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<?php
/**
* The Translatable decorator allows your DataObjects to have versions in different languages,
* defining which fields are can be translated. Translatable can be applied
* to any {@link DataObject} subclass, but is mostly used with {@link SiteTree}.
* Translatable is compatible with the {@link Versioned} extension.
* To avoid cluttering up the database-schema of the 99% of sites without multiple languages,
* the translation-feature is disabled by default.
*
* Locales (e.g. 'en_US') are used in Translatable for identifying a record by language,
* see section "Locales and Language Tags".
*
* <h2>Configuration</h2>
*
* <h3>Through Object::add_extension()</h3>
* Enabling Translatable through {@link Object::add_extension()} in your _config.php:
* <code>
* Object::add_extension('MyClass', 'Translatable');
* </code>
* This is the recommended approach for enabling Translatable.
*
* <h3>Through $extensions</h3>
* <code>
* class MyClass extends DataObject {
* static $extensions = array(
* "Translatable"
* );
* }
* </code>
*
* Make sure to rebuild the database through /dev/build after enabling translatable.
* Use the correct {@link set_default_locale()} before building the database
* for the first time, as this locale will be written on all new records.
*
* <h3>"Default" locales</h3>
*
* Important: If the "default language" of your site is not US-English (en_US),
* please ensure to set the appropriate default language for
* your content before building the database with Translatable enabled:
* <code>
* Translatable::set_default_locale(<locale>); // e.g. 'de_DE' or 'fr_FR'
* </code>
*
* For the Translatable class, a "locale" consists of a language code plus a region
* code separated by an underscore,
* for example "de_AT" for German language ("de") in the region Austria ("AT").
* See http://www.w3.org/International/articles/language-tags/ for a detailed description.
*
* <h2>Usage</h2>
*
* Getting a translation for an existing instance:
* <code>
* $translatedObj = Translatable::get_one_by_locale('MyObject', 'de_DE');
* </code>
*
* Getting a translation for an existing instance:
* <code>
* $obj = DataObject::get_by_id('MyObject', 99); // original language
* $translatedObj = $obj->getTranslation('de_DE');
* </code>
*
* Getting translations through {@link Translatable::set_current_locale()}.
* This is *not* a recommended approach, but sometimes inavoidable (e.g. for {@link Versioned} methods).
* <code>
* $origLocale = Translatable::get_current_locale();
* Translatable::set_current_locale('de_DE');
* $obj = Versioned::get_one_by_stage('MyObject', "ID = 99");
* Translatable::set_current_locale($origLocale);
* </code>
*
* Creating a translation:
* <code>
* $obj = new MyObject();
* $translatedObj = $obj->createTranslation('de_DE');
* </code>
*
* <h2>Usage for SiteTree</h2>
*
* Translatable can be used for subclasses of {@link SiteTree} as well.
*
* <code>
* Object::add_extension('SiteTree', 'Translatable');
* Object::add_extension('SiteConig', 'Translatable');
* </code>
*
* If a child page translation is requested without the parent
* page already having a translation in this language, the extension
* will recursively create translations up the tree.
* Caution: The "URLSegment" property is enforced to be unique across
* languages by auto-appending the language code at the end.
* You'll need to ensure that the appropriate "reading language" is set
* before showing links to other pages on a website through $_GET['locale'].
* Pages in different languages can have different publication states
* through the {@link Versioned} extension.
*
* Note: You can't get Children() for a parent page in a different language
* through set_current_locale(). Get the translated parent first.
*
* <code>
* // wrong
* Translatable::set_current_locale('de_DE');
* $englishParent->Children();
* // right
* $germanParent = $englishParent->getTranslation('de_DE');
* $germanParent->Children();
* </code>
*
* <h2>Translation groups</h2>
*
* Each translation can have one or more related pages in other languages.
* This relation is optional, meaning you can
* create translations which have no representation in the "default language".
* This means you can have a french translation with a german original,
* without either of them having a representation
* in the default english language tree.
* Caution: There is no versioning for translation groups,
* meaning associating an object with a group will affect both stage and live records.
*
* SiteTree database table (abbreviated)
* ^ ID ^ URLSegment ^ Title ^ Locale ^
* | 1 | about-us | About us | en_US |
* | 2 | ueber-uns | Über uns | de_DE |
* | 3 | contact | Contact | en_US |
*
* SiteTree_translationgroups database table
* ^ TranslationGroupID ^ OriginalID ^
* | 99 | 1 |
* | 99 | 2 |
* | 199 | 3 |
*
* <h2>Character Sets</h2>
*
* Caution: Does not apply any character-set conversion, it is assumed that all content
* is stored and represented in UTF-8 (Unicode). Please make sure your database and
* HTML-templates adjust to this.
*
* <h2>Permissions</h2>
*
* Authors without administrative access need special permissions to edit locales other than
* the default locale.
*
* - TRANSLATE_ALL: Translate into all locales
* - Translate_<locale>: Translate a specific locale. Only available for all locales set in
* `Translatable::set_allowed_locales()`.
*
* Note: If user-specific view permissions are required, please overload `SiteTree->canView()`.
*
* <h2>Uninstalling/Disabling</h2>
*
* Disabling Translatable after creating translations will lead to all
* pages being shown in the default sitetree regardless of their language.
* It is advised to start with a new database after uninstalling Translatable,
* or manually filter out translated objects through their "Locale" property
* in the database.
*
* @see http://doc.silverstripe.org/doku.php?id=multilingualcontent
*
* @author Ingo Schommer <ingo (at) silverstripe (dot) com>
* @author Michael Gall <michael (at) wakeless (dot) net>
* @author Bernat Foj Capell <bernat@silverstripe.com>
*
* @package translatable
*/
class Translatable extends DataExtension implements PermissionProvider {
/**
* The 'default' language.
* @var string
*/
protected static $default_locale = 'en_US';
/**
* The language in which we are reading dataobjects.
*
* @var string
*/
protected static $current_locale = null;
/**
* A cached list of existing tables
*
* @var mixed
*/
protected static $tableList = null;
/**
* An array of fields that can be translated.
* @var array
*/
protected $translatableFields = null;
/**
* A map of the field values of the original (untranslated) DataObject record
* @var array
*/
protected $original_values = null;
/**
* If this is set to TRUE then {@link augmentSQL()} will automatically add a filter
* clause to limit queries to the current {@link get_current_locale()}. This camn be
* disabled using {@link disable_locale_filter()}
*
* @var bool
*/
protected static $locale_filter_enabled = true;
/**
* @var array All locales in which a translation can be created.
