array $args An array of get_terms() arguments. |
| | 270 | * @param array $taxonomies An array of taxonomies. |
| | 271 | */ |
| | 272 | $this->query_vars = apply_filters( 'get_terms_args', $query, $taxonomies ); |
| | 273 | |
| | 274 | /** |
| | 275 | * Fires after term query vars have been parsed. |
| | 276 | * |
| | 277 | * @since 4.6.0 |
| | 278 | * |
| | 279 | * @param WP_Term_Query &$this Current instance of WP_Term_Query, passed by reference. |
| | 280 | */ |
| | 281 | do_action_ref_array( 'parse_term_query', array( &$this ) ); |
| | 282 | } |
| | 283 | |
| | 284 | /** |
| | 285 | * Sets up the query for retrieving terms. |
| | 286 | * |
| | 287 | * @since 4.6.0 |
| | 288 | * @access public |
| | 289 | * |
| | 290 | * @param string|array $query Array or URL query string of parameters. |
| | 291 | * @return array|int List of terms, or number of terms when 'count' is passed as a query var. |
| | 292 | */ |
| | 293 | public function query( $query ) { |
| | 294 | $this->query_vars = wp_parse_args( $query ); |
| | 295 | return $this->get_terms(); |
| | 296 | } |
| | 297 | |
| | 298 | /** |
| | 299 | * Get a list of terms matching the query vars. |
| | 300 | * |
| | 301 | * @since 4.6.0 |
| | 302 | * @access public |
| | 303 | * |
| | 304 | * @global wpdb $wpdb WordPress database abstraction object. |
| | 305 | * |
| | 306 | * @return int|array The list of terms. |
| | 307 | */ |
| | 308 | public function get_terms() { |
| | 309 | global $wpdb; |
| | 310 | |
| | 311 | $this->parse_query(); |
| | 312 | |
| | 313 | // Parse meta query |
| | 314 | $this->meta_query = new WP_Meta_Query(); |
| | 315 | $this->meta_query->parse_query_vars( $this->query_vars ); |
| | 316 | |
| | 317 | /** |
| | 318 | * Fires before terms are retrieved. |
| | 319 | * |
| | 320 | * @since 4.6.0 |
| | 321 | * |
| | 322 | * @param WP_Term_Query &$this Current instance of WP_Term_Query, passed by reference. |
| | 323 | */ |
| | 324 | do_action_ref_array( 'pre_get_terms', array( &$this ) ); |
| | 325 | |
| | 326 | // Reparse query vars, in case they were modified in a 'pre_get_terms' callback. |
| | 327 | $this->meta_query->parse_query_vars( $this->query_vars ); |
| | 328 | if ( ! empty( $this->meta_query->queries ) ) { |
| | 329 | $this->meta_query_clauses = $this->meta_query->get_sql( 'term', 't', 'term_id', $this ); |
| | 330 | } |
| | 331 | |
| | 332 | // $args can include anything. Only use the args defined in the query_var_defaults to compute the key. |
| | 333 | $key = md5( serialize( wp_array_slice_assoc( $this->query_vars, array_keys( $this->query_var_defaults ) ) ) ); |
| | 334 | $last_changed = wp_cache_get( 'last_changed', 'terms' ); |
| | 335 | if ( ! $last_changed ) { |
| | 336 | $last_changed = microtime(); |
| | 337 | wp_cache_set( 'last_changed', $last_changed, 'terms' ); |
| | 338 | } |
| | 339 | $cache_key = "get_term_ids:$key:$last_changed"; |
| | 340 | |
| | 341 | $term_ids = wp_cache_get( $cache_key, 'term' ); |
| | 342 | if ( false === $term_ids ) { |
| | 343 | $term_ids = $this->get_term_ids(); |
| | 344 | wp_cache_add( $cache_key, $term_ids, 'term' ); |
| | 345 | } |
| | 346 | |
| | 347 | // If querying for a count only, there's nothing more to do. |
