Call to a member function saveAs() on a non-object[Yii 2] - php

Question

I am new to yii and php.
I want to upload a file and save its path to database but while doing so I got an error.
My controller class is:
public function actionCreate()
{
$model = new Quiz();
if ($model->load(Yii::$app->request->post()) && $model->save()) {
$fileName = $model->name;
$model->file =UploadedFile::getInstance($model,'file');
$model->file->saveAs('uploadQuiz/'.$fileName.'.'.$model->file->extension );
$model->filePath = 'uploadQuiz/'.$fileName.'.'.$model->file->extension ;
$model->save();
return $this->redirect(['view', 'id' => $model->idQuiz]);
} else {
return $this->render('create', [
'model' => $model,
]);
}
}
My database column name where I save my file path is "filePath".
My view file is:
<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
/* #var $this yii\web\View */
/* #var $model app\models\Quiz */
/* #var $form yii\widgets\ActiveForm */
?>
<div class="quiz-form">
<?php $form = ActiveForm::begin(['option' => ['enctype' => 'multipart/form-data']]); ?>
<?= $form->field($model, 'Course_idCourse')->textInput(['maxlength' => 100]) ?>
<?= $form->field($model, 'name')->textInput(['maxlength' => 100]) ?>
<?= $form->field($model, 'description')->textInput(['maxlength' => 255]) ?>
<?= $form->field($model, 'duration')->textInput(['maxlength' => 100]) ?>
<?= $form->field($model, 'time')->textInput() ?>
<?= $form->field($model, 'file')->fileInput(); ?>
<?= $form->field($model, 'totalMarks')->textInput(['maxlength' => 100]) ?>
<div class="form-group">
<?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>
<?php ActiveForm::end(); ?>
</div>
My rules and attributes are:
public function rules()
{
return [
[['Course_idCourse', 'duration', 'time'], 'required'],
[['Course_idCourse', 'duration', 'totalMarks'], 'integer'],
[['time'], 'safe'],
[['file'],'file'],
[['name', 'filePath'], 'string', 'max' => 200],
[['description'], 'string', 'max' => 255]
];
}
/**
* #inheritdoc
*/
public function attributeLabels()
{
return [
'idQuiz' => 'Id Quiz',
'Course_idCourse' => 'Course Id Course',
'name' => 'Name',
'description' => 'Description',
'duration' => 'Duration',
'time' => 'Time',
'file' => 'Quiz ',
'totalMarks' => 'Total Marks',
];
}
Now I already refer this site for the same question but I find it for update not for create . kINDLY HELP ME.
When I run try to create I got an error
Call to a member function saveAs() on a non-object
I don't figure where am I going wrong.

Answer 1

No file is being uploaded. The option parameter in the ActiveForm initialization should be options
<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>