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class-core.php
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<?php
/**
* Base class for Sublanguage_site in front-end and Sublanguage_admin in admin.
*/
class Sublanguage_core {
/**
* @from 1.1
*
* @var string
*/
var $version = '2.5';
/**
* @from 2.0
*
* @var string
*/
var $db_version = '2.0';
/**
* @from 1.0
*
* @var array
*/
var $current_language;
/**
* @from 1.1
*
* @var string
*/
var $language_query_var = 'language';
/**
* @from 1.0
*
* @var string
*/
var $option_name = 'sublanguage';
/**
* @from 1.0
*
* @var string
*/
var $language_post_type = 'language';
/**
* @from 1.1
*
* @deprecated from 2.0. Use get_post_type_metakeys() instead.
* @var array
*/
private $postmeta_keys;
/**
* @from 1.5
*
* @var array
*/
private $taxonomies;
/**
* @from 1.5
*
* @deprecated from 2.0. Use is_post_type_translatable() instead.
* @var array
*/
private $post_types;
/**
* @from 1.4
*
* @var array
*/
var $fields = array('post_content', 'post_name', 'post_excerpt', 'post_title');
/**
* @from 2.0
*
* @var array
*/
var $taxonomy_fields = array('name', 'slug', 'description');
/**
* @var string
*
* Prefix for creating language unique id.
*
* @deprecated from 2.0. Use get_prefix() instead. STILL NEEDED FOR COMPAT.
* @from 1.5.1
*/
var $translation_prefix = 'translation_';
/**
* @var bool
*
* Control wether get_post_meta() is being translated
*
* @from 2.4
*/
var $translate_meta = true;
/**
* Get option
*
* @param string $option_name. Option name
* @param mixed $default. Default value if option does not exist
* @return mixed
*
* @from 1.4.7
*/
public function get_option($option_name, $default = false) {
$options = get_option($this->option_name);
if (isset($options[$option_name])) {
return $options[$option_name];
}
return $default;
}
/**
* Get current language
*
* @from 2.0
*
* @return object WP_post|false
*/
public function get_language() {
if (!isset($this->current_language)) {
$this->current_language = $this->request_language();
}
return $this->current_language;
}
/**
* Check wether current language is defined
*
* @from 2.0
*
* @return bool
*/
public function has_language() {
return isset($this->current_language) && $this->current_language;
}
/**
* Set current language
*
* @from 2.0
*
* @param object WP_post $language Language. Optional
*/
public function set_language($language = null) {
static $original;
if (!isset($original)) {
$original = $this->get_language();
}
if (empty($language)) {
$language = $original;
}
$this->current_language = $language;
}
/**
* Restore original language after changing with set_language()
*
* @from 2.0
*/
public function restore_language() {
$this->set_language();
}
/**
* Requestion current language
*
* @from 2.0
*
* @return object WP_post|false
*/
public function request_language() {
if (isset($_REQUEST[$this->language_query_var])) {
return $this->get_language_by($_REQUEST[$this->language_query_var], 'post_name');
}
return $this->get_main_language();
}
/**
* Get array of languages
*
* @return array of WP_post objects
*
* @from 1.2
* @from 2.5 only select language with post_status 'publish' or 'draft'
*/
public function get_languages() {
global $wpdb;
static $languages;
if (!isset($languages)) {
$languages = $wpdb->get_results( $wpdb->prepare(
"SELECT post.ID, post.post_name, post.post_title, post.post_content, post.post_excerpt, post.menu_order, post.post_status FROM $wpdb->posts AS post
WHERE post.post_type = %s AND (post_status = %s OR post_status = %s)
ORDER BY post.menu_order ASC",
$this->language_post_type,
'publish',
'draft'
));
}
return $languages;
}
/**
* Select language object by translation post-type
*
* @deprecated from 1.5.1
* @from 1.1
*
* @param string $post_type.
* @return WP_Post object.
*/
public function get_language_by_type($post_type) {
return $this->get_language_by($post_type, 'post_excerpt');
}
/**
* Select language object by translation taxonomy
*
* @deprecated from 1.5.1
* @from 1.1
*
* @param string $post_type.
* @return WP_Post object.
*/
public function get_language_by_taxonomy($taxonomy) {
return $this->get_language_by($taxonomy, 'post_excerpt');
}
/**
* Get language by field.
