| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* Setups the objects languages and translations model |
| 5 |
* |
| 6 |
* @since 1.8 |
| 7 |
*/ |
| 8 |
abstract class PLL_Translated_Object { |
| 9 |
public $model; |
| 10 |
protected $object_type, $type, $tax_language, $tax_translations, $tax_tt; |
| 11 |
|
| 12 |
/** |
| 13 |
* Constructor |
| 14 |
* |
| 15 |
* @since 1.8 |
| 16 |
* |
| 17 |
* @param object $model |
| 18 |
*/ |
| 19 |
public function __construct( &$model ) { |
| 20 |
$this->model = &$model; |
| 21 |
|
| 22 |
// register our taxonomies as soon as possible |
| 23 |
// this is early registration, not ready for rewrite rules as wp_rewrite will be setup later |
| 24 |
$args = array( 'label' => false, 'public' => false, 'query_var' => false, 'rewrite' => false, '_pll' => true ); |
| 25 |
register_taxonomy( $this->tax_language, $this->object_type, $args ); |
| 26 |
$args['update_count_callback'] = '_update_generic_term_count'; // count *all* posts to avoid deleting in clean_translations_terms |
| 27 |
register_taxonomy( $this->tax_translations, $this->object_type, $args ); |
| 28 |
} |
| 29 |
|
| 30 |
/** |
| 31 |
* Wrap wp_get_object_terms to cache it and return only one object |
| 32 |
* inspired by the function get_the_terms |
| 33 |
* |
| 34 |
* @since 1.2 |
| 35 |
* |
| 36 |
* @param int $object_id post_id or term_id |
| 37 |
* @param string $taxonomy Polylang taxonomy depending if we are looking for a post ( or term ) language ( or translation ) |
| 38 |
* @return bool|object the term associated to the object in the requested taxonomy if exists, false otherwise |
| 39 |
*/ |
| 40 |
public function get_object_term( $object_id, $taxonomy ) { |
| 41 |
if ( empty( $object_id ) || is_wp_error( $object_id ) ) { |
| 42 |
return false; |
| 43 |
} |
| 44 |
|
| 45 |
$object_id = (int) $object_id; |
| 46 |
$term = get_object_term_cache( $object_id, $taxonomy ); |
| 47 |
|
| 48 |
if ( false === $term ) { |
| 49 |
// query language and translations at the same time |
| 50 |
$taxonomies = array( $this->tax_language, $this->tax_translations ); |
| 51 |
|
| 52 |
// query terms |
| 53 |
$terms = array(); |
| 54 |
foreach ( wp_get_object_terms( $object_id, $taxonomies, array( 'update_term_meta_cache' => false ) ) as $t ) { |
| 55 |
$terms[ $t->taxonomy ] = $t; |
| 56 |
if ( $t->taxonomy == $taxonomy ) { |
| 57 |
$term = $t; |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
// store it the way WP wants it |
| 62 |
// set an empty cache if no term found in the taxonomy |
| 63 |
foreach ( $taxonomies as $tax ) { |
| 64 |
wp_cache_add( $object_id, empty( $terms[ $tax ] ) ? array() : array( $terms[ $tax ] ), $tax . '_relationships' ); |
| 65 |
} |
| 66 |
} |
| 67 |
else { |
| 68 |
$term = reset( $term ); |
| 69 |
} |
| 70 |
|
| 71 |
return empty( $term ) ? false : $term; |
| 72 |
} |
| 73 |
|
| 74 |
/** |
| 75 |
* Tells whether a translation term must be updated |
| 76 |
* |
| 77 |
* @since 2.3 |
| 78 |
* |
| 79 |
* @param array $id Post id or term id |
| 80 |
* @param array $translations An associative array of translations with language code as key and translation id as value |
| 81 |
*/ |
| 82 |
protected function should_update_translation_group( $id, $translations ) { |
| 83 |