| | 348 | if ( $this->query_vars['count'] || 'count' === $this->query_vars['fields'] ) { |
| | 349 | // $term_ids is actually a count in this case. |
| | 350 | return intval( $term_ids ); |
| | 351 | } |
| | 352 | |
| | 353 | $term_ids = array_map( 'intval', $term_ids ); |
| | 354 | |
| | 355 | $this->term_count = count( $this->terms ); |
| | 356 | |
| | 357 | if ( $term_ids && $this->query_vars['number'] && ! $this->query_vars['no_found_rows'] ) { |
| | 358 | /** |
| | 359 | * Filter the query used to retrieve found term count. |
| | 360 | * |
| | 361 | * @since 4.6.0 |
| | 362 | * |
| | 363 | * @param string $found_terms_query SQL query. Default 'SELECT FOUND_ROWS()'. |
| | 364 | * @param WP_Term_Query $term_query The `WP_Term_Query` instance. |
| | 365 | */ |
| | 366 | $found_terms_query = apply_filters( 'found_terms_query', 'SELECT FOUND_ROWS()', $this ); |
| | 367 | $this->found_terms = (int) $wpdb->get_var( $found_terms_query ); |
| | 368 | |
| | 369 | $this->max_num_pages = ceil( $this->found_terms / $this->query_vars['number'] ); |
| | 370 | } |
| | 371 | |
| | 372 | if ( 'ids' == $this->query_vars['fields'] ) { |
| | 373 | $this->terms = $term_ids; |
| | 374 | return $this->terms; |
| | 375 | } |
| | 376 | |
| | 377 | _prime_term_caches( $term_ids, $this->query_vars['update_term_meta_cache'] ); |
| | 378 | |
| | 379 | // Fetch full term objects from the primed cache. |
| | 380 | $_terms = array(); |
| | 381 | foreach ( $term_ids as $term_id ) { |
| | 382 | if ( $_term = get_term( $term_id ) ) { |
| | 383 | $_terms[] = $_term; |
| | 384 | } |
| | 385 | } |
| | 386 | |
| | 387 | if ( ! $this->query_vars['suppress_filters'] ) { |
| | 388 | /** |
| | 389 | * Filter the term query results. |
| | 390 | * |
| | 391 | * @since 4.6.0 |
| | 392 | * |
| | 393 | * @param array $results An array of terms. |
| | 394 | * @param WP_Term_Query &$this Current instance of WP_Term_Query, passed by reference. |
| | 395 | */ |
| | 396 | $_terms = apply_filters_ref_array( 'the_terms', array( $_terms, &$this ) ); |
| | 397 | } |
| | 398 | |
| | 399 | // Convert to WP_Term instances |
| | 400 | $terms = array_map( 'get_term', $_terms ); |
| | 401 | |
| | 402 | if ( $this->query_vars['child_of'] && $this->query_vars['taxonomy'] ) { |
| | 403 | foreach ( $this->query_vars['taxonomy'] as $_tax ) { |
| | 404 | $children = _get_term_hierarchy( $_tax ); |
| | 405 | if ( ! empty( $children ) ) { |
| | 406 | $terms = _get_term_children( $this->query_vars['child_of'], $terms, $_tax ); |
| | 407 | } |
| | 408 | } |
| | 409 | } |
| | 410 | |
| | 411 | // Update term counts to include children. |
| | 412 | if ( $this->query_vars['pad_counts'] && 'all' == $_fields && $this->query_vars['taxonomy'] ) { |
| | 413 | foreach ( $this->query_vars['taxonomy'] as $_tax ) { |
| | 414 | _pad_term_counts( $terms, $_tax ); |
| | 415 | } |
| | 416 | } |
| | 417 | |
| | 418 | // Make sure we show empty categories that have children. |
| | 419 | if ( $this->query_vars['hierarchical'] && $this->query_vars['hide_empty'] && is_array( $terms ) ) { |
| | 420 | foreach ( $terms as $k => $term ) { |
| | 421 | if ( ! $term->count ) { |
| | 422 | $children = get_term_children( $term->term_id, $term->taxonomy ); |
