cakephp canot save form control field in database - cakephp

Question

i am trying to make an simple cakephp aplication!
I have a form that creates a new article.. my problem is that i have an input field for the artice slug but when i cakephp submits te form the slug field in database remains empty..
here is the add method from my articleController
public function add(){
$article = $this->Articles->newEntity(); //gffdgfd
if ($this->request->is('post')){
$this->Articles->patchEntity($article, $this->request->data());
if($this->Articles->save($article)){
$this->Flash->success(__('Your Article has been saved!'));
return $this->redirect(['action' => 'index']);
}
$this->Flash->error(__('Cannot save article! Please try again!!'));
}
$this->set('article', $article);
}
and my add.ctp
<h1>Add Article</h1>
<?php
echo $this->Form->create($article);
echo $this->Form->control('user_id', ['type' => 'hidden', 'value'=> 1 ]);
echo $this->Form->control('published', ['type' => 'hidden', 'value'=> 1 ]);
echo $this->Form->control('title');
echo $this->Form->control('slug');
echo $this->Form->control('body', ['rows' => 5 ]);
echo $this->Form->button(__('Save Article'), ['class' => 'button', 'style' => 'margin-right:10px; margin-left:10px']);
echo $this->Html->link('Back', ['action' => 'index'], ['class' => 'button']);
echo $this->Form->end();
?>

Answer 1

If slug field is present in your request data, then you should check if this field is accessible for assignment in your entity. Look at file src/Model/Entity/Article.php, on top of class body you will have an array named $_accessible - check if your slug field is present, and if not, set it to true:
protected $_accessible = [
/* other fields */
'slug' => true
];
Please check more about assignment of properties in docs: CakePHP 3 Entities - Mass Assignment