* static $extensions = array( * "Translatable('MyTranslatableVarchar', 'OtherTranslatableText')" * ); * * * 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. * * @author Bernat Foj Capell * @author Michael Gall * @author Ingo Schommer * * @package sapphire * @subpackage misc */ class Translatable extends DataObjectDecorator { /** * Indicates if the multilingual feature is enabled * * @var boolean */ protected static $enabled = false; /** * The 'default' language. * @var string */ protected static $default_lang = 'en'; /** * The language in which we are reading dataobjects. * Usually stored in session, specific to the "site mode": * either 'site' or 'cms'. * @see Director::get_site_mode() * @var string */ protected static $reading_lang = null; /** * Indicates if the start language has been determined using choose_site_lang * @var boolean */ protected static $language_decided = false; /** * Indicates whether the 'Lang' transformation when modifying queries should be bypassed * If it's true * * @var boolean */ protected static $bypass = false; /** * A cached list of existing tables * * @var mixed */ protected static $tableList = null; /** * Dataobject's original ID when we're creating a new language version of an object * * @var unknown_type */ protected static $creatingFromID; /** * An array of fields that can be translated. * @var array */ protected $translatableFields; /** * A map of the field values of the original (untranslated) DataObject record * @var array */ protected $original_values = null; /** * Overloaded getter for $Lang property. * Not all pages in the database have their language property explicitly set, * so we fall back to {@link Translatable::default_lang()}. */ function getLang() { return ($this->owner->getField('Lang')) ? $this->owner->getField('Lang') : Translatable::default_lang(); } /** * Choose the language the site is currently on. * If $_GET['lang'] or $_COOKIE['lang'] is set, then it will use that language, and store it in the session. * Otherwise it checks the session for a possible stored language, either from namespace to the site_mode * ('site' or 'cms'), or for a 'global' language setting. * The final option is the member preference. * * @uses Director::get_site_mode() * * @param $langsAvailable array A numerical array of languages which are valid choices (optional) * @return string Selected language (also saved in $reading_lang). */ static function choose_site_lang($langsAvailable = array()) { $siteMode = Director::get_site_mode(); // either 'cms' or 'site' if(self::$reading_lang) { self::$language_decided = true; return self::$reading_lang; } if((isset($_GET['lang']) && !$langsAvailable) || (isset($_GET['lang']) && in_array($_GET['lang'], $langsAvailable))) { // get from GET parameter self::set_reading_lang($_GET['lang']); } else { self::set_reading_lang(self::default_lang()); } self::$language_decided = true; return self::$reading_lang; } /** * 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_lang() { return self::$default_lang; } /** * Set default language. * * @param $lang String */ static function set_default_lang($lang) { self::$default_lang = $lang; } /** * Check whether the default and current reading language are the same. * @return boolean Return true if both default and reading language are the same. */ static function is_default_lang() { return (!self::current_lang() || self::$default_lang == self::current_lang()); } /** * Get the current reading language. * @return string */ static function current_lang() { if (!self::$language_decided) self::choose_site_lang(); return self::$reading_lang; } /** * Set the reading language, either namespaced to 'site' (website content) * or 'cms' (management backend). * * @param string $lang New reading language. */ static function set_reading_lang($lang) { //Session::set('currentLang',$lang); self::$reading_lang = $lang; } /** * Get a singleton instance of a class in the given language. * @param string $class The name of the class. * @param string $lang 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 $orderby A sort expression to be inserted into the ORDER BY clause. * @return DataObject */ static function get_one_by_lang($class, $lang, $filter = '', $cache = false, $orderby = "") { $orig = Translatable::current_lang(); Translatable::set_reading_lang($lang); $do = DataObject::get_one($class, $filter, $cache, $orderby); Translatable::set_reading_lang($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 $lang 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 $having A filter to be inserted into the HAVING clause. * @return mixed The objects matching the conditions. */ static function get_by_lang($class, $lang, $filter = '', $sort = '', $join = "", $limit = "", $containerClass = "DataObjectSet", $having = "") { $oldLang = self::current_lang(); self::set_reading_lang($lang); $result = DataObject::get($class, $filter, $sort, $join, $limit, $containerClass, $having); self::set_reading_lang($oldLang); return $result; } /** * Get a record in his original language version. * @param string $class The name of the class. * @param string $originalLangID The original record id. * @return DataObject */ static function get_original($class, $originalLangID) { $baseClass = $class; while( ($p = get_parent_class($baseClass)) != "DataObject") $baseClass = $p; return self::get_one_by_lang($class,self::default_lang(),"\"$baseClass\".\"ID\" = $originalLangID"); } /** * Gets all translations for this specific page. * Doesn't include the original language code ({@link Translatable::default_lang()}). * * @return array Numeric array of all language codes, sorted alphabetically. */ function getTranslatedLangs() { $langs = array(); $class = ClassInfo::baseDataClass($this->owner->class); //Base Class if($this->owner->hasExtension("Versioned") && Versioned::current_stage() == "Live") { $class = $class."_Live"; } // if called on a translation, we use $OriginalID, otherwise use $id $id = ($this->owner->Lang && $this->owner->Lang != Translatable::default_lang()) ? $this->owner->OriginalID : $this->owner->ID; if(is_numeric($id)) { $query = new SQLQuery('distinct Lang',"$class","(\"$class\".\"OriginalID\" =$id)"); $langs = $query->execute()->column(); } if($langs) { $langCodes = array_values($langs); sort($langCodes); return $langCodes; } else { return array(); }; } /** * Get a list of languages in which a given element has been translated * * @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 ? $do->getTranslatedLangs() : array()); } /** * Enables the multilingual feature * */ static function enable() { self::$enabled = true; } /** * Disable the multilingual feature * */ static function disable() { self::$enabled = false; } /** * Check whether multilingual support has been enabled * * @return boolean True if enabled */ static function is_enabled() { return self::$enabled; } /** * When creating, set the original ID value * * @param int $id */ static function creating_from($id) { self::$creatingFromID = $id; } //-----------------------------------------------------------------------------------------------// /** * 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(Object $owner) { parent::setOwner($owner); // setting translatable fields by inspecting owner - this should really be done in the constructor $this->translatableFields = array_keys($this->owner->inheritedDatabaseFields()); } function extraStatics() { if(!Translatable::is_enabled()) return; if(get_class($this->owner) == ClassInfo::baseDataClass(get_class($this->owner))) { return array( "db" => array( "Lang" => "Varchar(12)", "OriginalID" => "Int" ), "defaults" => array( "Lang" => Translatable::default_lang() ) ); } else { return array(); } } function findOriginalIDs() { if(!$this->isTranslation()) { $query = new SQLQuery("ID", ClassInfo::baseDataClass($this->owner->class), array("OriginalID = ".$this->owner->ID) ); $ret = $query->execute()->column(); } else { return array(); } } function augmentSQL(SQLQuery &$query) { if(!Translatable::is_enabled()) return; $lang = Translatable::current_lang(); $baseTable = ClassInfo::baseDataClass($this->owner->class); $where = $query->where; if( $lang && !$query->filtersOnID() // DataObject::get_by_id() should work independently of language && array_search($baseTable, array_keys($query->from)) !== false && !$this->isTranslation() //&& !