将Entity对象作为参数传递给CakePHP 3.x中的控制器函数

Question

I have a project of CakePHP 3.1 and I'm looking for a way to pass as parameter an Entity object and an array to a controller using the FormHelper postLink.

What I have already tried:

echo $this->Form->postLink(
                __('Unlink'),
                ['action' => 'unlink', $entity, $array],
                ['confirm' => __('Are you sure to unlink {0}?', $array['name'])]);  

My controller:

public function unlink($entity,$array)
{
    $theTable = TableRegistry::get('tableName');
    $theTable->Model->unlink($entity, $array);
    return $this->redirect($this->referer());
}

This is displaying a pretty known error:

rawurlencode() expects parameter 1 to be string

But I haven't find any post that fits my needs, I guess it is because I need to pass an object instead of basic types.

Any help or better alternative is appreciated.

Answer 1

Try to pass only the entity id as parameter (not the entity) and do the job inside unlink action:

echo $this->Form->postLink(
            __('Unlink'),
            ['action' => 'unlink', $entity->id, $array],
            ['confirm' => __('Are you sure to unlink {0}?', $array['name'])]);

and inside unlink:

public function unlink($id = null ,$array = [])
{
    if (is_null($id)) {
        // an error flash message can be set here
        return $this->redirect($this->referer());
    }       
    $theTable = TableRegistry::get('tableName');
    $theEntity = $theTable->get($id);
    $theTable->unlink($theEntity, $array);
    return $this->redirect($this->referer());       
}