* This limits the choice in the CMS language dropdown in the
* "Translation" tab, as well as the language dropdown above
* the CMS tree. If not set, it will default to showing all
* common locales.
*/
protected static $allowed_locales = null;
/**
* Reset static configuration variables to their default values
*/
static function reset() {
self::enable_locale_filter();
self::$default_locale = 'en_US';
self::$current_locale = null;
self::$allowed_locales = null;
}
/**
* Choose the language the site is currently on.
*
* If $_GET['locale'] is currently set, then that locale will be used.
* Otherwise the member preference (if logged
* in) or default locale will be used.
*
* @todo Re-implement cookie and member option
*
* @param $langsAvailable array A numerical array of languages which are valid choices (optional)
* @return string Selected language (also saved in $current_locale).
*/
static function choose_site_locale($langsAvailable = array()) {
if(self::$current_locale) {
return self::$current_locale;
}
if(
(isset($_REQUEST['locale']) && !$langsAvailable)
|| (isset($_REQUEST['locale'])
&& in_array($_REQUEST['locale'], $langsAvailable))
) {
// get from request parameter
self::set_current_locale($_REQUEST['locale']);
} else {
self::set_current_locale(self::default_locale());
}
return self::$current_locale;
}
/**
* Get the current reading language.
* This value has to be set before the schema is built with translatable enabled,
* any changes after this can cause unintended side-effects.
*
* @return string
*/
static function default_locale() {
return self::$default_locale;
}
/**
* Set default language. Please set this value *before* creating
* any database records (like pages), as this locale will be attached
* to all new records.
*
* @param $locale String
*/
static function set_default_locale($locale) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
$localeList = i18n::get_locale_list();
if(isset($localeList[$locale])) {
self::$default_locale = $locale;
} else {
user_error(
"Translatable::set_default_locale(): '$locale' is not a valid locale.",
E_USER_WARNING
);
}
}
/**
* Get the current reading language.
* If its not chosen, call {@link choose_site_locale()}.
*
* @return string
*/
static function get_current_locale() {
return (self::$current_locale) ? self::$current_locale : self::choose_site_locale();
}
/**
* Set the reading language, either namespaced to 'site' (website content)
* or 'cms' (management backend). This value is used in {@link augmentSQL()}
* to "auto-filter" all SELECT queries by this language.
* See {@link disable_locale_filter()} on how to override this behaviour temporarily.
*
* @param string $lang New reading language.
*/
static function set_current_locale($locale) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
self::$current_locale = $locale;
}
/**
* Get a singleton instance of a class in the given language.
* @param string $class The name of the class.
* @param string $locale The name of the language.
* @param string $filter A filter to be inserted into the WHERE clause.
* @param boolean $cache Use caching (default: false)
* @param string $orderby A sort expression to be inserted into the ORDER BY clause.
* @return DataObject
*/
static function get_one_by_locale($class, $locale, $filter = '', $cache = false, $orderby = "") {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
$orig = Translatable::get_current_locale();
Translatable::set_current_locale($locale);
$do = $class::get()->where($filter)->sort($orderby)->First();
Translatable::set_current_locale($orig);
return $do;
}
/**
* Get all the instances of the given class translated to the given language
*
* @param string $class The name of the class
* @param string $locale The name of the language
* @param string $filter A filter to be inserted into the WHERE clause.
* @param string $sort A sort expression to be inserted into the ORDER BY clause.
* @param string $join A single join clause. This can be used for filtering, only 1
* instance of each DataObject will be returned.
* @param string $limit A limit expression to be inserted into the LIMIT clause.
* @param string $containerClass The container class to return the results in.
* @param string $having A filter to be inserted into the HAVING clause.
* @return mixed The objects matching the conditions.
*/
static function get_by_locale($class, $locale, $filter = '', $sort = '', $join = "", $limit = "") {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
$oldLang = self::get_current_locale();
self::set_current_locale($locale);
$result = $class::get();
if($filter) $result = $result->where($filter);
if($sort) $result = $result->sort($sort);
if($join) $result = $result->leftJoin($join);
if($limit) $result = $result->limit($limit);
self::set_current_locale($oldLang);
return $result;
}
/**
* @return bool
*/
public static function locale_filter_enabled() {
return self::$locale_filter_enabled;
}
/**
* Enables automatic filtering by locale. This is normally called after is has been
* disabled using {@link disable_locale_filter()}.
*/
public static function enable_locale_filter() {
self::$locale_filter_enabled = true;
}
/**
* Disables automatic locale filtering in {@link augmentSQL()}. This can be re-enabled
* using {@link enable_locale_filter()}.
*/
public static function disable_locale_filter() {
self::$locale_filter_enabled = false;
}
/**
* Gets all translations for this specific page.
* Doesn't include the language of the current record.
*
* @return array Numeric array of all locales, sorted alphabetically.
*/
function getTranslatedLocales() {
$langs = array();
$baseDataClass = ClassInfo::baseDataClass($this->owner->class); //Base Class
$translationGroupClass = $baseDataClass . "_translationgroups";
if($this->owner->hasExtension("Versioned") && Versioned::current_stage() == "Live") {
$baseDataClass = $baseDataClass . "_Live";
}
$translationGroupID = $this->getTranslationGroup();
if(is_numeric($translationGroupID)) {
$query = new SQLQuery(
'DISTINCT "Locale"',
sprintf(
'"%s" LEFT JOIN "%s" ON "%s"."OriginalID" = "%s"."ID"',
$baseDataClass,
$translationGroupClass,
$translationGroupClass,
$baseDataClass
), // from
sprintf(
'"%s"."TranslationGroupID" = %d AND "%s"."Locale" != \'%s\'',
$translationGroupClass,
$translationGroupID,
$baseDataClass,
$this->owner->Locale
) // where
);
$langs = $query->execute()->column();
}
if($langs) {
$langCodes = array_values($langs);
sort($langCodes);
return $langCodes;
} else {
return array();
};
}
/**
* Gets all locales that a member can access
* as defined by {@link $allowed_locales}
* and {@link canTranslate()}.
* If {@link $allowed_locales} is not set and
* the user has the `TRANSLATE_ALL` permission,
* the method will return all available locales in the system.
*
* @param Member $member
* @return array Map of locales
*/
function getAllowedLocalesForMember($member) {
$locales = self::get_allowed_locales();
if(!$locales) $locales = i18n::get_common_locales();
if($locales) foreach($locales as $k => $locale) {
if(!$this->canTranslate($member, $locale)) unset($locales[$k]);
}
return $locales;
}
/**
* Get a list of languages in which a given element has been translated.
