cakephp event listener not found - cakephp

Question

I'm using Cakephp 3.2 and proffer plugin to upload images.
By default the path of the image is as follows
/media/files/<tablename>/<primary_key>/<filename>
Each time a new row is inserted into same table a new folder is created by its primary key.
I want to upload all images of a table to the same directory. means path like
/media/files/<tablename>/<filename>
I'm using event listener as per given in proffer documentation.
This is my SellersTable.php
<?php
namespace App\Model\Table;
use Cake\ORM\Query;
use Cake\ORM\RulesChecker;
use Cake\ORM\Table;
use Cake\Validation\Validator;
use Cake\Event\Event;
class SellersTable extends Table
{
/**
* Initialize method
*
* #param array $config The configuration for the Table.
* #return void
*/
public function initialize(array $config)
{
parent::initialize($config);
$listener = new App\Event\UploadFileNameListener(); // line 23
$this->eventManager()->on($listener);
$this->table('sellers');
$this->displayField('id');
$this->primaryKey('id');
$this->addBehavior('Timestamp');
$this->addBehavior('Proffer.Proffer', [
'profile_picture' => [
'root' => Configure::read('ArgoSystems.media.upload') . DS . 'files',
'dir' => 'dir'
]
]);
}
/**
* Default validation rules.
*
* #param \Cake\Validation\Validator $validator Validator instance.
* #return \Cake\Validation\Validator
*/
public function validationDefault(Validator $validator)
{
$validator
->integer('id')
->allowEmpty('id', 'create');
$validator
->requirePresence('first_name', 'create')
->notEmpty('first_name');
$validator
->requirePresence('last_name', 'create')
->notEmpty('last_name');
$validator
->email('email')
->requirePresence('email', 'create')
->notEmpty('email')
->add('email', 'unique', ['rule' => 'validateUnique', 'provider' => 'table']);
$validator->provider('proffer', 'Proffer\Model\Validation\ProfferRules');
$validator
->add('profile_picture', 'proffer', [
'rule' => ['dimensions', [
'min' => ['w' => 100, 'h' => 500],
'max' => ['w' => 100, 'h' => 500],
]],
'message' => 'Image must be of 100 x 500 resolution',
'provider' => 'proffer'
])
->requirePresence('profile_picture', 'create')
->allowEmpty('profile_picture','update');
$validator
->requirePresence('password', 'create')
->notEmpty('password');
return $validator;
}
public function buildRules(RulesChecker $rules)
{
$rules->add($rules->isUnique(['email']));
return $rules;
}
}
and created UploadFileNameListener.php in src/Event/
<?php
namespace App\Event;
use Cake\Event\Event;
use Cake\Event\EventListenerInterface;
use Cake\Utility\Inflector;
use Proffer\Lib\ProfferPath;
class UploadFileNameListener implements EventListenerInterface
{
public function implementedEvents()
{
return [
'Proffer.afterPath' => 'change',
];
}
/**
* Rename a file and change it's upload folder before it's processed
*
* #param Event $event The event class with a subject of the entity
* #param ProfferPath $path
* #return ProfferPath $path
*/
public function change(Event $event, ProfferPath $path)
{
// Detect and select the right file extension
switch ($event->subject()->get('image')['type']) {
default:
case "image/jpeg":
$ext = '.jpg';
break;
case "image/png":
$ext = '.png';
break;
case "image/gif":
$ext = '.gif';
break;
}
// Create a new filename using the id and the name of the entity
$newFilename = $event->subject()->get('id') . '_' . Inflector::slug($event->subject()->get('name')) . $ext;
// set seed
$path->setSeed('profile_picture');
// Change the filename in both the path to be saved, and in the entity data for saving to the db
$path->setFilename($newFilename);
$event->subject('image')['name'] = $newFilename;
// Must return the modified path instance, so that things are saved in the right place
return $path;
}
}
But this is giving Fatal error as
Error: Uncaught Error: Class 'App\Model\Table\App\Event\UploadFileNameListener' not found in
/var/www/html/projects/admin/src/Model/Table/SellersTable.php:23

Answer 1

From the error message, it's clear that it's trying to load the class with a namespace relative to the namespace of your current class. Try
$listener = new \App\Event\UploadFileNameListener();