// Don't do anything if no translations have been added to the group |
| 84 |
$old_translations = $this->get_translations( $id ); // Includes at least $id itself |
| 85 |
return count( array_diff_assoc( $translations, $old_translations ) ) > 0; |
| 86 |
} |
| 87 |
|
| 88 |
/** |
| 89 |
* Saves translations for posts or terms |
| 90 |
* |
| 91 |
* @since 0.5 |
| 92 |
* |
| 93 |
* @param int $id Post id or term id |
| 94 |
* @param array $translations An associative array of translations with language code as key and translation id as value |
| 95 |
*/ |
| 96 |
public function save_translations( $id, $translations ) { |
| 97 |
$id = (int) $id; |
| 98 |
|
| 99 |
if ( ( $lang = $this->get_language( $id ) ) && isset( $translations ) && is_array( $translations ) ) { |
| 100 |
// sanitize the translations array |
| 101 |
$translations = array_map( 'intval', $translations ); |
| 102 |
$translations = array_merge( array( $lang->slug => $id ), $translations ); // make sure this object is in translations |
| 103 |
$translations = array_diff( $translations, array( 0 ) ); // don't keep non translated languages |
| 104 |
$translations = array_intersect_key( $translations, array_flip( $this->model->get_languages_list( array( 'fields' => 'slug' ) ) ) ); // keep only valid languages slugs as keys |
| 105 |
|
| 106 |
// unlink removed translations |
| 107 |
$old_translations = $this->get_translations( $id ); |
| 108 |
foreach ( array_diff_assoc( $old_translations, $translations ) as $object_id ) { |
| 109 |
$this->delete_translation( $object_id ); |
| 110 |
} |
| 111 |
|
| 112 |
// Check id we need to create or update the translation group |
| 113 |
if ( $this->should_update_translation_group( $id, $translations ) ) { |
| 114 |
$terms = wp_get_object_terms( $translations, $this->tax_translations ); |
| 115 |
$term = reset( $terms ); |
| 116 |
|
| 117 |
// create a new term if necessary |
| 118 |
if ( empty( $term ) ) { |
| 119 |
wp_insert_term( $group = uniqid( 'pll_' ), $this->tax_translations, array( 'description' => maybe_serialize( $translations ) ) ); |
| 120 |
} |
| 121 |
else { |
| 122 |
// take care not to overwrite extra data stored in description field, if any |
| 123 |
$d = maybe_unserialize( $term->description ); |
| 124 |
$d = is_array( $d ) ? array_diff_key( $d, $old_translations ) : array(); // remove old translations |
| 125 |
$d = array_merge( $d, $translations ); // add new one |
| 126 |
wp_update_term( $group = (int) $term->term_id, $this->tax_translations, array( 'description' => maybe_serialize( $d ) ) ); |
| 127 |
} |
| 128 |
|
| 129 |
// link all translations to the new term |
| 130 |
foreach ( $translations as $p ) { |
| 131 |
wp_set_object_terms( $p, $group, $this->tax_translations ); |
| 132 |
} |
| 133 |
|
| 134 |
// clean now unused translation groups |
| 135 |
foreach ( wp_list_pluck( $terms, 'term_id' ) as $term_id ) { |
| 136 |
$term = get_term( $term_id, $this->tax_translations ); |
| 137 |
if ( empty( $term->count ) ) { |
| 138 |
wp_delete_term( $term_id, $this->tax_translations ); |
| 139 |
} |
| 140 |
} |
| 141 |
} |
| 142 |
} |
| 143 |
} |
| 144 |
|
| 145 |
/** |
| 146 |
* Deletes a translation of a post or term |
| 147 |
* |
| 148 |
* @since 0.5 |
| 149 |
* |
| 150 |
* @param int $id post id or term id |