*
* @deprecated 2.4 Use {@link getTranslations()}
*
* @param string $class Name of the class of the element
* @param int $id ID of the element
* @return array List of languages
*/
static function get_langs_by_id($class, $id) {
$do = DataObject::get_by_id($class, $id);
return ($do ? $do->getTranslatedLocales() : array());
}
/**
* Enables the multilingual feature
*
* @deprecated 2.4 Use Object::add_extension('SiteTree', 'Translatable')
*/
static function enable() {
if(class_exists('SiteTree')) Object::add_extension('SiteTree', 'Translatable');
}
/**
* Disable the multilingual feature
*
* @deprecated 2.4 Use Object::remove_extension('SiteTree', 'Translatable')
*/
static function disable() {
if(class_exists('SiteTree')) Object::remove_extension('SiteTree', 'Translatable');
}
/**
* Check whether multilingual support has been enabled
*
* @deprecated 2.4 Use Object::has_extension('SiteTree', 'Translatable')
* @return boolean True if enabled
*/
static function is_enabled() {
if(class_exists('SiteTree')){
return Object::has_extension('SiteTree', 'Translatable');
}else{
return false;
}
}
/**
* Construct a new Translatable object.
* @var array $translatableFields The different fields of the object that can be translated.
* This is currently not implemented, all fields are marked translatable (see {@link setOwner()}).
*/
function __construct($translatableFields = null) {
parent::__construct();
// @todo Disabled selection of translatable fields - we're setting all fields as
// translatable in setOwner()
/*
if(!is_array($translatableFields)) {
$translatableFields = func_get_args();
}
$this->translatableFields = $translatableFields;
*/
// workaround for extending a method on another decorator (Hierarchy):
// split the method into two calls, and overwrite the wrapper AllChildrenIncludingDeleted()
// Has to be executed even with Translatable disabled, as it overwrites the method with same name
// on Hierarchy class, and routes through to Hierarchy->doAllChildrenIncludingDeleted() instead.
// Caution: There's an additional method for augmentAllChildrenIncludingDeleted()
}
function setOwner($owner, $ownerBaseClass = null) {
parent::setOwner($owner, $ownerBaseClass);
// setting translatable fields by inspecting owner - this should really be done in the constructor
if($this->owner && $this->translatableFields === null) {
$this->translatableFields = array_merge(
array_keys($this->owner->inheritedDatabaseFields()),
array_keys($this->owner->has_many()),
array_keys($this->owner->many_many())
);
}
}
static function add_to_class($class, $extensionClass, $args = null) {
Config::inst()->update($class, 'defaults', array(
"Locale" => Translatable::default_locale() // as an overloaded getter as well: getLang()
));
Config::inst()->update($class, 'db', array(
"Locale" => "DBLocale",
//"TranslationMasterID" => "Int" // optional relation to a "translation master"
));
parent::add_to_class($class, $extensionClass, $args);
}
/**
* Changes any SELECT query thats not filtering on an ID
* to limit by the current language defined in {@link get_current_locale()}.
* It falls back to "Locale='' OR Lang IS NULL" and assumes that
* this implies querying for the default language.
*
* Use {@link disable_locale_filter()} to temporarily disable this "auto-filtering".
*/
function augmentSQL(SQLQuery &$query) {
// If the record is saved (and not a singleton), and has a locale,
// limit the current call to its locale. This fixes a lot of problems
// with other extensions like Versioned
if($this->owner->ID && !empty($this->owner->Locale)) {
$locale = $this->owner->Locale;
} else {
$locale = Translatable::get_current_locale();
}
$baseTable = ClassInfo::baseDataClass($this->owner->class);
if(
$locale
// unless the filter has been temporarily disabled
&& self::locale_filter_enabled()
// DataObject::get_by_id() should work independently of language
&& !$query->filtersOnID()
// the query contains this table
// @todo Isn't this always the case?!
&& array_search($baseTable, array_keys($query->getFrom())) !== false
// or we're already filtering by Lang (either from an earlier augmentSQL()
// call or through custom SQL filters)
&& !preg_match('/("|\'|`)Locale("|\'|`)/', implode(' ', $query->getWhere()))
//&& !$query->filtersOnFK()
) {
$qry = sprintf('"%s"."Locale" = \'%s\'', $baseTable, Convert::raw2sql($locale));
$query->addWhere($qry);
}
}
/**
* Create <table>_translation database table to enable
* tracking of "translation groups" in which each related
* translation of an object acts as a sibling, rather than
* a parent->child relation.
*/
function augmentDatabase() {
$baseDataClass = ClassInfo::baseDataClass($this->owner->class);
if($this->owner->class != $baseDataClass) return;
$fields = array(
'OriginalID' => 'Int',
'TranslationGroupID' => 'Int',
);
$indexes = array(
'OriginalID' => true,
'TranslationGroupID' => true
);
// Add new tables if required
DB::requireTable("{$baseDataClass}_translationgroups", $fields, $indexes);
// Remove 2.2 style tables
DB::dontRequireTable("{$baseDataClass}_lang");
if($this->owner->hasExtension('Versioned')) {
DB::dontRequireTable("{$baseDataClass}_lang_Live");
DB::dontRequireTable("{$baseDataClass}_lang_versions");
}
}
/**
* @todo Find more appropriate place to hook into database building
*/
function requireDefaultRecords() {
// @todo This relies on the Locale attribute being on the base data class, and not any subclasses
if($this->owner->class != ClassInfo::baseDataClass($this->owner->class)) return false;
// Permissions: If a group doesn't have any specific TRANSLATE_<locale> edit rights,
// but has CMS_ACCESS_CMSMain (general CMS access), then assign TRANSLATE_ALL permissions as a default.
