我正在关注 CakePHP 3.7 的文档，以便在选择输入控件中显示虚拟字段。
DeliveryNotesTable.php
public function initialize(array $config)
{
parent::initialize($config);
$this->setTable('delivery_notes');
$this->setDisplayField('reference');
$this->setPrimaryKey('id');
$this->belongsTo('Customers', [
'foreignKey' => 'customer_id'
]);
$this->belongsTo('ShipmentReasons', [
'foreignKey' => 'shipment_reason_id'
]);
$this->belongsTo('ShipmentMethods', [
'foreignKey' => 'shipment_method_id'
]);
$this->hasMany('ItemsDeliveryNotes', [
'foreignKey' => 'delivery_note_id'
]);
$this->hasMany('ItemOrders', [
'foreignKey' => 'delivery_note_id'
]);
}
protected function _getReference()
{
return $this->deliveryNoteNumber . ' ' . $this->deliveryNoteDate;
}
我在 DeliveryNote.php 中公开虚拟字段：
class DeliveryNote extends Entity
{
protected $_accessible = [
'customer_id' => true,
'shipment_reason_id' => true,
'deliveryNoteNumber' => true,
'deliveryNoteDate' => true,
'shipment_method_id' => true,
'number_of_packages' => true,
'weight' => true,
'customer' => true,
'shipment_reason' => true,
'shipment_method' => true,
'items_delivery_notes' => true
];
protected $_virtual = [
'reference'
];
}
在我的控制器中，我加载相关数据：
public function add($id)
{
$itemOrder = $this->ItemOrders->newEntity();
$itemOrder['order_id'] = $id;
if ($this->request->is('post')) {
$itemOrder = $this->ItemOrders->patchEntity($itemOrder, $this->request->getData());
if ($this->ItemOrders->save($itemOrder)) {
$this->Flash->success(__('The {0} has been saved.', 'Item Order'));
return $this->redirect(['controller' => 'orders', 'action' => 'index']);
}
最后，在模板中我创建了选择控件：
<?= $this->Form->control('delivery_note_id', ['options' => $deliveryNotes, 'empty' => true]); ?>
但它是空的，没有显示任何项目。相反，如果我设置：
$this->setDisplayField('id');
或任何其他字段，选择控件已正确填充。我想念这个虚拟领域的创建过程吗？