| | 423 | if ( is_array( $children ) ) { |
| | 424 | foreach ( $children as $child_id ) { |
| | 425 | $child = get_term( $child_id, $term->taxonomy ); |
| | 426 | if ( $child->count ) { |
| | 427 | continue 2; |
| | 428 | } |
| | 429 | } |
| | 430 | } |
| | 431 | |
| | 432 | // It really is empty. |
| | 433 | unset( $terms[ $k ] ); |
| | 434 | } |
| | 435 | } |
| | 436 | } |
| | 437 | |
| | 438 | $_terms = array(); |
| | 439 | if ( 'id=>parent' == $this->query_vars['fields'] ) { |
| | 440 | foreach ( $terms as $term ) { |
| | 441 | $_terms[ $term->term_id ] = $term->parent; |
| | 442 | } |
| | 443 | } elseif ( 'ids' == $this->query_vars['fields'] ) { |
| | 444 | foreach ( $terms as $term ) { |
| | 445 | $_terms[] = $term->term_id; |
| | 446 | } |
| | 447 | } elseif ( 'names' == $this->query_vars['fields'] ) { |
| | 448 | foreach ( $terms as $term ) { |
| | 449 | $_terms[] = $term->name; |
| | 450 | } |
| | 451 | } elseif ( 'id=>name' == $this->query_vars['fields'] ) { |
| | 452 | foreach ( $terms as $term ) { |
| | 453 | $_terms[ $term->term_id ] = $term->name; |
| | 454 | } |
| | 455 | } elseif ( 'id=>slug' == $this->query_vars['fields'] ) { |
| | 456 | foreach ( $terms as $term ) { |
| | 457 | $_terms[ $term->term_id ] = $term->slug; |
| | 458 | } |
| | 459 | } |
| | 460 | |
| | 461 | if ( ! empty( $_terms ) ) { |
| | 462 | $terms = $_terms; |
| | 463 | } |
| | 464 | |
| | 465 | // Hierarchical queries are not limited, so 'offset' and 'number' must be handled now. |
| | 466 | if ( $this->query_vars['hierarchical'] && $this->query_vars['number'] ) { |
| | 467 | if ( $this->query_vars['offset'] >= count( $terms ) ) { |
| | 468 | $terms = array(); |
| | 469 | } else { |
| | 470 | $terms = array_slice( $terms, $this->query_vars['offset'], $this->query_vars['number'], true ); |
| | 471 | } |
| | 472 | } |
| | 473 | |
| | 474 | if ( 'all' === $this->query_vars['fields'] ) { |
| | 475 | $terms = array_map( 'get_term', $terms ); |
| | 476 | } |
| | 477 | |
| | 478 | $this->terms = $terms; |
| | 479 | |
| | 480 | /** |
| | 481 | * Filter the given taxonomy's terms. |
| | 482 | * |
| | 483 | * @since 2.3.0 |
| | 484 | * |
| | 485 | * @param array $terms Array of terms for the given taxonomy. |
| | 486 | * @param array $taxonomies An array of taxonomies. |
| | 487 | * @param array $args An array of get_terms() arguments. |
| | 488 | */ |
| | 489 | return apply_filters( 'get_terms', $this->terms, $this->query_vars['taxonomy'], $this->query_vars ); |
| | 490 | } |
| | 491 | |
| | 492 | /** |
| | 493 | * Used internally to get a list of term IDs matching the query vars. |
| | 494 | * |
| | 495 | * @since 4.6.0 |
| | 496 | * @access protected |
| | 497 | * |
| | 498 | * @global wpdb $wpdb WordPress database abstraction object. |
| | 499 | */ |
| | 500 | protected function get_term_ids() { |
| | 501 | global $wpdb; |
| | 502 | |
| | 503 | // Avoid the query if the queried parent/child_of term has no descendants. |
| | 504 | $child_of = $this->query_vars['child_of']; |
| | 505 | $parent = $this->query_vars['parent']; |
| | 506 | |
| | 507 | if ( $child_of ) { |
| | 508 | $_parent = $child_of; |
| | 509 | } elseif ( $parent ) { |