// Auto-setting permissions based on these intransparent criteria is a bit hacky,
// but unavoidable until we can determine when a certain permission code was made available first
// (see http://open.silverstripe.org/ticket/4940)
$groups = Permission::get_groups_by_permission(array(
'CMS_ACCESS_CMSMain',
'CMS_ACCESS_LeftAndMain',
'ADMIN'
));
if($groups) foreach($groups as $group) {
$codes = $group->Permissions()->column('Code');
$hasTranslationCode = false;
foreach($codes as $code) {
if(preg_match('/^TRANSLATE_/', $code)) $hasTranslationCode = true;
}
// Only add the code if no more restrictive code exists
if(!$hasTranslationCode) Permission::grant($group->ID, 'TRANSLATE_ALL');
}
// If the Translatable extension was added after the first records were already
// created in the database, make sure to update the Locale property if
// if wasn't set before
$idsWithoutLocale = DB::query(sprintf(
'SELECT "ID" FROM "%s" WHERE "Locale" IS NULL OR "Locale" = \'\'',
ClassInfo::baseDataClass($this->owner->class)
))->column();
if(!$idsWithoutLocale) return;
if(class_exists('SiteTree') && $this->owner->class == 'SiteTree') {
foreach(array('Stage', 'Live') as $stage) {
foreach($idsWithoutLocale as $id) {
$obj = Versioned::get_one_by_stage(
$this->owner->class,
$stage,
sprintf('"SiteTree"."ID" = %d', $id)
);
if(!$obj) continue;
$obj->Locale = Translatable::default_locale();
$obj->writeToStage($stage);
$obj->addTranslationGroup($obj->ID);
$obj->destroy();
unset($obj);
}
}
} else {
foreach($idsWithoutLocale as $id) {
$obj = DataObject::get_by_id($this->owner->class, $id);
if(!$obj) continue;
$obj->Locale = Translatable::default_locale();
$obj->write();
$obj->addTranslationGroup($obj->ID);
$obj->destroy();
unset($obj);
}
}
DB::alteration_message(sprintf(
"Added default locale '%s' to table %s","changed",
Translatable::default_locale(),
$this->owner->class
));
}
/**
* Add a record to a "translation group",
* so its relationship to other translations
* based off the same object can be determined later on.
* See class header for further comments.
*
* @param int $originalID Either the primary key of the record this new translation is based on,
* or the primary key of this record, to create a new translation group
* @param boolean $overwrite
*/
public function addTranslationGroup($originalID, $overwrite = false) {
if(!$this->owner->exists()) return false;
$baseDataClass = ClassInfo::baseDataClass($this->owner->class);
$existingGroupID = $this->getTranslationGroup($originalID);
// Remove any existing groups if overwrite flag is set
if($existingGroupID && $overwrite) {
$sql = sprintf(
'DELETE FROM "%s_translationgroups" WHERE "TranslationGroupID" = %d AND "OriginalID" = %d',
$baseDataClass,
$existingGroupID,
$this->owner->ID
);
DB::query($sql);
$existingGroupID = null;
}
// Add to group (only if not in existing group or $overwrite flag is set)
if(!$existingGroupID) {
$sql = sprintf(
'INSERT INTO "%s_translationgroups" ("TranslationGroupID","OriginalID") VALUES (%d,%d)',
$baseDataClass,
$originalID,
$this->owner->ID
);
DB::query($sql);
}
}
/**
* Gets the translation group for the current record.
* This ID might equal the record ID, but doesn't have to -
* it just points to one "original" record in the list.
*
* @return int Numeric ID of the translationgroup in the <classname>_translationgroup table
*/
public function getTranslationGroup() {
if(!$this->owner->exists()) return false;
$baseDataClass = ClassInfo::baseDataClass($this->owner->class);
return DB::query(
sprintf(
'SELECT "TranslationGroupID" FROM "%s_translationgroups" WHERE "OriginalID" = %d',
$baseDataClass,
$this->owner->ID
)
)->value();
}
/**
* Removes a record from the translation group lookup table.
* Makes no assumptions on other records in the group - meaning
* if this happens to be the last record assigned to the group,
* this group ceases to exist.
*/
public function removeTranslationGroup() {
$baseDataClass = ClassInfo::baseDataClass($this->owner->class);
DB::query(
sprintf('DELETE FROM "%s_translationgroups" WHERE "OriginalID" = %d', $baseDataClass, $this->owner->ID)
);
}
/**
* Determine if a table needs Versioned support
* This is called at db/build time
*
* @param string $table Table name
* @return boolean
*/
function isVersionedTable($table) {
return false;
}
/**
* Note: The bulk of logic is in ModelAsController->getNestedController()
* and ContentController->handleRequest()
*/
function contentcontrollerInit($controller) {
$controller->Locale = Translatable::choose_site_locale();
}
function modelascontrollerInit($controller) {
//$this->contentcontrollerInit($controller);
}
function initgetEditForm($controller) {
$this->contentcontrollerInit($controller);
}
/**
* Recursively creates translations for parent pages in this language
* if they aren't existing already. This is a necessity to make
* nested pages accessible in a translated CMS page tree.
* It would be more userfriendly to grey out untranslated pages,
* but this involves complicated special cases in AllChildrenIncludingDeleted().
*
* {@link SiteTree->onBeforeWrite()} will ensure that each translation will get
* a unique URL across languages, by means of {@link SiteTree::get_by_link()}
* and {@link Translatable->alternateGetByURL()}.
*/
function onBeforeWrite() {
// If language is not set explicitly, set it to current_locale.
// This might be a bit overzealous in assuming the language
// of the content, as a "single language" website might be expanded
// later on. See {@link requireDefaultRecords()} for batch setting
// of empty Locale columns on each dev/build call.
if(!$this->owner->Locale) {
$this->owner->Locale = Translatable::get_current_locale();
}
// Specific logic for SiteTree subclasses.
// If page has untranslated parents, create (unpublished) translations
// of those as well to avoid having inaccessible children in the sitetree.
// Caution: This logic is very sensitve to infinite loops when translation status isn't determined properly
// If a parent for the newly written translation was existing before this
// onBeforeWrite() call, it will already have been linked correctly through createTranslation()
if(
class_exists('SiteTree')
&& $this->owner->hasField('ParentID')
&& $this->owner instanceof SiteTree
) {
if(
!$this->owner->ID
&& $this->owner->ParentID
&& !$this->owner->Parent()->hasTranslation($this->owner->Locale)
) {
$parentTranslation = $this->owner->Parent()->createTranslation($this->owner->Locale);
$this->owner->ParentID = $parentTranslation->ID;
}
}
// Has to be limited to the default locale, the assumption is that the "page type"
// dropdown is readonly on all translations.
if($this->owner->ID && $this->owner->Locale == Translatable::default_locale()) {
$changedFields = $this->owner->getChangedFields();
if(isset($changedFields['ClassName'])) {
$this->owner->ClassName = $changedFields['ClassName']['before'];
$translations = $this->owner->getTranslations();
$this->owner->ClassName = $changedFields['ClassName']['after'];
if($translations) foreach($translations as $translation) {
$translation->setClassName($this->owner->ClassName);
$translation = $translation->newClassInstance($translation->ClassName);
$translation->populateDefaults();
$translation->forceChange();
$translation->write();
}
}
}
// see onAfterWrite()
if(!$this->owner->ID) {
$this->owner->_TranslatableIsNewRecord = true;
}
}
function onAfterWrite() {
// hacky way to determine if the record was created in the database,
// or just updated
if($this->owner->_TranslatableIsNewRecord) {
// this would kick in for all new records which are NOT
// created through createTranslation(), meaning they don't
// have the translation group automatically set.