* ID corresponds to language ID.
* post_name corresponds to language slug.
* post_content corresponds to language locale.
*
* @from 1.1
*
* @param string $val.
* @param string $key.
* @return false|WP_post object
*/
public function get_language_by($val, $key = 'post_name') {
$languages = $this->get_languages();
foreach ($languages as $lng) {
if ($lng->$key == $val) return $lng;
}
return false;
}
/**
* get an array of all languages values for one field
*
* @from 1.1
*
* @param string $column.
* @return array
*/
public function get_language_column($column) {
$output = array();
$languages = $this->get_languages();
foreach ($languages as $lng) {
$output[] = isset($lng->$column) ? $lng->$column : false;
}
return $output;
}
/**
* Get default language
*
* @from 1.2
*
* @return WP_Post object
*/
public function get_default_language() {
return $this->get_language_by($this->get_option('default'), 'ID');
}
/**
* Get main language
*
* @from 1.2
*
* @return WP_Post object
*/
public function get_main_language() {
return $this->get_language_by($this->get_option('main'), 'ID');
}
/**
* Get language tag
*
* @return string
*
* @from 2.5
*/
public function get_language_tag($language = null) {
if (empty($language)) {
$language = $this->get_language();
}
if ($language->post_excerpt) {
return $language->post_excerpt;
} else {
return $language->post_name;
}
}
/**
* Create prefix for translation meta keys
*
* @from 2.0
*
* @param string $language_slug
* @return string
*/
public function create_prefix($slug) {
return '_' . $slug . '_';
}
/**
* Get prefix for translation meta keys
*
* @from 2.0
*
* @param object WP_Post $language. Optional
* @return string
*/
public function get_prefix($language = null) {
if (empty($language)) {
$language = $this->get_language();
}
if (empty($language)) {
return false;
}
return $this->create_prefix($language->post_name);
}
/**
* Get post_type options for translation.
*
* @from 2.0
* @from 2.3. Remove filter 'sublanguage_post_type_default'. Use "sublanguage_default_$post_type_$option_name" instead
*
* @return mixed
*/
public function get_post_types_options() {
static $post_types_options;
if (!isset($post_types_options)) {
$post_types_options = $this->get_option('post_type', array());
}
return $post_types_options;
}
/**
* Get post_type options for translation.
*
* @from 2.3
*
* @return mixed
*/
public function get_post_type_options($post_type, $default = array()) {
$post_types_options = $this->get_post_types_options();
if (isset($post_types_options[$post_type])) {
$value = $post_types_options[$post_type];
} else {
/**
* Filter default post type option
*
* @from 2.3
*
* @param mixed. Default option
*/
$value = apply_filters("sublanguage_default-$post_type", $default);
}
return $value;
}
/**
* Get post_type single option for translation.
*
* @from 2.0
* @from 2.3. Use "sublanguage_default_$post_type_$option_name" filter
*
* @param string $post_type
* @param string $option_name. Accepts 'translatable', 'meta_keys', 'fields', 'title_cached', 'exclude_untranslated'
* @param mixed $fallback. Value returned when option is not defined.
*
* @return mixed
*/
public function get_post_type_option($post_type, $option_name, $fallback = false) {
$post_type_options = $this->get_post_type_options($post_type);
if (isset($post_type_options[$option_name])) {
return $post_type_options[$option_name];
}
return $fallback;
}
/**
* Check if post_type is translatable.
*
* @from 2.0 $post_type should no longer be 'any' or array.
* @from 1.4.5
*
* @param string $post_type
*
* @return boolean
*/
public function is_post_type_translatable($post_type) {
return $this->get_post_type_option($post_type, 'translatable');
}
/**
* Get post_type translatable meta keys.
*
* @from 2.0
*
* @param string $post_type
*
* @return array of strings
*/
public function get_post_type_metakeys($post_type) {
return $this->get_post_type_option($post_type, 'meta_keys', array());
}
/**
* Get post_type translatable fields.
*
* @from 2.0
*
* @param string $post_type
*
* @return array of strings
*/
public function get_post_type_fields($post_type) {
return $this->get_post_type_option($post_type, 'fields', $this->fields);
}
/**
* Check if post_type title is cached (for ordering)
*
* @from 2.0
*
* @param string $post_type
*
* @return boolean
*/
public function is_post_type_title_cached($post_type) {
return $this->get_post_type_option($post_type, 'title_cached');
}
/**
* Get taxonomies options for translation.