| | 510 | $_parent = $parent; |
| | 511 | } else { |
| | 512 | $_parent = false; |
| | 513 | } |
| | 514 | |
| | 515 | if ( $_parent ) { |
| | 516 | $in_hierarchy = false; |
| | 517 | if ( $this->query_vars['taxonomy'] ) { |
| | 518 | foreach ( $this->query_vars['taxonomy'] as $_tax ) { |
| | 519 | $hierarchy = _get_term_hierarchy( $_tax ); |
| | 520 | |
| | 521 | if ( isset( $hierarchy[ $_parent ] ) ) { |
| | 522 | $in_hierarchy = true; |
| | 523 | } |
| | 524 | } |
| | 525 | } |
| | 526 | |
| | 527 | if ( ! $in_hierarchy ) { |
| | 528 | return array(); |
| | 529 | } |
| | 530 | } |
| | 531 | |
| | 532 | $orderby = $this->parse_orderby( $this->query_vars['orderby'] ); |
| | 533 | $order = $this->parse_order( $this->query_vars['order'] ); |
| | 534 | |
| | 535 | if ( ! empty( $orderby ) && ! $this->query_vars['count'] && 'count' !== $this->query_vars['fields'] ) { |
| | 536 | $orderby = "ORDER BY $orderby"; |
| | 537 | } else { |
| | 538 | $orderby = ''; |
| | 539 | } |
| | 540 | |
| | 541 | if ( $this->query_vars['taxonomy'] ) { |
| | 542 | $this->sql_clauses['where']['taxonomy'] = "tt.taxonomy IN ('" . implode("', '", array_map( 'esc_sql', $this->query_vars['taxonomy'] ) ) . "')"; |
| | 543 | } |
| | 544 | |
| | 545 | $exclude = $this->query_vars['exclude']; |
| | 546 | $exclude_tree = $this->query_vars['exclude_tree']; |
| | 547 | $include = $this->query_vars['include']; |
| | 548 | |
| | 549 | $inclusions = ''; |
| | 550 | if ( ! empty( $include ) ) { |
| | 551 | $exclude = ''; |
| | 552 | $exclude_tree = ''; |
| | 553 | $inclusions = implode( ',', wp_parse_id_list( $include ) ); |
| | 554 | } |
| | 555 | |
| | 556 | if ( ! empty( $inclusions ) ) { |
| | 557 | $this->sql_clauses['where']['include'] = 't.term_id IN ( ' . $inclusions . ' )'; |
| | 558 | } |
| | 559 | |
| | 560 | $exclusions = array(); |
| | 561 | if ( ! empty( $exclude_tree ) ) { |
| | 562 | $exclude_tree = wp_parse_id_list( $exclude_tree ); |
| | 563 | $excluded_children = $exclude_tree; |
| | 564 | foreach ( $exclude_tree as $extrunk ) { |
| | 565 | $excluded_children = array_merge( |
| | 566 | $excluded_children, |
| | 567 | (array) get_terms( $this->query_vars['taxonomy'][0], array( 'child_of' => intval( $extrunk ), 'fields' => 'ids', 'hide_empty' => 0 ) ) |
| | 568 | ); |
| | 569 | } |
| | 570 | $exclusions = array_merge( $excluded_children, $exclusions ); |
| | 571 | } |
| | 572 | |
| | 573 | if ( ! empty( $exclude ) ) { |
| | 574 | $exclusions = array_merge( wp_parse_id_list( $exclude ), $exclusions ); |
| | 575 | } |
| | 576 | |
| | 577 | // 'childless' terms are those without an entry in the flattened term hierarchy. |
| | 578 | $childless = (bool) $this->query_vars['childless']; |
| | 579 | if ( $childless && $this->query_vars['taxonomy'] ) { |
| | 580 | foreach ( $this->query_vars['taxonomy'] as $_tax ) { |
| | 581 | $term_hierarchy = _get_term_hierarchy( $_tax ); |
| | 582 | $exclusions = array_merge( array_keys( $term_hierarchy ), $exclusions ); |
| | 583 | } |
| | 584 | } |
| | 585 | |
| | 586 | if ( ! empty( $exclusions ) ) { |
| | 587 | $exclusions = 't.term_id NOT IN (' . implode( ',', array_map( 'intval', $exclusions ) ) . ')'; |