$translationGroupID = $this->getTranslationGroup();
if(!$translationGroupID) {
$this->addTranslationGroup(
$this->owner->_TranslationGroupID ? $this->owner->_TranslationGroupID : $this->owner->ID
);
}
unset($this->owner->_TranslatableIsNewRecord);
unset($this->owner->_TranslationGroupID);
}
}
/**
* Remove the record from the translation group mapping.
*/
function onBeforeDelete() {
// @todo Coupling to Versioned, we need to avoid removing
// translation groups if records are just deleted from a stage
// (="unpublished"). Ideally the translation group tables would
// be specific to different Versioned changes, making this restriction unnecessary.
// This will produce orphaned translation group records for SiteTree subclasses.
if(!$this->owner->hasExtension('Versioned')) {
$this->removeTranslationGroup();
}
parent::onBeforeDelete();
}
/**
* Attempt to get the page for a link in the default language that has been translated.
*
* @param string $URLSegment
* @param int|null $parentID
* @return SiteTree
*/
public function alternateGetByLink($URLSegment, $parentID) {
// If the parentID value has come from a translated page,
// then we need to find the corresponding parentID value
// in the default Locale.
if (
is_int($parentID)
&& $parentID > 0
&& ($parent = DataObject::get_by_id('SiteTree', $parentID))
&& ($parent->isTranslation())
) {
$parentID = $parent->getTranslationGroup();
}
// Find the locale language-independent of the page
self::disable_locale_filter();
$default = SiteTree::get()->where(sprintf (
'"URLSegment" = \'%s\'%s',
Convert::raw2sql($URLSegment),
(is_int($parentID) ? " AND \"ParentID\" = $parentID" : null)
))->First();
self::enable_locale_filter();
return $default;
}
//-----------------------------------------------------------------------------------------------//
/**
* If the record is not shown in the default language, this method
* will try to autoselect a master language which is shown alongside
* the normal formfields as a readonly representation.
* This gives translators a powerful tool for their translation workflow
* without leaving the translated page interface.
* Translatable also adds a new tab "Translation" which shows existing
* translations, as well as a formaction to create new translations based
* on a dropdown with available languages.
*
* @todo This is specific to SiteTree and CMSMain
* @todo Implement a special "translation mode" which triggers display of the
* readonly fields, so you can translation INTO the "default language" while
* seeing readonly fields as well.
*/
function updateCMSFields(FieldList $fields) {
$this->addTranslatableFields($fields);
// Show a dropdown to create a new translation.
// This action is possible both when showing the "default language"
// and a translation. Include the current locale (record might not be saved yet).
$alreadyTranslatedLocales = $this->getTranslatedLocales();
$alreadyTranslatedLocales[$this->owner->Locale] = $this->owner->Locale;
$alreadyTranslatedLocales = array_combine($alreadyTranslatedLocales, $alreadyTranslatedLocales);
$fields->addFieldsToTab(
'Root',
new Tab('Translations', _t('Translatable.TRANSLATIONS', 'Translations'),
new HeaderField('CreateTransHeader', _t('Translatable.CREATE', 'Create new translation'), 2),
$langDropdown = new LanguageDropdownField(
"NewTransLang",
_t('Translatable.NEWLANGUAGE', 'New language'),
$alreadyTranslatedLocales,
'SiteTree',
'Locale-English',
$this->owner
),
$createButton = new InlineFormAction(
'createtranslation',
_t('Translatable.CREATEBUTTON', 'Create')
)
)
);
$createButton->includeDefaultJS(false);
if($alreadyTranslatedLocales) {
$fields->addFieldToTab(
'Root.Translations',
new HeaderField('ExistingTransHeader', _t('Translatable.EXISTING', 'Existing translations:'), 3)
);
$existingTransHTML = '<ul>';
foreach($alreadyTranslatedLocales as $langCode) {
$existingTranslation = $this->owner->getTranslation($langCode);
if($existingTranslation && $existingTranslation->hasMethod('CMSEditLink')) {
$existingTransHTML .= sprintf('<li><a href="%s">%s</a></li>',
sprintf('%s/?locale=%s', $existingTranslation->CMSEditLink(), $langCode),
i18n::get_locale_name($langCode)
);
}
}
$existingTransHTML .= '</ul>';
$fields->addFieldToTab(
'Root.Translations',
new LiteralField('existingtrans',$existingTransHTML)
);
}
$langDropdown->addExtraClass('languageDropdown no-change-track');
$createButton->addExtraClass('createTranslationButton');
}
function updateSettingsFields(&$fields) {
$this->addTranslatableFields($fields);
}
protected function addTranslatableFields(&$fields) {
// used in LeftAndMain->init() to set language state when reading/writing record
$fields->push(new HiddenField("Locale", "Locale", $this->owner->Locale));
// Don't apply these modifications for normal DataObjects - they rely on CMSMain logic
if(!class_exists('SiteTree')) return;
if(!($this->owner instanceof SiteTree)) return;
// Don't allow translation of virtual pages because of data inconsistencies (see #5000)
if(class_exists('VirtualPage')){
$excludedPageTypes = array('VirtualPage');
foreach($excludedPageTypes as $excludedPageType) {
if(is_a($this->owner, $excludedPageType)) return;
}
}
// TODO Remove hardcoding for SiteTree properties
$excludeFields = array(
'ViewerGroups',
'EditorGroups',
'CanViewType',
'CanEditType'
);
// if a language other than default language is used, we're in "translation mode",
// hence have to modify the original fields
$creating = false;
$baseClass = $this->owner->class;
$allFields = $fields->toArray();
while( ($p = get_parent_class($baseClass)) != "DataObject") $baseClass = $p;
// try to get the record in "default language"
$originalRecord = $this->owner->getTranslation(Translatable::default_locale());
// if no translation in "default language", fall back to first translation
if(!$originalRecord) {
$translations = $this->owner->getTranslations();
$originalRecord = ($translations) ? $translations->First() : null;
}
$isTranslationMode = $this->owner->Locale != Translatable::default_locale();
if($originalRecord && $isTranslationMode) {
$originalLangID = Session::get($this->owner->ID . '_originalLangID');
// Remove parent page dropdown
$fields->removeByName("ParentType");
$fields->removeByName("ParentID");
$translatableFieldNames = $this->getTranslatableFields();
$allDataFields = $fields->dataFields();
$transformation = new Translatable_Transformation($originalRecord);
// iterate through sequential list of all datafields in fieldset
// (fields are object references, so we can replace them with the translatable CompositeField)
foreach($allDataFields as $dataField) {
if($dataField instanceof HiddenField) continue;
if(in_array($dataField->getName(), $excludeFields)) continue;
if(in_array($dataField->getName(), $translatableFieldNames)) {
// if the field is translatable, perform transformation
$fields->replaceField($dataField->getName(), $transformation->transformFormField($dataField));
} else {
// else field shouldn't be editable in translation-mode, make readonly
$fields->replaceField($dataField->getName(), $dataField->performReadonlyTransformation());
}
}
} elseif($this->owner->isNew()) {
$fields->addFieldsToTab(
'Root',
new Tab(_t('Translatable.TRANSLATIONS', 'Translations'),
new LiteralField('SaveBeforeCreatingTranslationNote',
sprintf('<p class="message">%s</p>',
_t('Translatable.NOTICENEWPAGE', 'Please save this page before creating a translation')
)
)
)
);
}
}
/**
* Get the names of all translatable fields on this class
* as a numeric array.
