Yii has Many 用法
Model Catalog :
//加入以下關聯函式
public function getSubclass()
{
return $this->hasMany(Subclass::className(), ['CatalogId' => 'Id']);
//關聯的子table //子table對應欄位 //母table對應欄位
}
Use:
$user = Catalog::findone($id);
$subclass = $user->getSubclass()->all(); //得到子項資料
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