*
* @from 2.0
* @from 2.3 remove filter "sublanguage_taxonomy_default" and default settings
*
* @return mixed
*/
public function get_taxonomies_options() {
static $taxonomy_options;
if (!isset($taxonomy_options)) {
$taxonomy_options = $this->get_option('taxonomy', array());
}
return $taxonomy_options;
}
/**
* Get taxonomies options for translation.
*
* @from 2.3
*
* @return mixed
*/
public function get_taxonomy_options($taxonomy, $default = array()) {
$taxonomies_options = $this->get_taxonomies_options();
if (isset($taxonomies_options[$taxonomy])) {
$value = $taxonomies_options[$taxonomy];
} else {
/**
* Filter default taxonomy options
*
* @from 2.3
*
* @param mixed. Default option
*/
$value = apply_filters("sublanguage_taxonomy_default-$taxonomy", $default);
}
return $value;
}
/**
* Get taxonomy single option for translation.
*
* @from 2.0
* @from 2.3. use filter "sublanguage_taxonomy_default-$taxonomy-$option_name"
*
* @param string $taxonomy
* @param string $option_name. Accepts 'translatable', 'meta_keys', 'fields'
* @param mixed $fallback. Value returned when option is not defined.
*
* @return mixed
*/
public function get_taxonomy_option($taxonomy, $option_name, $fallback = false) {
$taxonomy_options = $this->get_taxonomy_options($taxonomy);
if (isset($taxonomy_options[$option_name])) {
return $taxonomy_options[$option_name];
}
return $fallback;
}
/**
* Check if taxonomy is translatable.
*
* @from 2.0 $taxonomy should no longer be an array.
* @from 1.4.5
*
* @param string $taxonomy
*
* @return boolean
*/
public function is_taxonomy_translatable($taxonomy) {
return $this->get_taxonomy_option($taxonomy, 'translatable');
}
/**
* Get taxonomy translatable meta keys.
*
* @from 2.0
*
* @param string $taxonomy
*
* @return array of strings
*/
public function get_taxonomy_metakeys($taxonomy) {
return $this->get_taxonomy_option($taxonomy, 'meta_keys', array());
}
/**
* Get taxonomy translatable fields.
*
* @from 2.0
*
* @param string $taxonomy
*
* @return array of strings
*/
public function get_taxonomy_fields($taxonomy) {
return $this->get_taxonomy_option($taxonomy, 'fields', $this->taxonomy_fields);
}
/**
* Check whether language is main
*
* @from 2.0 Changed parameters
* @from 1.4.7
*
* @param object WP_Post $language Language. Optional
* @return boolean
*/
public function is_main($language = null) {
if (empty($language)) {
$language = $this->get_language();
}
return $language && $language->ID == $this->get_option('main');
}
/**
* Check whether language is sub-language
*
* @from 2.0 Changed parameters
* @from 1.4.7
*
* @param object WP_Post $language Language. Optional
* @return boolean
*/
public function is_sub($language = null) {
if (empty($language)) {
$language = $this->get_language();
}
return $language && $language->ID != $this->get_option('main');
}
/**
* Check whether language is default
*
* @from 2.0 Changed parameters
* @from 1.4.7
*
* @param object WP_Post $language Language. Optional
* @return boolean
*/
public function is_default($language = null) {
if (empty($language)) {
$language = $this->get_language();
}
return $language && $language->ID == $this->get_option('default');
}
/**
* Check whether language is current language.
*
* @from 1.4.7
*
* @param object WP_Post $language Language.
* @return boolean
*/
public function is_current($language) {
return $language && $this->has_language() && $language->ID === $this->get_language()->ID;
}
/**
* Find a language by ID, slug, object or anything
*
* @from 2.0
*
* @param mixed $language Language object, id or anything. Optional.
* @param string $by Field to search language by. Accepts 'post_name', 'post_title', 'post_content'. Optional.