| | 588 | } else { |
| | 589 | $exclusions = ''; |
| | 590 | } |
| | 591 | |
| | 592 | /** |
| | 593 | * Filter the terms to exclude from the terms query. |
| | 594 | * |
| | 595 | * @since 2.3.0 |
| | 596 | * |
| | 597 | * @param string $exclusions `NOT IN` clause of the terms query. |
| | 598 | * @param array $args An array of terms query arguments. |
| | 599 | * @param array $taxonomies An array of taxonomies. |
| | 600 | */ |
| | 601 | $exclusions = apply_filters( 'list_terms_exclusions', $exclusions, $this->query_vars, $this->query_vars['taxonomy'] ); |
| | 602 | |
| | 603 | if ( ! empty( $exclusions ) ) { |
| | 604 | // Must do string manipulation here for backward compatibility with filter. |
| | 605 | $this->sql_clauses['where']['exclude'] = preg_replace( '/^\s*AND\s*/', '', $exclusions ); |
| | 606 | } |
| | 607 | |
| | 608 | if ( ! empty( $this->query_vars['name'] ) ) { |
| | 609 | $names = (array) $this->query_vars['name']; |
| | 610 | foreach ( $names as &$_name ) { |
| | 611 | // `sanitize_term_field()` returns slashed data. |
| | 612 | $_name = stripslashes( sanitize_term_field( 'name', $_name, 0, reset( $this->query_vars['taxonomy'] ), 'db' ) ); |
| | 613 | } |
| | 614 | |
| | 615 | $this->sql_clauses['where']['name'] = "t.name IN ('" . implode( "', '", array_map( 'esc_sql', $names ) ) . "')"; |
| | 616 | } |
| | 617 | |
| | 618 | if ( ! empty( $this->query_vars['slug'] ) ) { |
| | 619 | if ( is_array( $this->query_vars['slug'] ) ) { |
| | 620 | $slug = array_map( 'sanitize_title', $this->query_vars['slug'] ); |
| | 621 | $this->sql_clauses['where']['slug'] = "t.slug IN ('" . implode( "', '", $slug ) . "')"; |
| | 622 | } else { |
| | 623 | $slug = sanitize_title( $this->query_vars['slug'] ); |
| | 624 | $this->sql_clauses['where']['slug'] = "t.slug = '$slug'"; |
| | 625 | } |
| | 626 | } |
| | 627 | |
| | 628 | if ( ! empty( $this->query_vars['name__like'] ) ) { |
| | 629 | $this->sql_clauses['where']['name__like'] = $wpdb->prepare( "t.name LIKE %s", '%' . $wpdb->esc_like( $this->query_vars['name__like'] ) . '%' ); |
| | 630 | } |
| | 631 | |
| | 632 | if ( ! empty( $this->query_vars['description__like'] ) ) { |
| | 633 | $this->sql_clauses['where']['description__like'] = $wpdb->prepare( "tt.description LIKE %s", '%' . $wpdb->esc_like( $this->query_vars['description__like'] ) . '%' ); |
| | 634 | } |
| | 635 | |
| | 636 | if ( '' !== $parent ) { |
| | 637 | $parent = (int) $parent; |
| | 638 | $this->sql_clauses['where']['parent'] = "tt.parent = '$parent'"; |
| | 639 | } |
| | 640 | |
| | 641 | $hierarchical = $this->query_vars['hierarchical']; |
| | 642 | if ( $this->query_vars['count'] || 'count' === $this->query_vars['fields'] ) { |
| | 643 | $hierarchical = false; |
| | 644 | } |
| | 645 | if ( $this->query_vars['hide_empty'] && !$hierarchical ) { |
| | 646 | $this->sql_clauses['where']['hide_empty'] = 'tt.count > 0'; |
| | 647 | } |
| | 648 | |
| | 649 | $number = $this->query_vars['number']; |
| | 650 | $offset = $this->query_vars['offset']; |
| | 651 | |
| | 652 | // Don't limit the query results when we have to descend the family tree. |
| | 653 | if ( $number && ! $hierarchical && ! $child_of && '' === $parent ) { |
