Implementation of Has One and has many

[Mandzuk]

Hello. I have a problem with implementation hasOne and hasMany. My class:
`namespace common\models;

use backend\components\TreeTrait;
use omgdef\multilingual\MultilingualBehavior;
use Yii;

/**

• This is the model class for table "news_categories".

• @Property integer $id

• @Property integer $site_id

• @Property integer $parent_id

• @Property string $url

• @Property string $img

• @Property integer $active

• @Property Sites $site

• @Property NewsCategoriesLang[] $newsCategoriesLangs
  /
  class NewsCategories extends \yii\db\ActiveRecord
  {
  use TreeTrait;
  /*

  • @inheritdoc
    */
    public static function tableName()
    {
    return 'news_categories';
    }

  /**

  • @inheritdoc
    */
    public function rules()
    {
    return [
    [['site_id', 'parent_id', 'active', 'noindex'], 'integer'],
    [['descr'], 'string'],
    [['url', 'img', 'title', 'descr', 'seo_t', 'seo_k'], 'string', 'max' => 255],
    [['seo_d'], 'string', 'max' => 1500],
    [['site_id'], 'exist', 'skipOnError' => true, 'targetClass' => Sites::className(), 'targetAttribute' => ['site_id' => 'id']],
    ];
    }

  public function behaviors()
  {
  return [
  'ml' => [
  'class' => MultilingualBehavior::className(),
  'languages' => [
  'ru-RU' => 'Russian',
  'en-US' => 'English',
  ],
  //'languageField' => 'language',
  //'localizedPrefix' => '',
  //'requireTranslations' => false',
  //'dynamicLangClass' => true',
  'langClassName' => NewsCategoriesLang::className(), // or namespace/for/a/class/PostLang
  'defaultLanguage' => 'ru',
  'langForeignKey' => 'news_categories_id',
  'tableName' => "{{%news_categoriesLang}}",
  'attributes' => [
  'title', 'descr', 'seo_t', 'seo_d', 'seo_k', 'noindex',
  ]
  ],
  ];
  }

  public static function find()
  {
  return new MultilingualQuery(get_called_class());
  }

  /**

  • @inheritdoc
    */
    public function attributeLabels()
    {
    return [
    'id' => 'ID',
    'site_id' => 'Site ID',
    'parent_id' => 'Parent ID',
    'url' => 'Url',
    'img' => 'Img',
    'active' => 'Active',
    ];
    }

  /**

  • @return \yii\db\ActiveQuery
    */
    public function getSite()
    {
    return $this->hasOne(Sites::className(), ['id' => 'site_id']);
    }

  public function getChilds()
  {
  return $this->hasMany(NewsCategories::className(), ['parent_id' => 'id']);
  }

  public function getParent()
  {
  return $this->hasOne(NewsCategories::className(), ['id' => 'parent_id']);
  }

  /**

  • @return \yii\db\ActiveQuery
    */
    // public function getNewsCategoriesLangs()
    // {
    // return $this->hasMany(NewsCategoriesLang::className(), ['news_categories_id' => 'id']);
    // }
    }`

and when I call
$test = NewsCategories::find()->where(['id' => $id])->one(); print_r($test->parent->id); exit();
http://joxi.ru/82QM8wju1WzDj2

[OmgDef]

Hi! It's not related to this behavior. Make sure that parent of the model really exists in your DB.

[Mandzuk]

Sorry, I founded an error