| 151 |
*/ |
| 152 |
public function delete_translation( $id ) { |
| 153 |
$id = (int) $id; |
| 154 |
$term = $this->get_object_term( $id, $this->tax_translations ); |
| 155 |
|
| 156 |
if ( ! empty( $term ) ) { |
| 157 |
$d = maybe_unserialize( $term->description ); |
| 158 |
$slug = array_search( $id, $this->get_translations( $id ) ); // in case some plugin stores the same value with different key |
| 159 |
unset( $d[ $slug ] ); |
| 160 |
|
| 161 |
if ( empty( $d ) ) { |
| 162 |
wp_delete_term( (int) $term->term_id, $this->tax_translations ); |
| 163 |
} |
| 164 |
else { |
| 165 |
wp_update_term( (int) $term->term_id, $this->tax_translations, array( 'description' => maybe_serialize( $d ) ) ); |
| 166 |
} |
| 167 |
} |
| 168 |
} |
| 169 |
|
| 170 |
/** |
| 171 |
* Returns an array of translations of a post or term |
| 172 |
* |
| 173 |
* @since 0.5 |
| 174 |
* |
| 175 |
* @param int $id post id or term id |
| 176 |
* @return array an associative array of translations with language code as key and translation id as value |
| 177 |
*/ |
| 178 |
public function get_translations( $id ) { |
| 179 |
$term = $this->get_object_term( $id, $this->tax_translations ); |
| 180 |
$translations = empty( $term ) ? array() : maybe_unserialize( $term->description ); |
| 181 |
|
| 182 |
// make sure we return only translations ( thus we allow plugins to store other information in the array ) |
| 183 |
if ( is_array( $translations ) ) { |
| 184 |
$translations = array_intersect_key( $translations, array_flip( $this->model->get_languages_list( array( 'fields' => 'slug' ) ) ) ); |
| 185 |
} |
| 186 |
|
| 187 |
// make sure to return at least the passed post or term in its translation array |
| 188 |
if ( empty( $translations ) && $lang = $this->get_language( $id ) ) { |
| 189 |
$translations = array( $lang->slug => $id ); |
| 190 |
} |
| 191 |
|
| 192 |
return $translations; |
| 193 |
} |
| 194 |
|
| 195 |
/** |
| 196 |
* Returns the id of the translation of a post or term |
| 197 |
* |
| 198 |
* @since 0.5 |
| 199 |
* |
| 200 |
* @param int $id post id or term id |
| 201 |
* @param object|string $lang object or slug |
| 202 |
* @return bool|int post id or term id of the translation, false if there is none |
| 203 |
*/ |
| 204 |
public function get_translation( $id, $lang ) { |
| 205 |
if ( ! $lang = $this->model->get_language( $lang ) ) { |
| 206 |
return false; |
| 207 |
} |
| 208 |
|
| 209 |
$translations = $this->get_translations( $id ); |
| 210 |
|
| 211 |
return isset( $translations[ $lang->slug ] ) ? $translations[ $lang->slug ] : false; |
| 212 |
} |
| 213 |
|
| 214 |
/** |
| 215 |
* Among the object and its translations, returns the id of the object which is in $lang |
| 216 |
* |
| 217 |
* @since 0.1 |
| 218 |
* |
| 219 |
* @param int $id post id or term id |
| 220 |
* @param int|string|object $lang language ( term_id or slug or object ) |
| 221 |
* @return bool|int the translation post id or term id if exists, otherwise the post id or term id, false if the post has no language |
| 222 |
*/ |
| 223 |
public function get( $id, $lang ) { |
| 224 |
$id = (int) $id; |
| 225 |
$obj_lang = $this->get_language( $id ); // FIXME is this necessary? |
| 226 |
if ( ! $lang || ! $obj_lang ) { |
| 227 |
return false; |
