Indirect modification of overloaded property WatimageComponent::$file has no effect - image

Question

I am trying to create several thumbs of different sizes using a foreach loop on a resize method.
$sizes = array(
'thumb' => Configure::read('Shop.image_thumb_dimensions'),
'medium' => Configure::read('Shop.image_medium_dimensions'),
'large' => Configure::read('Shop.image_large_dimensions')
);
foreach($sizes as $folder => $size) {
$destFolder = WWW_ROOT. $this->upload_dir . DS . $folder;
if (!file_exists($destFolder)) {
#mkdir($destFolder);
}
$dimensionsArray = explode(',', $size);
$newWidth = $dimensionsArray[0];
$newHeight = $dimensionsArray[1];
$destFile = $destFolder . DS . $fileName;
$resize = $this->__resize($filePath, $destFile, $newWidth, $newHeight);
}
and then the resize function which uses some methods from a component goes like this:
private function __resize($src, $destFile, $newWidth, $newHeight) {
$this->Watimage->setImage($src);
$this->Watimage->resize(array('type' => 'resizecrop', 'size' => array($newWidth, $newHeight)));
if ( !$this->Watimage->generate($destFile) ) {
// handle errors...
return $this->Watimage->errors;
}
else {
return true;
}
}
So this works great for the first image size (the thumb) but thereafter I get the error:
b>Notice</b> (8)</a>: Indirect modification of overloaded property WatimageComponent::$file has no effect [<b>APP/Plugin/Gallery/Controller/Component/WatimageComponent.php</b>, line <b>114</b>
I don't understand what I am doing wrong?? Have spent hours trying to figure this out.
Any illumination on the matter will be greatly appreciated.
This is the method from the component class:
public function setImage($file) {
// Remove possible errors...
$this->errors = array();
try
{
if ( is_array($file) && isset($file['file']) )
{
if ( isset($file['quality']) )
$this->setQuality($file['quality']);
$file = $file['file'];
}
elseif ( empty($file) || (is_array($file) && !isset($file['file'])) )
{
throw new Exception('Empty file');
}
if ( file_exists($file) )
$this->file['image'] = $file;
else
throw new Exception('File "' . $file . '" does not exist');
// Obtain extension
$this->extension['image'] = $this->getFileExtension($this->file['image']);
// Obtain file sizes
$this->getSizes();
// Create image boundary
$this->image = $this->createImage($this->file['image']);
$this->handleTransparentImage();
}
catch ( Exception $e )
{
$this->error($e);
return false;
}
return true;
}

Answer 1

There you go, the initial problem is most probably the unsetting of the WaitmageComponent::$file property
unset($this->file);
https://github.com/elboletaire/Watimage/blob/b72e7ac17ad30bfc47ae4d0f31c4ad6795c8f8d2/watimage.php#L706
After doing so, the magic property accessor Component::__get() will kick in when trying to access the now unexistent WaitmageComponent::$file property, and consequently this results in the warning you are receiving.
Instead of unsetting the variable, it should be reinitialized:
$this->file = array();
And of course it should also be initialized properly:
private $file = array();

Answer 2

You should initialize the property on your class, i think what is going on is you are trying to do something like:
$this->file = $var;
But you need to tell your class what is the $file property is:
class WaitmageComponent extends Component {
public $file = array();
}