* @todo Integrate with blacklist once branches/translatable is merged back.
*
* @return array
*/
function getTranslatableFields() {
return $this->translatableFields;
}
/**
* Return the base table - the class that directly extends DataObject.
* @return string
*/
function baseTable($stage = null) {
$tableClasses = ClassInfo::dataClassesFor($this->owner->class);
$baseClass = array_shift($tableClasses);
return (!$stage || $stage == $this->defaultStage) ? $baseClass : $baseClass . "_$stage";
}
function extendWithSuffix($table) {
return $table;
}
/**
* Gets all related translations for the current object,
* excluding itself. See {@link getTranslation()} to retrieve
* a single translated object.
*
* Getter with $stage parameter is specific to {@link Versioned} extension,
* mostly used for {@link SiteTree} subclasses.
*
* @param string $locale
* @param string $stage
* @return DataObjectSet
*/
function getTranslations($locale = null, $stage = null) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
if($this->owner->exists()) {
// HACK need to disable language filtering in augmentSQL(),
// as we purposely want to get different language
self::disable_locale_filter();
$translationGroupID = $this->getTranslationGroup();
$baseDataClass = ClassInfo::baseDataClass($this->owner->class);
$filter = sprintf('"%s_translationgroups"."TranslationGroupID" = %d', $baseDataClass, $translationGroupID);
if($locale) {
$filter .= sprintf(' AND "%s"."Locale" = \'%s\'', $baseDataClass, Convert::raw2sql($locale));
} else {
// exclude the language of the current owner
$filter .= sprintf(' AND "%s"."Locale" != \'%s\'', $baseDataClass, $this->owner->Locale);
}
$currentStage = Versioned::current_stage();
$joinOnClause = sprintf('"%s_translationgroups"."OriginalID" = "%s"."ID"', $baseDataClass, $baseDataClass);
if($this->owner->hasExtension("Versioned")) {
if($stage) Versioned::reading_stage($stage);
$translations = Versioned::get_by_stage(
$this->owner->class,
Versioned::current_stage(),
$filter,
null
)->leftJoin("{$baseDataClass}_translationgroups", $joinOnClause);
if($stage) Versioned::reading_stage($currentStage);
} else {
$class = $this->owner->class;
$translations = $class::get()
->where($filter)
->leftJoin("{$baseDataClass}_translationgroups", $joinOnClause);
}
self::enable_locale_filter();
return $translations;
}
}
/**
* Gets an existing translation based on the language code.
* Use {@link hasTranslation()} as a quicker alternative to check
* for an existing translation without getting the actual object.
*
* @param String $locale
* @return DataObject Translated object
*/
function getTranslation($locale, $stage = null) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
$translations = $this->getTranslations($locale, $stage);
return ($translations) ? $translations->First() : null;
}
/**
* When the SiteConfig object is automatically instantiated, we should ensure that
* 1. All SiteConfig objects belong to the same group
* 2. Defaults are correctly initiated from the base object
* 3. The creation mechanism uses the createTranslation function in order to be consistent
* This function ensures that any already created "vanilla" SiteConfig object is populated
* correctly with translated values.
* This function DOES populate the ID field with the newly created object ID
* @see SiteConfig
*/
protected function populateSiteConfigDefaults() {
// Work-around for population of defaults during database initialisation.
// When the database is being setup singleton('SiteConfig') is called.
if(!DB::getConn()->hasTable($this->owner->class)) return;
if(!DB::getConn()->hasField($this->owner->class, 'Locale')) return;
// Find the best base translation for SiteConfig
Translatable::disable_locale_filter();
$existingConfig = SiteConfig::get()->filter(array(
'Locale' => Translatable::default_locale()
))->first();
if(!$existingConfig) $existingConfig = SiteConfig::get()->first();
Translatable::enable_locale_filter();
// Stage this SiteConfig and copy into the current object
if(
$existingConfig
// Double-up of SiteConfig in the same locale can be ignored. Often caused by singleton(SiteConfig)
&& !$existingConfig->getTranslation(Translatable::get_current_locale())
// If translation is not allowed by the current user then do not
// allow this code to attempt any behind the scenes translation.
&& $existingConfig->canTranslate(null, Translatable::get_current_locale())
) {
// Create an unsaved "staging" translated object using the correct createTranslation mechanism
$stagingConfig = $existingConfig->createTranslation(Translatable::get_current_locale(), false);
$this->owner->update($stagingConfig->toMap());
}
// Maintain single translation group for SiteConfig
if($existingConfig) {
$this->owner->_TranslationGroupID = $existingConfig->getTranslationGroup();
}
$this->owner->Locale = Translatable::get_current_locale();
}
/**
* Enables automatic population of SiteConfig fields using createTranslation if
* created outside of the Translatable module
* @var boolean
*/
public static $enable_siteconfig_generation = true;
/**
* Hooks into the DataObject::populateDefaults() method
*/
public function populateDefaults() {
if (
empty($this->owner->ID)
&& ($this->owner instanceof SiteConfig)
&& self::$enable_siteconfig_generation
) {
// Use enable_siteconfig_generation to prevent infinite loop during object creation
self::$enable_siteconfig_generation = false;
$this->populateSiteConfigDefaults();
self::$enable_siteconfig_generation = true;
}
}
/**
* Creates a new translation for the owner object of this decorator.
* Checks {@link getTranslation()} to return an existing translation
* instead of creating a duplicate. Writes the record to the database before
* returning it. Use this method if you want the "translation group"
* mechanism to work, meaning that an object knows which group of translations
* it belongs to. For "original records" which are not created through this
* method, the "translation group" is set in {@link onAfterWrite()}.
