Yii2 How do I customize error messages in model validation?

namespace backend\modules\article\models;use yii\db\ActiveRecord;class Category extends ActiveRecord{        public static function tableName()    {        return 'category';    }        public function rules()    {        return [            [['categoryName','categoryDir'],'required','message'=>'不能为空']        ];    }}

The above-defined error message, the output is "cannot be empty", can not be based on CategoryName, Categorydir different display different information, want to let CategoryName output "CategoryName cannot be empty", let Categorydir output "Categorydir cannot be empty", do not know if there is no relevant variable can do?

Reply content:

namespace backend\modules\article\models;use yii\db\ActiveRecord;class Category extends ActiveRecord{        public static function tableName()    {        return 'category';    }        public function rules()    {        return [            [['categoryName','categoryDir'],'required','message'=>'不能为空']        ];    }}

The above-defined error message, the output is "cannot be empty", can not be based on CategoryName, Categorydir different display different information, want to let CategoryName output "CategoryName cannot be empty", let Categorydir output "Categorydir cannot be empty", do not know if there is no relevant variable can do?

I think what you need is this:

[['username', 'password'], 'required', 'message' => '{attribute}不能为空！'],

 public function rules()    {        return [            ['categoryName','required','message'=>'categoryName不能为空'],            ['categoryDir','required','message'=>'categoryDir不能为空']        ];    }

Is that OK?