* @return WP_Post object|false
*/
public function find_language($language = null, $by = null) {
if (empty($language)) {
return $this->get_language();
} else if (isset($by)) {
$language_obj = $this->get_language_by($language, $by);
} else if (is_int($language)) {
$language_obj = $this->get_language_by($language, 'ID');
} else if ($language instanceof WP_Post) {
return $language;
}
if (empty($language_obj)) {
$language_obj = $this->get_language_by($language, 'post_name');
if (empty($language_obj)) {
$language_obj = $this->get_language_by($language, 'post_content');
if (empty($language_obj)) {
$language_obj = $this->get_language_by($language, 'post_title');
}
}
}
if (isset($language_obj)) {
return $language_obj;
}
return false;
}
/**
* Check whether meta key is translatable
*
* @from 2.0
*
* @param string $meta_key Meta key
* @return boolean
*/
public function is_meta_key_translatable($post_type, $meta_key) {
return $this->is_post_type_translatable($post_type) && in_array($meta_key, $this->get_post_type_metakeys($post_type));
}
/**
* Filter translatable taxonomies from array
*
* @from 1.4.6
*
* @param mixed string|array $taxonomies
* @return array
*/
public function filter_translatable_taxonomies($taxonomies) {
if (!is_array($taxonomies)) {
$taxonomies = array($taxonomies);
}
return array_intersect($this->get_taxonomies(), $taxonomies);
}
/**
* Filter translatable post-types from post-types array
*
* @from 1.4.6
*
* @param mixed string|array $post_types
* @return array
*/
public function filter_translatable_post_types($post_types) {
trigger_error('dont use filter_translatable_post_types anymore!');
}
/**
* get taxonomy translation
*
* @from 1.1
*
* @param string $original_taxonomy. Original taxonomy name (e.g 'category')
* @param int $language_id. Language id
* @return string|false Translated taxonomy if exists.
*/
public function get_taxonomy_translation($original_taxonomy, $language = null) {
if (empty($language)) {
$language = $this->get_language();
}
$translations = $this->get_option('translations', array());
if ($language && isset($translations['taxonomy'][$original_taxonomy][$language->ID]) && $translations['taxonomy'][$original_taxonomy][$language->ID]) {
return $translations['taxonomy'][$original_taxonomy][$language->ID];
}
return false;
}
/**
* Translate taxonomy
*
* @from 1.1
*
* @param string $original_taxonomy. Original taxonomy name (e.g 'category')
* @param int $language_id. Language id
* @param string $fallback
* @return string Translated taxonomy
*/
public function translate_taxonomy($original_taxonomy, $language = null, $fallback = null) {
$translated_taxonomy = $this->get_taxonomy_translation($original_taxonomy, $language);
if ($translated_taxonomy) {
return $translated_taxonomy;
} else if (isset($fallback)) {
return $fallback;
}
return $original_taxonomy;
}
/**
* get original taxonomy
*
* @from 1.1
*
* @param string $translated_taxonomy. Translated taxonomy name (e.g 'categorie')
* @param int $language_id. Language id
* @return string Original taxonomy or false.
*/
public function get_taxonomy_original($translated_taxonomy, $language = null) {
if (empty($language)) {
$language = $this->get_language();
}
$translations = $this->get_option('translations', array());
if (isset($translations['taxonomy'])) {
foreach ($translations['taxonomy'] as $original => $translation) {
if (isset($translation[$language->ID]) && $translation[$language->ID] === $translated_taxonomy) {
return $original;
}
}
}
return false;
}
/**
* Translate custom post type
*
* @from 1.1
*
* @param string $original_cpt. Original custom post type name (e.g 'book')
* @param int $language_id. Language id
* @return string Translated cpt (may be equal to original).
*/
public function get_cpt_translation($original_cpt, $language = null) {
if (empty($language)) {
$language = $this->get_language();
}
$translations = $this->get_option('translations', array());
if ($language && isset($translations['post_type'][$original_cpt][$language->ID]) && $translations['post_type'][$original_cpt][$language->ID]) {
return $translations['post_type'][$original_cpt][$language->ID];
}
return false;
}
/**
* Translate custom post type
*
* @from 1.1
*
* @param string $original_cpt. Original custom post type name (e.g 'book')
* @param int $language_id. Language id
* @param string $fallback Fallback. Optional
* @return string Translated cpt (may be equal to original).
*/
public function translate_cpt($original_cpt, $language = null, $fallback = null) {
$translated_cpt = $this->get_cpt_translation($original_cpt, $language);
if ($translated_cpt) {
return $translated_cpt;
} else if (isset($fallback)) {
return $fallback;