| 228 |
} |
| 229 |
|
| 230 |
$lang = $this->model->get_language( $lang ); |
| 231 |
return $obj_lang->term_id == $lang->term_id ? $id : $this->get_translation( $id, $lang ); |
| 232 |
} |
| 233 |
|
| 234 |
/** |
| 235 |
* A where clause to add to sql queries when filtering by language is needed directly in query |
| 236 |
* |
| 237 |
* @since 1.2 |
| 238 |
* |
| 239 |
* @param object|array|string $lang a PLL_Language object or a comma separated list of language slug or an array of language slugs |
| 240 |
* @return string where clause |
| 241 |
*/ |
| 242 |
public function where_clause( $lang ) { |
| 243 |
$tt_id = $this->tax_tt; |
| 244 |
|
| 245 |
// $lang is an object |
| 246 |
// generally the case if the query is coming from Polylang |
| 247 |
if ( is_object( $lang ) ) { |
| 248 |
return ' AND pll_tr.term_taxonomy_id = ' . absint( $lang->$tt_id ); |
| 249 |
} |
| 250 |
|
| 251 |
// $lang is a comma separated list of slugs ( or an array of slugs ) |
| 252 |
// generally the case is the query is coming from outside with 'lang' parameter |
| 253 |
$slugs = is_array( $lang ) ? $lang : explode( ',', $lang ); |
| 254 |
$languages = array(); |
| 255 |
foreach ( $slugs as $slug ) { |
| 256 |
$languages[] = absint( $this->model->get_language( $slug )->$tt_id ); |
| 257 |
} |
| 258 |
|
| 259 |
return ' AND pll_tr.term_taxonomy_id IN ( ' . implode( ',', $languages ) . ' )'; |
| 260 |
} |
| 261 |
|
| 262 |
/** |
| 263 |
* Returns ids of objects in a language similarly to get_objects_in_term for a taxonomy |
| 264 |
* faster than get_objects_in_term as it avoids a JOIN |
| 265 |
* |
| 266 |
* @since 1.4 |
| 267 |
* |
| 268 |
* @param object $lang a PLL_Language object |
| 269 |
* @return array |
| 270 |
*/ |
| 271 |
public function get_objects_in_language( $lang ) { |
| 272 |
global $wpdb; |
| 273 |
$tt_id = $this->tax_tt; |
| 274 |
return $wpdb->get_col( $wpdb->prepare( "SELECT object_id FROM $wpdb->term_relationships WHERE term_taxonomy_id = %d", $lang->$tt_id ) ); |
| 275 |
} |
| 276 |
|
| 277 |
/** |
| 278 |
* Check if a user can synchronize translations |
| 279 |
* |
| 280 |
* @since 2.6 |
| 281 |
* |
| 282 |
* @param int $id Object id |
| 283 |
* @return bool |
| 284 |
*/ |
| 285 |
public function current_user_can_synchronize( $id ) { |
| 286 |
/** |
| 287 |
* Filters whether a synchronization capability check should take place |
| 288 |
* |
| 289 |
* @since 2.6 |
| 290 |
* |
| 291 |
* @param $check null to enable the capability check, |
| 292 |
* true to always allow the synchronization, |
| 293 |
* false to always disallow the synchronization. |
| 294 |
* Defaults to true. |
| 295 |
* @param $id The synchronization source object id |
| 296 |
*/ |
| 297 |
$check = apply_filters( "pll_pre_current_user_can_synchronize_{$this->type}", true, $id ); |
| 298 |
if ( null !== $check ) { |
| 299 |
return $check; |
| 300 |
} |
| 301 |
|
| 302 |
if ( ! current_user_can( "edit_{$this->type}", $id ) ) { |
| 303 |
return false; |
| 304 |
} |
| 305 |
|
| 306 |
foreach ( $this->get_translations( $id ) as $tr_id ) { |
| 307 |
if ( $tr_id !== $id && ! current_user_can( "edit_{$this->type}", $tr_id ) ) { |
| 308 |
return false; |
| 309 |
} |
| 310 |
} |
| 311 |
|
| 312 |
return true; |
| 313 |
} |
| 314 |
} |
| 315 |
|
