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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\View\Form;
use Cake\Http\ServerRequest;
use Cake\Utility\Hash;
/**
* Provides a context provider for Cake\Form\Form instances.
*
* This context provider simply fulfils the interface requirements
* that FormHelper has and allows access to the request data.
*/
class FormContext implements ContextInterface
{
/**
* The request object.
*
* @var \Cake\Http\ServerRequest
*/
protected $_request;
/**
* The form object.
*
* @var \Cake\Form\Form
*/
protected $_form;
/**
* Constructor.
*
* @param \Cake\Http\ServerRequest $request The request object.
* @param array $context Context info.
*/
public function __construct(ServerRequest $request, array $context)
{
$this->_request = $request;
$context += [
'entity' => null,
];
$this->_form = $context['entity'];
}
/**
* {@inheritDoc}
*/
public function primaryKey()
{
return [];
}
/**
* {@inheritDoc}
*/
public function isPrimaryKey($field)
{
return false;
}
/**
* {@inheritDoc}
*/
public function isCreate()
{
return true;
}
/**
* {@inheritDoc}
*/
public function val($field, $options = [])
{
$options += [
'default' => null,
'schemaDefault' => true
];
$val = $this->_request->getData($field);
if ($val !== null) {
return $val;
}
if ($options['default'] !== null || !$options['schemaDefault']) {
return $options['default'];
}
return $this->_schemaDefault($field);
}
/**
* Get default value from form schema for given field.
*
* @param string $field Field name.
* @return mixed
*/
protected function _schemaDefault($field)
{
$field = $this->_form->schema()->field($field);
if ($field) {
return $field['default'];
}
return null;
}
/**
* {@inheritDoc}
*/
public function isRequired($field)
{
$validator = $this->_form->getValidator();
if (!$validator->hasField($field)) {
return false;
}
if ($this->type($field) !== 'boolean') {
return $validator->isEmptyAllowed($field, $this->isCreate()) === false;
}
return false;
}
/**
* {@inheritDoc}
*/
public function fieldNames()
{
return $this->_form->schema()->fields();
}
/**
* {@inheritDoc}
*/
public function type($field)
{
return $this->_form->schema()->fieldType($field);
}
/**
* {@inheritDoc}
*/
public function attributes($field)
{
$column = (array)$this->_form->schema()->field($field);
$whiteList = ['length' => null, 'precision' => null];
return array_intersect_key($column, $whiteList);
}
/**
* {@inheritDoc}
*/
public function hasError($field)
{
$errors = $this->error($field);
return count($errors) > 0;
}
/**
* {@inheritDoc}
*/
public function error($field)
{
return array_values((array)Hash::get($this->_form->errors(), $field, []));
}
}