Getting unknown property error in Yii2 - yii2

Question

I know there are some answers related to this, but I couldn't find any useful ones.
I am getting this error: Getting unknown property: app\models\Employees::holidays and I've no idea what I'm doing wrong.
Could someone help me out to solve this?
This is my model code:
<?php
namespace app\models;
use Yii;
use yii\data\ActiveDataProvider;
use yii\db\ActiveRecord;
/**
* This is the model class for table "employee".
*
* #property integer $id
* #property string $name
* #property string $surname
* #property string $employment_date
*/
class Employee extends ActiveRecord
{
/** #const SCENARIO_CREATE scenario - create */
const SCENARIO_CREATE = 'create';
/** #const SCENARIO_EDIT scenario - edit */
const SCENARIO_EDIT = 'edit';
/** #const SCENARIO_SEARCH scenario - search */
const SCENARIO_SEARCH = 'search';
/** #const HOLIDAYS_PER_WORK_DAY Earned holidays per one working day. */
const HOLIDAYS_PER_WORK_DAY = 0.4;
/** #var integer $holidays calculated holidays field used in list. */
public $holidays;
/**
* #inheritdoc
*/
public static function tableName()
{
return 'employee';
}
/**
* #inheritdoc
*/
public function rules()
{
return [
// id
['id', 'required', 'except' => self::SCENARIO_SEARCH],
['id', 'integer'],
// name
['name', 'required'],
['name', 'string', 'max' => 255],
// surname
['surname', 'required'],
['surname', 'string', 'max' => 255],
// employment date
['employment_date', 'required'],
['employment_date', 'match',
'pattern' => '/^([1][9]|[2][0])[0-9]{2}[-](0[1-9]|1[0-2])[-](0[1-9]|[1-2][0-9]|3[0-1])$/',
'message' => Yii::t('app',
'Neteisingas datos formatas (Formatas: YYYY-MM-DD)'),
],
['employment_date', 'date',
'format' => 'php:Y-m-d',
'max' => time(),
'tooBig' => Yii::t('app', 'Blogai įvesta data. Vėliausia galima data: ' . date('Y-m-d'))
],
];
}
/**
* #inheritdoc
*/
public function attributeLabels()
{
return [
'id' => Yii::t('app', 'ID'),
'name' => Yii::t('app', 'Darbuotojo vardas'),
'surname' => Yii::t('app', 'Darbuotojo pavardė'),
'employment_date' => Yii::t('app', 'Įdarbinimo data'),
];
}
/**
* #inheritdoc
*/
public function scenarios()
{
return [
self::SCENARIO_CREATE => [
'name',
'surname',
'employment_date',
],
self::SCENARIO_EDIT => [
'id',
'name',
'surname',
'employment_date',
],
self::SCENARIO_SEARCH => [
'id',
'name',
'surname',
'employment_date',
'holidays',
],
];
}
/**
* Creates data provider instance with search query applied
*
* #param array $params
*
* #return ActiveDataProvider
*/
public function search($params)
{
$holidays = 'floor(datediff(curdate(), employment_date) * ' .
Employee::HOLIDAYS_PER_WORK_DAY . ')';
$query = Employees::find()->select([
$this->tableName() . '.id',
$this->tableName() . '.name',
$this->tableName() . '.surname',
$this->tableName() . '.employment_date',
$holidays . ' as holidays',
]);
// add conditions that should always apply here
$dataProvider = new ActiveDataProvider([
'query' => $query,
'sort' => [
'defaultOrder' => ['name' => SORT_ASC],
],
]);
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to return any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
// grid filtering conditions
$query->andFilterWhere([
'id' => $this->id,
'employment_date' => $this->employment_date,
]);
$query->andFilterWhere(['like', 'name', $this->name])
->andFilterWhere(['like', 'surname', $this->surname]);
return $dataProvider;
}
}
My index.php file:
<?php
use app\models\EmployeeSearch;
use yii\data\ActiveDataProvider;
use yii\grid\GridView;
use yii\helpers\Html;
use yii\web\View;
use yii\widgets\Pjax;
/* #var $this View */
/* #var $searchModel EmployeeSearch */
/* #var $dataProvider ActiveDataProvider */
$this->title = Yii::t('app', 'Employees');
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="employee-index">
<h1><?= Html::encode($this->title) ?></h1>
<?php // echo $this->render('_search', ['model' => $searchModel]); ?>
<p>
<?= Html::a(Yii::t('app', 'Create Employee'), ['create'], ['class' => 'btn btn-success']) ?>
</p>
<?php Pjax::begin(); ?>
<?= GridView::widget([
'dataProvider' => $dataProvider,
'filterModel' => $searchModel,
'columns' => [
['class' => 'yii\grid\SerialColumn'],
'id',
'name',
'surname',
'employment_date',
'holidays',
['class' => 'yii\grid\ActionColumn'],
],
]); ?>
<?php Pjax::end(); ?></div>
I know it's a quite long, but I don't know how much of the code I should include.
I think this line holidays in index php file is causing the error.

Answer 1

Add this on your rule .
['holidays', 'integer']
And use this $this->holidays during search.

Answer 2

There is something strange with your code:
My assumption is that you have 2 different models:
"Employee" and "Employees" in your app/models directory.
You are using "Employees" model in the search() of "Employee". For this to work you need to define:
public $holidays;
in your "Employees" model as your error suggests.
But my guess is that you wanted to use maybe "Employee" model for the search(). If this is the case, change the "Employees" to "Employee" in that function:
$query = Employee::find()...

Answer 3

you must comment all your index.php file and run your code. if you have not any error it means error is in index.php page.
then you must uncomment lines one by one and after each uncomment run your project.when you have error it means that line is one of your errors. then keep comment that line and uncomment other one by one and repeat that task to end of file.
in this way you can find your error.

Answer 4

Add the property for holidays in the model before class started:
#property string $holidays
Then it will work.