Yii uploading pictures - yii

Question

I'm a new to yii, so I was following this tutorial.
when I try to upload picture it reports empty field even if it is not.
my _form view:
<div class="form">
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'picture-form',
'enableAjaxValidation'=>false,
'htmlOptions' => array('enctype' => 'multipart/form-data'),
));
?>
...
<div class="row">
<?php echo $form->labelEx($model,'path_to'); ?>
<?php echo $form->fileField($model,'path_to'); ?>
<?php echo $form->error($model,'path_to'); ?>
</div>
...
<?php $this->endWidget(); ?>
</div><!-- form -->
and here is my action method:
public function actionCreate()
{
$model=new Picture;
if(isset($_POST['Picture']))
{
$model->attributes=$_POST['Picture'];
$model->picture=CUploadedFile::getInstance($model,'path_to');
if($model->save()){
$log->lwrite('in save'.$model->picture);
$model->picture->saveAs(Yii::app()->basePath.'/../images/'.$model->picture);
$this->redirect(array('view','id'=>$model->id));
$log->lclose();
}
}
$this->render('create',array('model'=>$model,));
}
when I print_r($_FILES) everything what should be there is there
when I print_r($_POST) the field 'path_to' is empty and the validator probably is picking that one.
I'm probably missing something here and I'm clueless.
update1:
I've noticed yii is using hidden field with the same name as file input, than attributes are read from $_POST, which is causing the engine reading empty hidden field.
I understand that the hidden field is there for update when user is not entering new picture.
Can anyone advice what is the best way of doing picture upload?
update2:
model code:
class Picture extends CActiveRecord
{
public $picture;
...
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('path_to, page_id', 'required'),
array('page_id', 'numerical', 'integerOnly'=>true),
array('alt_text', 'safe'),
// The following rule is used by search().
// Please remove those attributes that should not be searched.
array('id, alt_text, path_to, page_id', 'safe', 'on'=>'search'),
//array('path_to', 'file','types'=>'jpg, gif, png', 'allowEmpty'=>true, 'on'=>'update'),
//array('path_to', 'length', 'max'=>255, 'on'=>'insert,update'),
array('path_to', 'unsafe'),
);
}
...
Best!

Answer 1

I think because you've declared 'path_to' to be unsafe in your rules, the massive assignment line:
$model->attributes=$_POST['Picture'];
Will fail, which will then cause the rule validation to fail. Change your rules to allow for path_to to be safe, and you should be good to go . . .
It also appears you're requiring a page_id, which I'm not seeing in your form.

Answer 2

_form code for file upload field :
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'post-form',
'enableAjaxValidation'=>false,
'htmlOptions' => array('enctype' => 'multipart/form-data'),
)); ?>
<div class="row">
<?php echo $form->labelEx($model, 'image');?>
<?php echo $form->fileField($model, 'image'); ?>
<?php echo $form->error($model, 'image'); ?>
</div>
<?php $this->endWidget(); ?>
Controller Code:
public function actionCreate()
{
$model=new Post;
if(isset($_POST['Post']))
{
$model->attributes=$_POST['Post'];
$uploadedFile=CUploadedFile::getInstance($model,'image');
$fileName = $uploadedFile;
$model->image = $fileName;
if($model->save()){
$uploadedFile->saveAs('C:/Program Files/Apache Group/Apache2/htdocs'.Yii::app()->baseUrl.'/images/thumbnails/'.$fileName);
$this->redirect(array('view','id'=>$model->id));
}
}
$this->render('create',array(
'model'=>$model,
));
}
diplay view code :
<?php $this->widget('zii.widgets.grid.CGridView', array(
'dataProvider'=>$model->search(),
'ajaxUpdate' => false,
'columns'=>array(
array(
'name'=>'Thumbnail',
'value'=>array($model,'showThumbnail'), // function in model
'type'=>'html',
'htmlOptions'=>array('class'=>'thumbnail'),
),
)
));
?>
model code :
place this function in ur model :
public function showThumbnail($data){
$path = $data->image;
return CHtml::image(Yii::app()->baseUrl.'/images/thumbnails/'.$path); // same path as ur uploaded file path
}