how to update a record with file uploaded already? - file-upload

Question

I want to UPDATE record without losing the File that i have uploaded. Below is my create action.
public function actionCreate()
{
$model = new Page;
if (isset($_POST['Page']))
{
$model->attributes = $_POST['Page'];
$model->filename = CUploadedFile::getInstance($model, 'filename');
if ($model->save())
{
if ($model->filename !== null)
{
$dest = Yii::getPathOfAlias('application.uploads');
$model->filename->saveAs($dest . '/' . $model->filename->name);
$model->save();
}
$this->redirect(array('view', 'id' => $model->id));
}
}
$this->render('create', array(
'model' => $model,
));
}

Answer 1

In yii, update method is designed to update the values that you are posting from your form. It will not update all Model properties.
For suppose, your Page model has 4 model properties, assume all are mandatory.
title
description
keywords
image
Since you don't want to update image field, you can make it non mandatory field by setting scenario for image field in your Page model rules.
class Page extends CActiveRecord
{
/*
Coding
*/
public function rules()
{
return array(
array('title, description,keywords', 'required'),
array('image', 'file', 'types'=>'jpg, png'),
array('image', 'required', 'on' => 'insert'),
// => You need image field to be entered on Create, not on Update
.................
}
}
So, Show file input in your form on Create, Hide on Update action so that image field won't submit.
//Your page form
<?php if($model->isNewRecord):?>
echo $form->labelEx($model, 'image');
echo $form->fileField($model, 'image');
echo $form->error($model, 'image');
<?php endif;?>
Since your are using Yii-2 you can use skippOnEmpty validator for the same.