Call to a member function saveAs() on a non-object - yii2

Question

I am trying to upload image and database table.
on database table basic_info field name 'photo' that i want to store file name.
here is model
public function rules()
{
return [
[['photo'], 'string', 'max' => 255],
[['image'], 'safe'],
[['image'], 'file', 'extensions'=>'jpg, gif, png'],
];
}
here is controller
public function actionCreate()
{
$model = new BasicInfo();
if ($model->load(Yii::$app->request->post()))
{
$model->image = UploadedFile::getInstance($model, 'image');
$filename = pathinfo($model->image , PATHINFO_FILENAME);
$ext = pathinfo($model->image , PATHINFO_EXTENSION);
$newFname = $filename.'.'.$ext;
$path=Yii::getAlias('#membersImgPath');
if(!empty($newFname)){
$model->image->saveAs($path.$newFname);
$model->image = $newFname;
if($model->save()){
return $this->redirect(['view', 'id' => $model->id]);
}
}
}
return $this->render('create', [
'model' => $model,
]);
}
here is view
echo FileInput::widget([
'name' => 'photo',
'options' => ['accept' => 'image/*'],
]);

Answer 1

from your comment here,
$form = ActiveForm::begin(['type'=>ActiveForm::TYPE_VERTICAL],['opti‌​ons'=>['enctype'=>'m‌​ultipart/form-data']‌​]);
ActiveForm::begin does not have a second parameter. you need to use a single options array.
$form = ActiveForm::begin([
'type' => ActiveForm::TYPE_VERTICAL,
'opti‌​ons' => [
'enctype' => 'm‌​ultipart/form-data'
]‌
​]);

Answer 2

First of all, you have to check if there's a file. To do it try:
if(UploadedFile::getInstance($model, 'image')) {
// here should go your code with $model->image
}
Youre using pathinfo to get filename and extension. Remember, that youre using powerfull framework, you just initialized class UploadedFile which can do everything for you:
if(UploadedFile::getInstance($model, 'image')) {
$model->image = UploadedFile::getInstance($model, 'image');
$newFname = $model->image->name; // UploadedFile have properties like `name`, `tempName`, even `size`!
}
After doing this small fixes to your code (you should always check if something is set) - we can go to main problem.
Your input field name is photo, but youre trying to get image with name image.
Change this:
UploadedFile::getInstance($model, 'image');
To this:
UploadedFile::getInstance($model, 'photo'); // remeber to change it in `if` statement aswell!!
Theres also posibility that youre trying to upload file bigger than your post_max_size and upload_max_filesize allows. Change this properties in your php.ini, restart server and try again. If still something is not right, try to debug this thing, for start by doing var_dump($_FILES);die; in your controller.