$query->filtersOnFK() ) { $qry = "\"Lang\" = '$lang'"; if(Translatable::is_default_lang()) { $qry .= " OR \"Lang\" = '' "; $qry .= " OR \"Lang\" IS NULL "; } $query->where[] = $qry; } } function augmentNumChildrenCountQuery(SQLQuery $query) { if(!Translatable::is_enabled()) return; if($this->isTranslation()) { $query->where[0] = '"ParentID" = '.$this->getOriginalPage()->ID; } } /** * @var SiteTree $cache_originalPage Cached representation of the original page for this translation * (if at all in translation mode) */ private $cache_originalPage = null; function setOriginalPage($original) { if($original instanceof DataObject) { $this->owner->OriginalID = $original->ID; } else { $this->owner->OriginalID = $original; } } function getOriginalPage() { if($this->isTranslation()) { if(!$this->cache_originalPage) { $orig = Translatable::current_lang(); Translatable::set_reading_lang(Translatable::default_lang()); $this->cache_originalPage = DataObject::get_by_id($this->owner->class, $this->owner->OriginalID); Translatable::set_reading_lang($orig); } return $this->cache_originalPage; } else { return $this->owner; } } function isTranslation() { return ($this->owner->Lang && ($this->owner->Lang != Translatable::default_lang())/* && $this->owner->exists()*/); } /** * 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; } function contentcontrollerInit($controller) { if(!Translatable::is_enabled()) return; Translatable::choose_site_lang(); $controller->Lang = Translatable::current_lang(); } function modelascontrollerInit($controller) { if(!Translatable::is_enabled()) return; //$this->contentcontrollerInit($controller); } function initgetEditForm($controller) { if(!Translatable::is_enabled()) return; $this->contentcontrollerInit($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(). */ function onBeforeWrite() { if(!Translatable::is_enabled()) return; // Caution: This logic is very sensitve to eternal loops when translation status isn't determined properly if( !$this->owner->ID && $this->isTranslation() && $this->owner->ParentID && !$this->owner->Parent()->hasTranslation($this->owner->Lang) ) { $this->owner->Parent()->createTranslation($this->owner->Lang); } if(!$this->owner->ID && $this->isTranslation()) { $SQL_URLSegment = Convert::raw2sql($this->owner->URLSegment); $existingOriginalPage = Translatable::get_one_by_lang('SiteTree', Translatable::default_lang(), "\"URLSegment\" = '{$SQL_URLSegment}'"); if($existingOriginalPage) $this->owner->URLSegment .= "-{$this->owner->Lang}"; } } function alternateGetByUrl($urlSegment, $extraFilter, $cache = null, $orderby = null) { if(!Translatable::is_enabled()) return; $SQL_URLSegment = Convert::raw2sql($urlSegment); Translatable::disable(); $record = DataObject::get_one('SiteTree', "\"URLSegment\" = '{$SQL_URLSegment}'"); Translatable::enable(); return $record; } /* function augmentWrite(&$manipulation) { if(!Translatable::is_enabled()) return; if(!$this->isTranslation()) { $ids = $this->findOriginalIDs(); if(!$ids || count($ids) == 0) return; } $newManip = array(); foreach($manipulation as $table => $manip) { if(strpos($table, "_versions") !== false) continue; foreach($this->fieldBlackList as $blackField) { if(isset($manip["fields"][$blackField])) { if($this->isTranslation()) { unset($manip["fields"][$blackField]); } else { if(!isset($newManip[$table])) { $newManip[$table] = array("command" =>"update", "where" => "ID in (".implode(",", $ids).")", "fields" => array()); } $newManip[$table]["fields"][$blackField] = $manip["fields"][$blackField]; } } } } DB::manipulate($newManip); } */ //-----------------------------------------------------------------------------------------------// function updateCMSFields(FieldSet &$fields) { if(!Translatable::is_enabled()) return; // used in CMSMain->init() to set language state when reading/writing record $fields->push(new HiddenField("Lang", "Lang", $this->owner->Lang) ); $fields->push(new HiddenField("OriginalID", "OriginalID", $this->owner->OriginalID) ); // 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; $isTranslationMode = (Translatable::default_lang() != $this->owner->Lang && $this->owner->Lang); if($isTranslationMode) { $originalLangID = Session::get($this->owner->ID . '_originalLangID'); $translatableFieldNames = $this->getTranslatableFields(); $allDataFields = $fields->dataFields(); $originalRecord = $this->owner->getOriginalPage(); $transformation = new Translatable_Transformation($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->Name(), $translatableFieldNames)) { // if the field is translatable, perform transformation $fields->replaceField($dataField->Name(), $transformation->transformFormField($dataField)); } else { // else field shouldn't be editable in translation-mode, make readonly $fields->replaceField($dataField->Name(), $dataField->performReadonlyTransformation()); } } // add link back to original page $originalRecordLink = sprintf( _t('Translatable.ORIGINALLINK', 'Show original page in %s', PR_MEDIUM, 'Show in specific language'), i18n::get_language_name(Translatable::default_lang()) ); $originalRecordHTML = sprintf('

%s

', sprintf('admin/show/%d/?lang=%s', $originalRecord->ID, Translatable::default_lang()), $originalRecordLink ); $fields->addFieldsToTab( 'Root', new Tab(_t('Translatable.TRANSLATIONS', 'Translations'), new LiteralField('OriginalTranslationLink', $originalRecordHTML) ) ); } elseif($this->owner->isNew()) { $fields->addFieldsToTab( 'Root', new Tab(_t('Translatable.TRANSLATIONS', 'Translations'), new LiteralField('SaveBeforeCreatingTranslationNote', sprintf('

%s

', _t('Translatable.NOTICENEWPAGE', 'Please save this page before creating a translation') ) ) ) ); } else { // if we're not in "translation mode", show a dropdown to create a new translation. // this action should just be possible when showing the default language, // you can't create new translations from within a "translation mode" form. $alreadyTranslatedLangs = $this->getTranslatedLangs(); $fields->addFieldsToTab( 'Root', new Tab(_t('Translatable.TRANSLATIONS', 'Translations'), new HeaderField('CreateTransHeader', _t('Translatable.CREATE', 'Create new translation'), 2), $langDropdown = new LanguageDropdownField("NewTransLang", _t('Translatable.NEWLANGUAGE', 'New language'), $alreadyTranslatedLangs), $createButton = new InlineFormAction('createtranslation',_t('Translatable.CREATEBUTTON', 'Create')) ) ); if($alreadyTranslatedLangs) { $fields->addFieldToTab( 'Root.Translations', new HeaderField('ExistingTransHeader', _t('Translatable.EXISTING', 'Existing translations:'), 3) ); $existingTransHTML = '
    '; foreach($alreadyTranslatedLangs as $i => $langCode) { $existingTranslation = $this->owner->getTranslation($langCode); $existingTransHTML .= sprintf('
  • %s
  • ', sprintf('admin/show/%d/?lang=%s', $existingTranslation->ID, $langCode), i18n::get_language_name($langCode) ); } $existingTransHTML .= '
'; $fields->addFieldToTab( 'Root.Translations', new LiteralField('existingtrans',$existingTransHTML) ); } $langDropdown->addExtraClass('languageDropdown'); $createButton->addExtraClass('createTranslationButton'); // disable creation of new pages via javascript $createButton->includeDefaultJS(false); } } /** * Get a list of fields from the tables created by this extension * * @param string $table Name of the table * @return array Map where the keys are db, indexes and the values are the table fields */ function fieldsInExtraTables($table){ return array('db'=>null,'indexes'=>null); } /** * 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 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 $lang * @return DataObject Translated object */ function getTranslation($lang) { if($this->owner->exists() && !$this->owner->isTranslation()) { $orig = Translatable::current_lang(); $this->owner->flushCache(); Translatable::set_reading_lang($lang); $filter = array("`OriginalID` = '".