*
* @param string $locale Target locale to translate this object into
* @param boolean $saveTranslation Flag indicating whether the new record
* should be saved to the database.
* @return DataObject The translated object
*/
function createTranslation($locale, $saveTranslation = true) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
if(!$this->owner->exists()) {
user_error(
'Translatable::createTranslation(): Please save your record before creating a translation',
E_USER_ERROR
);
}
// permission check
if(!$this->owner->canTranslate(null, $locale)) {
throw new Exception(sprintf(
'Creating a new translation in locale "%s" is not allowed for this user',
$locale
));
return;
}
$existingTranslation = $this->getTranslation($locale);
if($existingTranslation) return $existingTranslation;
$class = $this->owner->class;
$newTranslation = new $class;
// copy all fields from owner (apart from ID)
$newTranslation->update($this->owner->toMap());
// If the object has Hierarchy extension,
// check for existing translated parents and assign
// their ParentID (and overwrite any existing ParentID relations
// to parents in other language). If no parent translations exist,
// they are automatically created in onBeforeWrite()
if($newTranslation->hasField('ParentID')) {
$origParent = $this->owner->Parent();
$newTranslationParent = $origParent->getTranslation($locale);
if($newTranslationParent) $newTranslation->ParentID = $newTranslationParent->ID;
}
$newTranslation->ID = 0;
$newTranslation->Locale = $locale;
$originalPage = $this->getTranslation(self::default_locale());
if ($originalPage) {
$urlSegment = $originalPage->URLSegment;
} else {
$urlSegment = $newTranslation->URLSegment;
}
$newTranslation->URLSegment = $urlSegment . '-' . i18n::convert_rfc1766($locale);
// hacky way to set an existing translation group in onAfterWrite()
$translationGroupID = $this->getTranslationGroup();
$newTranslation->_TranslationGroupID = $translationGroupID ? $translationGroupID : $this->owner->ID;
if($saveTranslation) $newTranslation->write();
return $newTranslation;
}
/**
* Caution: Does not consider the {@link canEdit()} permissions.
*
* @param DataObject|int $member
* @param string $locale
* @return boolean
*/
function canTranslate($member = null, $locale) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
if(!$member || !(is_a($member, 'Member')) || is_numeric($member)) $member = Member::currentUser();
// check for locale
$allowedLocale = (
!is_array(self::get_allowed_locales())
|| in_array($locale, self::get_allowed_locales())
);
if(!$allowedLocale) return false;
// By default, anyone who can edit a page can edit the default locale
if($locale == self::default_locale()) return true;
// check for generic translation permission
if(Permission::checkMember($member, 'TRANSLATE_ALL')) return true;
// check for locale specific translate permission
if(!Permission::checkMember($member, 'TRANSLATE_' . $locale)) return false;
return true;
}
/**
* @return boolean
*/
function canEdit($member) {
if(!$this->owner->Locale) return null;
return $this->owner->canTranslate($member, $this->owner->Locale) ? null : false;
}
/**
* Returns TRUE if the current record has a translation in this language.
* Use {@link getTranslation()} to get the actual translated record from
* the database.
*
* @param string $locale
* @return boolean
*/
function hasTranslation($locale) {
if($locale && !i18n::validate_locale($locale)) {
throw new InvalidArgumentException(sprintf('Invalid locale "%s"', $locale));
}
return (
$this->owner->Locale == $locale
|| array_search($locale, $this->getTranslatedLocales()) !== false
);
}
function AllChildrenIncludingDeleted($context = null) {
$children = $this->owner->doAllChildrenIncludingDeleted($context);
return $children;
}
/**
* Returns <link rel="alternate"> markup for insertion into
* a HTML4/XHTML compliant <head> section, listing all available translations
* of a page.
*
* @see http://www.w3.org/TR/html4/struct/links.html#edef-LINK
* @see http://www.w3.org/International/articles/language-tags/
*
* @return string HTML
*/
function MetaTags(&$tags) {
$template = '<link rel="alternate" type="text/html" title="%s" hreflang="%s" href="%s" />' . "\n";
$translations = $this->owner->getTranslations();
if($translations) foreach($translations as $translation) {
$tags .= sprintf($template,
Convert::raw2xml($translation->Title),
i18n::convert_rfc1766($translation->Locale),
$translation->AbsoluteLink()
);
}
}
function providePermissions() {
if(!Object::has_extension('SiteTree', 'Translatable') || !class_exists('SiteTree')) return false;
$locales = self::get_allowed_locales();
// Fall back to any locales used in existing translations (see #4939)
if(!$locales) {
$locales = DB::query('SELECT "Locale" FROM "SiteTree" GROUP BY "Locale"')->column();
}
$permissions = array();
if($locales) foreach($locales as $locale) {
$localeName = i18n::get_locale_name($locale);
$permissions['TRANSLATE_' . $locale] = sprintf(
_t(
'Translatable.TRANSLATEPERMISSION',
'Translate %s',
'Translate pages into a language'
),
$localeName
);
}
$permissions['TRANSLATE_ALL'] = _t(
'Translatable.TRANSLATEALLPERMISSION',
'Translate into all available languages'
);
return $permissions;
}
/**
* Get a list of languages with at least one element translated in (including the default language)
*
* @param string $className Look for languages in elements of this class
* @param string $where Optional SQL WHERE statement
* @return array Map of languages in the form locale => langName
*/
static function get_existing_content_languages($className = 'SiteTree', $where = '') {
$baseTable = ClassInfo::baseDataClass($className);
$query = new SQLQuery("Distinct \"Locale\"","\"$baseTable\"",$where, '', "\"Locale\"");
$dbLangs = $query->execute()->column();
$langlist = array_merge((array)Translatable::default_locale(), (array)$dbLangs);
$returnMap = array();
$allCodes = array_merge(i18n::$all_locales, i18n::$common_locales);
foreach ($langlist as $langCode) {
if($langCode && isset($allCodes[$langCode])) {
if(is_array($allCodes[$langCode])) {
$returnMap[$langCode] = $allCodes[$langCode][0];
} else {
$returnMap[$langCode] = $allCodes[$langCode];
}
}
}
return $returnMap;
}
/**
* Get the RelativeLink value for a home page in another locale. This is found by searching for the default home
* page in the default language, then returning the link to the translated version (if one exists).