| | 654 | if ( $offset ) { |
| | 655 | $limits = 'LIMIT ' . $offset . ',' . $number; |
| | 656 | } else { |
| | 657 | $limits = 'LIMIT ' . $number; |
| | 658 | } |
| | 659 | } else { |
| | 660 | $limits = ''; |
| | 661 | } |
| | 662 | |
| | 663 | if ( ! empty( $this->query_vars['search'] ) ) { |
| | 664 | $this->sql_clauses['where']['search'] = $this->get_search_sql( $this->query_vars['search'], array( 't.name', 't.slug' ) ); |
| | 665 | } |
| | 666 | |
| | 667 | // Meta query support. |
| | 668 | $join = ''; |
| | 669 | $distinct = ''; |
| | 670 | |
| | 671 | if ( $this->meta_query_clauses ) { |
| | 672 | $join .= $mq_sql['join']; |
| | 673 | $this->sql_clauses['where']['meta_query'] = preg_replace( '/^\s*AND\s*/', '', $mq_sql['where'] ); |
| | 674 | $distinct .= "DISTINCT"; |
| | 675 | } |
| | 676 | |
| | 677 | // `$fields` is an array for backwards compatibility. |
| | 678 | $fields = array( 't.term_id' ); |
| | 679 | if ( $this->query_vars['count'] || 'count' === $this->query_vars['fields'] ) { |
| | 680 | $fields = array( 'COUNT(*)' ); |
| | 681 | } |
| | 682 | |
| | 683 | /** |
| | 684 | * Filter the fields to select in the terms query. |
| | 685 | * |
| | 686 | * Field lists modified using this filter will only modify the term fields returned |
| | 687 | * by the function when the `$fields` parameter set to 'count' or 'all'. In all other |
| | 688 | * cases, the term fields in the results array will be determined by the `$fields` |
| | 689 | * parameter alone. |
| | 690 | * |
| | 691 | * Use of this filter can result in unpredictable behavior, and is not recommended. |
| | 692 | * |
| | 693 | * @since 2.8.0 |
| | 694 | * |
| | 695 | * @param array $fields An array of fields to select for the terms query. |
| | 696 | * @param array $args An array of term query arguments. |
| | 697 | * @param array $taxonomies An array of taxonomies. |
| | 698 | */ |
| | 699 | $fields = implode( ', ', apply_filters( 'get_terms_fields', $fields, $this->query_vars, $this->query_vars['taxonomy'] ) ); |
| | 700 | |
| | 701 | $join .= " INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id"; |
| | 702 | |
| | 703 | $where = implode( ' AND ', $this->sql_clauses['where'] ); |
| | 704 | |
| | 705 | $pieces = array( 'fields', 'join', 'where', 'distinct', 'orderby', 'order', 'limits' ); |
| | 706 | |
| | 707 | /** |
| | 708 | * Filter the terms query SQL clauses. |
| | 709 | * |
| | 710 | * @since 3.1.0 |
| | 711 | * |
| | 712 | * @param array $pieces Terms query SQL clauses. |
| | 713 | * @param array $taxonomies An array of taxonomies. |
| | 714 | * @param array $args An array of terms query arguments. |
| | 715 | */ |
| | 716 | $clauses = apply_filters( 'terms_clauses', compact( $pieces ), $this->query_vars['taxonomy'], $this->query_vars ); |
| | 717 | |
| | 718 | $fields = isset( $clauses[ 'fields' ] ) ? $clauses[ 'fields' ] : ''; |
| | 719 | $join = isset( $clauses[ 'join' ] ) ? $clauses[ 'join' ] : ''; |
| | 720 | $where = isset( $clauses[ 'where' ] ) ? $clauses[ 'where' ] : ''; |
| | 721 | $distinct = isset( $clauses[ 'distinct' ] ) ? $clauses[ 'distinct' ] : ''; |
| | 722 | $orderby = isset( $clauses[ 'orderby' ] ) ? $clauses[ 'orderby' ] : ''; |