$this->owner->ID."'"); if($this->owner->hasExtension("Versioned") && Versioned::current_stage()) { $translation = Versioned::get_one_by_stage($this->owner->class, Versioned::current_stage(), $filter); } else { $translation = DataObject::get_one($this->owner->class, $filter); } Translatable::set_reading_lang($orig); return $translation; } } /** * 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. * * @param string $lang * @return DataObject The translated object */ function createTranslation($lang) { $existingTranslation = $this->getTranslation($lang); if($existingTranslation) return $existingTranslation; $class = $this->owner->class; $newTranslation = new $class; $newTranslation->update($this->owner->toMap()); $newTranslation->ID = 0; $originalID = ($this->isTranslation()) ? $this->owner->OriginalID : $this->owner->ID; $newTranslation->setOriginalPage($originalID); $newTranslation->Lang = $lang; $newTranslation->write(); return $newTranslation; } /** * Returns TRUE if the current record has a translation in this language. * Use {@link getTranslation()} to get the actual translated record from * the database. * * @return boolean */ function hasTranslation($lang) { return (array_search($lang, $this->getTranslatedLangs()) !== false); } /* function augmentStageChildren(DataObjectSet $children, $showall = false) { if(!Translatable::is_enabled()) return; if($this->isTranslation()) { $children->merge($this->getOriginalPage()->stageChildren($showall)); } } */ function AllChildrenIncludingDeleted($context = null) { // if method is called on translated page, we have to get the children from the original. // otherwise it assumes the wrong ParentID connection if($this->owner->isTranslation()) { $children = $this->owner->getOriginalPage()->doAllChildrenIncludingDeleted($context); } else { $children = $this->owner->doAllChildrenIncludingDeleted($context); } return $children; } /** * If called with default language, doesn't affect the results. * Otherwise (called in translation mode) the method tries to find translations * for each page in its original language and replace the original. * The result will contain a mixture of translated and untranslated pages. * * Caution: We also create a method AllChildrenIncludingDeleted() dynamically in the class constructor. * * @param DataObjectSet $untranslatedChildren * @param Object $context */ /* function augmentAllChildrenIncludingDeleted(DataObjectSet $children, $context) { if(!Translatable::is_enabled()) return false; $find = array(); $replace = array(); if($context && $context->Lang && $context->Lang != Translatable::default_lang()) { if($children) { foreach($children as $child) { if($child->hasTranslation($context->Lang)) { $trans = $child->getTranslation($context->Lang); if($trans) { $find[] = $child; $replace[] = $trans; } } } foreach($find as $i => $found) { $children->replace($found, $replace[$i]); } } } } */ /** * Get a list of languages with at least one element translated in (including the default language) * * @param string $className Look for languages in elements of this class * @return array Map of languages in the form langCode => langName */ static function get_existing_content_languages($className = 'SiteTree', $where = '') { if(!Translatable::is_enabled()) return false; $baseTable = ClassInfo::baseDataClass($className); $query = new SQLQuery('Distinct Lang',$baseTable,$where,"",'Lang'); $dbLangs = $query->execute()->column(); $langlist = array_merge((array)Translatable::default_lang(), (array)$dbLangs); $returnMap = array(); $allCodes = array_merge(i18n::$all_locales, i18n::$common_languages); foreach ($langlist as $langCode) { if($langCode) $returnMap[$langCode] = (is_array($allCodes[$langCode]) ? $allCodes[$langCode][0] : $allCodes[$langCode]); } return $returnMap; } /** * Gets a URLSegment value for a homepage in another language. * The value is inferred by finding the homepage in default language * (as identified by RootURLController::$default_homepage_urlsegment). * Returns NULL if no translated page can be found. * * @param string $Lang * @return string|boolean URLSegment (e.g. "home") */ static function get_homepage_urlsegment_by_language($lang) { $origHomepageObj = Translatable::get_one_by_lang( 'SiteTree', Translatable::default_lang(), sprintf('"URLSegment" = \'%s\'', RootUrlController::get_default_homepage_urlsegment()) ); if($origHomepageObj) { $translatedHomepageObj = $origHomepageObj->getTranslation(Translatable::current_lang()); if($translatedHomepageObj) { return $translatedHomepageObj->URLSegment; } } return null; } } /** * 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->Name(); $nonEditableField_holder = new CompositeField($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; } } ?>