*
* @return string
*/
public static function get_homepage_link_by_locale($locale) {
$originalLocale = self::get_current_locale();
self::set_current_locale(self::default_locale());
$original = SiteTree::get_by_link(RootURLController::get_default_homepage_link());
self::set_current_locale($originalLocale);
if($original) {
if($translation = $original->getTranslation($locale)) return trim($translation->RelativeLink(true), '/');
}
}
/**
* @deprecated 2.4 Use {@link Translatable::get_homepage_link_by_locale()}
*/
static function get_homepage_urlsegment_by_locale($locale) {
user_error (
'Translatable::get_homepage_urlsegment_by_locale() is deprecated, please use get_homepage_link_by_locale()',
E_USER_NOTICE
);
return self::get_homepage_link_by_locale($locale);
}
/**
* Define all locales which in which a new translation is allowed.
* Checked in {@link canTranslate()}.
*
* @param array List of allowed locale codes (see {@link i18n::$all_locales}).
* Example: array('de_DE','ja_JP')
*/
static function set_allowed_locales($locales) {
self::$allowed_locales = $locales;
}
/**
* Get all locales which are generally permitted to be translated.
* Use {@link canTranslate()} to check if a specific member has permission
* to translate a record.
*
* @return array
*/
static function get_allowed_locales() {
return self::$allowed_locales;
}
/**
* @deprecated 2.4 Use get_homepage_urlsegment_by_locale()
*/
static function get_homepage_urlsegment_by_language($locale) {
return self::get_homepage_urlsegment_by_locale($locale);
}
/**
* @deprecated 2.4 Use custom check: self::$default_locale == self::get_current_locale()
*/
static function is_default_lang() {
return (self::$default_locale == self::get_current_locale());
}
/**
* @deprecated 2.4 Use set_default_locale()
*/
static function set_default_lang($lang) {
self::set_default_locale(i18n::get_locale_from_lang($lang));
}
/**
* @deprecated 2.4 Use get_default_locale()
*/
static function get_default_lang() {
return i18n::get_lang_from_locale(self::default_locale());
}
/**
* @deprecated 2.4 Use get_current_locale()
*/
static function current_lang() {
return i18n::get_lang_from_locale(self::get_current_locale());
}
/**
* @deprecated 2.4 Use set_current_locale()
*/
static function set_reading_lang($lang) {
self::set_current_locale(i18n::get_locale_from_lang($lang));
}
/**
* @deprecated 2.4 Use get_reading_locale()
*/
static function get_reading_lang() {
return i18n::get_lang_from_locale(self::get_reading_locale());
}
/**
* @deprecated 2.4 Use default_locale()
*/
static function default_lang() {
return i18n::get_lang_from_locale(self::default_locale());
}
/**
* @deprecated 2.4 Use get_by_locale()
*/
static function get_by_lang($class, $lang, $filter = '', $sort = '',
$join = "", $limit = "", $containerClass = "DataObjectSet", $having = ""
) {
return self::get_by_locale(
$class, i18n::get_locale_from_lang($lang), $filter,
$sort, $join, $limit, $containerClass, $having
);
}
/**
* @deprecated 2.4 Use get_one_by_locale()
*/
static function get_one_by_lang($class, $lang, $filter = '', $cache = false, $orderby = "") {
return self::get_one_by_locale($class, i18n::get_locale_from_lang($lang), $filter, $cache, $orderby);
}
/**
* Determines if the record has a locale,
* and if this locale is different from the "default locale"
* set in {@link Translatable::default_locale()}.
* Does not look at translation groups to see if the record
* is based on another record.
*
* @return boolean
* @deprecated 2.4
*/
function isTranslation() {
return ($this->owner->Locale && ($this->owner->Locale != Translatable::default_locale()));
}
/**
* @deprecated 2.4 Use choose_site_locale()
*/
static function choose_site_lang($langsAvail=null) {
return self::choose_site_locale($langsAvail);
}
/**
* @deprecated 2.4 Use getTranslatedLocales()
*/
function getTranslatedLangs() {
return $this->getTranslatedLocales();
}
/**
* Return a piece of text to keep DataObject cache keys appropriately specific
*/
function cacheKeyComponent() {
return 'locale-'.self::get_current_locale();
}
/**
* Extends the SiteTree::validURLSegment() method, to do checks appropriate
* to Translatable
*
* @return bool
*/
public function augmentValidURLSegment() {
if(self::locale_filter_enabled()) {
self::disable_locale_filter();
$reEnableFilter = true;
}
$IDFilter = ($this->owner->ID) ? "AND \"SiteTree\".\"ID\" <> {$this->owner->ID}" : null;
$parentFilter = null;
if(SiteTree::nested_urls()) {
if($this->owner->ParentID) {
$parentFilter = " AND \"SiteTree\".\"ParentID\" = {$this->owner->ParentID}";
} else {
$parentFilter = ' AND "SiteTree"."ParentID" = 0';
}
}
$existingPage = SiteTree::get()
// disable get_one cache, as this otherwise may pick up results from when locale_filter was on
->where("\"URLSegment\" = '{$this->owner->URLSegment}' $IDFilter $parentFilter")->First();
if($reEnableFilter) self::enable_locale_filter();
return !$existingPage;
}
}
/**
* Transform a formfield to a "translatable" representation,
* consisting of the original formfield plus a readonly-version
* of the original value, wrapped in a CompositeField.
*
* @param DataObject $original Needs the original record as we populate
* the readonly formfield with the original value
*
* @package sapphire
* @subpackage misc
*/
class Translatable_Transformation extends FormTransformation {
/**
* @var DataObject
*/
private $original = null;
function __construct(DataObject $original) {
$this->original = $original;
parent::__construct();
}
/**
* Returns the original DataObject attached to the Transformation
*
* @return DataObject
*/
function getOriginal() {
return $this->original;
}
/**
* @todo transformTextareaField() not used at the moment
*/
function transformTextareaField(TextareaField $field) {
$nonEditableField = new ToggleField($fieldname,$field->Title(),'','+','-');
$nonEditableField->labelMore = '+';
$nonEditableField->labelLess = '-';
return $this->baseTransform($nonEditableField, $field);
return $nonEditableField;
}
function transformFormField(FormField $field) {
$newfield = $field->performReadOnlyTransformation();
return $this->baseTransform($newfield, $field);
}
protected function baseTransform($nonEditableField, $originalField) {
$fieldname = $originalField->getName();
$nonEditableField_holder = new CompositeField($nonEditableField);
$nonEditableField_holder->setName($fieldname.'_holder');
$nonEditableField_holder->addExtraClass('originallang_holder');
$nonEditableField->setValue($this->original->$fieldname);
$nonEditableField->setName($fieldname.'_original');
$nonEditableField->addExtraClass('originallang');
$nonEditableField->setTitle('Original '.$originalField->Title());
$nonEditableField_holder->insertBefore($originalField, $fieldname.'_original');
return $nonEditableField_holder;
}
}
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