My update function doesn't set values to null after saving - php

Question

I received help to solve how to delete files uploaded by using the Cakephp Upload package. However, there seems to be a problem with how I update the values of the photo and dir fields. By using unlink I was able to delete the files perfectly, but there seems to be a problem when I try to set the values to null. I made a function to test it out:
public function deletePhoto2($id)
{
// $this->request->allowMethod(['post']);
if ($this->request->is(['patch', 'post', 'put'])) {
$brigada = $this->Brigadas
->findById($id)
->firstOrFail();
$brigada->dir = null;
$brigada->photo = null;
if ($this->Brigadas->save($brigada)) {
$this->Flash->success(__('Your team data has been saved.'));
return $this->redirect(['action' => 'edit', $brigada->id]);
}
$this->set('brigada', $brigada);
}
}
Before saving I find that the value of $brigada->photo and $brigada->dir are null, but values don't save. I have several possibilities that want to explore but my knowledge of PHP is a hindrance:
I may be doing updates wrong. Link
I may need to use the deleteCallback which is documented here, but I don't know how to do it. I figured that it would be with $this->Brigadas->deleteCallback() or something similar, but I'd like to understand an example first, which is why I'm asking. I found no use of these callbacks in any example on the web, and the documentation on events is still a bit esoteric for me.
Here is how BrigadasTable.php is setup to upload files:
// http://josediazgonzalez.com/2015/12/05/uploading-files-and-images/
$this->addBehavior('Josegonzalez/Upload.Upload', [
'photo' => [
'fields' => [
'dir' => 'dir',
'size' => 'photo_size', // defaults to `size`
'type' => 'photo_type', // defaults to `type`
],
'nameCallback' => function ($table, $entity, $data, $field, $settings) {
if ($entity->gvCode){
$array = explode(".", $data['name']);
return strtolower($entity->gvCode) . '_' . date("Ymd-hisa") . '.jpg';
} else{
$array = explode(".", $data['name']);
$newArray = array_pop($array);
return strtolower(join('_', $array)) . '_' . date("Ymd-hisa") . '.jpg';
}
},
'transformer' => function ($table, $entity, $data, $field, $settings) {
$extension = pathinfo($data['name'], PATHINFO_EXTENSION);
// Store the thumbnail in a temporary file
$tmp = tempnam(sys_get_temp_dir(), 'upload') . '.' . $extension;
// Use the Imagine library to DO THE THING
$size = new \Imagine\Image\Box(640, 640);
$mode = \Imagine\Image\ImageInterface::THUMBNAIL_INSET;
$imagine = new \Imagine\Gd\Imagine();
// Save that modified file to our temp file
$imagine->open($data['tmp_name'])
->thumbnail($size, $mode)
->save($tmp);
$filenameTmp = explode('.', $data['name']);
array_pop($filenameTmp);
$filenameTmp = join('_', $filenameTmp) . '.jpg';
// return debug($filenameTmp);
// Now return the original *and* the thumbnail
return [
$data['tmp_name'] => $filenameTmp,
$tmp => 'thumbnail-' . $filenameTmp,
];
},
'deleteCallback' => function ($path, $entity, $field, $settings) {
// When deleting the entity, both the original and the thumbnail will be removed
// when keepFilesOnDelete is set to false
$entity->{$field} = null;
return [
$path . $entity->{$field},
$path . 'thumbnail-' . $entity->{$field}
];
},
'keepFilesOnDelete' => false
]
]);
Thank you!

Answer 1

You can run an update query straight, instead of fetching the record, setting values and saving it.
$query = $this->Brigadas->query();
$query->update()
->set([
'dir' => null,
'photo' => null,
])
->where(<condition>)
->execute();
Incase any of your columns are json,
$query = $this->Brigadas->query();
$query->update()
->set([
'dir = null',
'photo' => null,
])
->where(<condition>)
->execute();