| | 723 | $order = isset( $clauses[ 'order' ] ) ? $clauses[ 'order' ] : ''; |
| | 724 | $limits = isset( $clauses[ 'limits' ] ) ? $clauses[ 'limits' ] : ''; |
| | 725 | |
| | 726 | if ( $where ) { |
| | 727 | $where = "WHERE $where"; |
| | 728 | } |
| | 729 | |
| | 730 | $found_rows = ''; |
| | 731 | if ( ! $this->query_vars['no_found_rows'] ) { |
| | 732 | $found_rows = 'SQL_CALC_FOUND_ROWS'; |
| | 733 | } |
| | 734 | |
| | 735 | $this->sql_clauses['select'] = "SELECT $found_rows $distinct $fields"; |
| | 736 | $this->sql_clauses['from'] = "FROM $wpdb->terms AS t $join"; |
| | 737 | $this->sql_clauses['orderby'] = $orderby ? $orderby . ' ' . $order : ''; |
| | 738 | $this->sql_clauses['limits'] = $limits; |
| | 739 | |
| | 740 | $this->request = "{$this->sql_clauses['select']} {$this->sql_clauses['from']} {$where} {$this->sql_clauses['orderby']} {$this->sql_clauses['limits']}"; |
| | 741 | |
| | 742 | if ( $this->query_vars['count'] || 'count' == $this->query_vars['fields'] ) { |
| | 743 | return intval( $wpdb->get_var( $this->request ) ); |
| | 744 | } |
| | 745 | |
| | 746 | $term_ids = $wpdb->get_col( $this->request ); |
| | 747 | return array_map( 'intval', $term_ids ); |
| | 748 | } |
| | 749 | |
| | 750 | /** |
| | 751 | * Used internally to generate an SQL string for searching across multiple columns |
| | 752 | * |
| | 753 | * @since 4.6.0 |
| | 754 | * @access protected |
| | 755 | * |
| | 756 | * @global wpdb $wpdb WordPress database abstraction object. |
| | 757 | * |
| | 758 | * @param string $string |
| | 759 | * @param array $cols |
| | 760 | * @return string |
| | 761 | */ |
| | 762 | protected function get_search_sql( $string, $cols ) { |
| | 763 | global $wpdb; |
| | 764 | |
| | 765 | $like = '%' . $wpdb->esc_like( $string ) . '%'; |
| | 766 | |
| | 767 | $searches = array(); |
| | 768 | foreach ( $cols as $col ) { |
| | 769 | $searches[] = $wpdb->prepare( "$col LIKE %s", $like ); |
| | 770 | } |
| | 771 | |
| | 772 | return '((' . implode( ') OR (', $searches ) . '))'; |
| | 773 | } |
| | 774 | |
| | 775 | /** |
| | 776 | * Parse and sanitize an 'orderby' key passed to the term query. |
| | 777 | * |
| | 778 | * @since 4.6.0 |
| | 779 | * @access protected |
| | 780 | * |
| | 781 | * @global wpdb $wpdb WordPress database abstraction object. |
| | 782 | * |
| | 783 | * @param string $orderby Alias for the field to order by. |
| | 784 | * @return string Value to used in the ORDER clause. |
| | 785 | */ |
| | 786 | protected function parse_orderby( $orderby_input ) { |
| | 787 | $_orderby = strtolower( $orderby_input ); |
| | 788 | if ( 'count' == $_orderby ) { |
| | 789 | $orderby = 'tt.count'; |
| | 790 | } elseif ( 'name' == $_orderby ) { |
| | 791 | $orderby = 't.name'; |
| | 792 | } elseif ( 'slug' == $_orderby ) { |
| | 793 | $orderby = 't.slug'; |
| | 794 | } elseif ( 'include' == $_orderby && ! empty( $this->query_vars['include'] ) ) { |
| | 795 | $include = implode( ',', array_map( 'absint', $this->query_vars['include'] ) ); |
| | 796 | $orderby = "FIELD( t.term_id, $include )"; |
| | 797 | } elseif ( 'term_group' == $_orderby ) { |
| | 798 | $orderby = 't.term_group'; |
| | 799 | } elseif ( 'description' == $_orderby ) { |
