Q:

find(list) returns several blank options, find(all) returns correct data but formatted with {

AvadiariesTable.php
$this->belongsTo('AlumnesGrups', [
        'foreignKey' => 'alumnes_grup_id',
        'joinType' => 'INNER'

AlumnesGrupsTable.php
$this->belongsTo('Alumnes', [
        'foreignKey' => 'alumne_id',
        'joinType' => 'INNER'
    ]);
    $this->belongsTo('Grups', [
        'foreignKey' => 'grup_id',
        'joinType' => 'INNER'
    ]);

Why is this in AvadiariesController.php:
 public function add()
    {
    $avadiary = $this->Avadiaries->newEntity();
        if ($this->request->is('post')) {
            $avadiary = $this->Avadiaries->patchEntity($avadiary, $this->request->data);
            $avadiary->user_id = $this->Auth->user('id');
            if ($this->Avadiaries->save($avadiary)) {
                $this->Flash->success(__('The avadiary has been saved.'));

                return $this->redirect(['action' => 'index']);
            } else {
                $this->Flash->error(__('The avadiary could not be saved. Please, try again.'));
            }
        }
    $alumnesGrups = $this->Avadiaries->AlumnesGrups->find('all', [
    'fields' => ['Alumnes.name'], 
    'contain' =>['Alumnes', 'Grups'], 
    'conditions' => ['Grups.id =' => 1], 
    'order' => ['Alumnes.name' => 'ASC']
    ]);
$this->set(compact('avadiary', 'alumnesGrups'));
        $this->set('_serialize', ['avadiary']);
    }

returning correct data but formatted like this:
{"Alumnes":{"name":"Angela Smith"}}? 
How can I just get Angela Smith? If I change find(all) to find(list), the selectbox is populated with several blank options.
Thank you!

A:

Use find('list') and use valueField for the field you want to show and keyField for its value:
$alumnesGrups = $this->Avadiaries->AlumnesGrups->find('list', [
    'keyField' => 'alumne.name', 
    'valueField' => 'alumne.name'])
->contain(['Alumnes', 'Grups']) 
->where(['Grups.id =' => 1]) 
->order(['Alumnes.name' => 'ASC']); 

Check:
http://book.cakephp.org/3.0/en/orm/retrieving-data-and-resultsets.html#finding-key-value-pairs

