How to use Yii2 multilingual behavior - yii

Question

I’m having a problem using Yii2 multilingual behavior and I hope someone here can help me.
This is the my database
CREATE TABLE IF NOT EXISTS `post` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`created_at` datetime NOT NULL,
`updated_at` datetime NOT NULL,
`enabled` tinyint(1) NOT NULL DEFAULT '1',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE IF NOT EXISTS `postLang` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`post_id` int(11) NOT NULL,
`language` varchar(6) NOT NULL,
`title` varchar(255) NOT NULL,
`content` TEXT NOT NULL,
PRIMARY KEY (`id`),
KEY `post_id` (`post_id`),
KEY `language` (`language`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
ALTER TABLE `postLang`
ADD CONSTRAINT `postlang_ibfk_1` FOREIGN KEY (`post_id`) REFERENCES `post` (`id`) ON DELETE CASCADE ON UPDATE CASCADE;
And this PostlangController
use omgdef\multilingual\MultilingualBehavior;
public function behaviors()
{
return [
'ml' => [
'class' => MultilingualBehavior::className(),
'languages' => [
'vi-VN' => 'Russian',
'en-US' => 'English',
],
//'languageField' => 'language',
//'localizedPrefix' => '',
//'requireTranslations' => false',
//'dynamicLangClass' => true',
'langClassName' => PostLang::className(), // or namespace/for/a/class/PostLang
'defaultLanguage' => 'vi-VN',
'langForeignKey' => 'post_id',
'tableName' => "{{%postLang}}",
'attributes' => [
'title', 'content',
]
],
'verbs' => [
'class' => VerbFilter::className(),
'actions' => [
'delete' => ['post'],
],
],
];
}
and output orror
Call to undefined method backend\controllers\PostlangController::primaryKey()

Answer 1

don't add the behavior to the controller add it to your model
Attaching this behavior to the model (Post in the example).
https://github.com/OmgDef/yii2-multilingual-behavior