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

Yii 2.0 General Discussions
1

Hi all, i’m following this guide to try upload file funcition.

But when i press Submit, i have this error:




 PHP Fatal Error – yii\base\ErrorException

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

This is my controller




...


use app\models\admin\UploadForm;

use yii\web\UploadedFile;




        $upform = new UploadForm();

        if (Yii::$app->request->isPost) {

            $upform->file = UploadedFile::getInstance($upform, 'file');


            if ($upform->validate()) {                

                $upform->file->saveAs('uploads/' . $upform->file->baseName . '.' . $upform->file->extension);

            }

        }        

        

...

this is the view:




    use yii\helpers\Html;

    use yii\widgets\ActiveForm;


    

$form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>


<?= $form->field($upform, 'file')->fileInput() ?>


<button>Submit</button>


<?php ActiveForm::end(); ?>

and the simply model:




namespace app\models\admin;


use yii\base\Model;

use yii\web\UploadedFile;


/**

 * UploadForm is the model behind the upload form.

 */

class UploadForm extends Model

{

    /**

     * @var UploadedFile|Null file attribute

     */

    public $file;


    /**

     * @return array the validation rules.

     */

    public function rules()

    {

        return [

            [['file'], 'file'],

        ];

    }

}

I don’t know what i’m missing,

Thank’s for any help!

2

Have you tried debugging your code?

would mean that you aren’t getting the file correctly and that your issue is probably with:


$upform->file = UploadedFile::getInstance($upform, 'file');

I would suggest var dumping $upform->fil, see what you get and go from there

Cheers

Ash

3

thank’s Ash for your reply.

I found the problem:

The controller i’m using is my ProfileController and i render the Profile view (where i create upload form) passing these parameter:


        return $this->render("profile", [

            'profile' => $profile, // profile model

            'upform' => $upform, //form model

            'nav' => $nav, // navigation wizard step

        ]

        );

then, on my Profile View i have another render to sub-view:




    switch($nav) {

            case "1": $navpage = '_profile_general'; break;

            case "2": $navpage = '_profile_contact'; break;

            case "3": $navpage = '_profile_social'; break;

            default: $navpage = '_profile_general'; break;

        }

        echo $this->render($navpage,[

                                        'profile' => $profile,

                                        'upform' => $upform

                                    ]);

probably the command


$upform->file = UploadedFile::getInstance($upform, 'file');

return null and i’m watching is that $_FILES is empty :(

If I try to put the upload form in the main Profile View, all works fine, but if i put it in the sub_view, in the controller i have $_FILES empty.

I don’know why.