| | 800 | $orderby = 'tt.description'; |
| | 801 | } elseif ( 'none' == $_orderby ) { |
| | 802 | $orderby = ''; |
| | 803 | } elseif ( empty( $_orderby ) || 'id' == $_orderby || 'term_id' === $_orderby ) { |
| | 804 | $orderby = 't.term_id'; |
| | 805 | } else { |
| | 806 | $orderby = 't.name'; |
| | 807 | } |
| | 808 | |
| | 809 | /** |
| | 810 | * Filter the ORDERBY clause of the terms query. |
| | 811 | * |
| | 812 | * @since 2.8.0 |
| | 813 | * |
| | 814 | * @param string $orderby `ORDERBY` clause of the terms query. |
| | 815 | * @param array $args An array of terms query arguments. |
| | 816 | * @param array $taxonomies An array of taxonomies. |
| | 817 | */ |
| | 818 | $orderby = apply_filters( 'get_terms_orderby', $orderby, $this->query_vars, $this->query_vars['taxonomy'] ); |
| | 819 | |
| | 820 | $meta_clauses = $this->meta_query->get_clauses(); |
| | 821 | |
| | 822 | if ( ! empty( $meta_clauses ) ) { |
| | 823 | $allowed_keys = array(); |
| | 824 | $primary_meta_key = null; |
| | 825 | $primary_meta_query = reset( $meta_clauses ); |
| | 826 | if ( ! empty( $primary_meta_query['key'] ) ) { |
| | 827 | $primary_meta_key = $primary_meta_query['key']; |
| | 828 | $allowed_keys[] = $primary_meta_key; |
| | 829 | } |
| | 830 | $allowed_keys[] = 'meta_value'; |
| | 831 | $allowed_keys[] = 'meta_value_num'; |
| | 832 | $allowed_keys = array_merge( $allowed_keys, array_keys( $meta_clauses ) ); |
| | 833 | |
| | 834 | if ( ! empty( $orderby_input ) && in_array( $orderby_input, $allowed_keys ) ) { |
| | 835 | switch( $orderby_input ) { |
| | 836 | case $primary_meta_key: |
| | 837 | case 'meta_value': |
| | 838 | if ( ! empty( $primary_meta_query['type'] ) ) { |
| | 839 | $orderby = "CAST({$primary_meta_query['alias']}.meta_value AS {$primary_meta_query['cast']})"; |
| | 840 | } else { |
| | 841 | $orderby = "{$primary_meta_query['alias']}.meta_value"; |
| | 842 | } |
| | 843 | break; |
| | 844 | |
| | 845 | case 'meta_value_num': |
| | 846 | $orderby = "{$primary_meta_query['alias']}.meta_value+0"; |
| | 847 | break; |
| | 848 | |
| | 849 | default: |
| | 850 | if ( array_key_exists( $orderby_input, $meta_clauses ) ) { |
| | 851 | // $orderby corresponds to a meta_query clause. |
| | 852 | $meta_clause = $meta_clauses[ $orderby_input ]; |
| | 853 | $orderby = "CAST({$meta_clause['alias']}.meta_value AS {$meta_clause['cast']})"; |
| | 854 | } |
| | 855 | break; |
| | 856 | } |
| | 857 | } |
| | 858 | } |
| | 859 | |
| | 860 | return $orderby; |
| | 861 | } |
| | 862 | |
| | 863 | /** |
| | 864 | * Parse an 'order' query variable and cast it to ASC or DESC as necessary. |
| | 865 | * |
| | 866 | * @since 4.6.0 |
| | 867 | * @access protected |
| | 868 | * |
| | 869 | * @param string $order The 'order' query variable. |
| | 870 | * @return string The sanitized 'order' query variable. |
| | 871 | */ |
| | 872 | protected function parse_order( $order ) { |
| | 873 | if ( ! is_string( $order ) || empty( $order ) ) { |
| | 874 | return 'ASC'; |
| | 875 | } |
| | 876 | |
| | 877 | if ( 'ASC' === strtoupper( $order ) ) { |
| | 878 | return 'ASC'; |
| | 879 | } else { |
| | 880 | return 'DESC'; |
| | 881 | } |
| | 882 | } |
| | 883 | } |