/**
* Initializer function called by the constructor unless the constructor `'init'` flag is set
* to `false`.
*
* @see lithium\core\Object
* @throws ConfigException
*/
public function _init()
{
parent::_init();
if (!($model = $this->_model)) {
throw new ConfigException("`'model'` option needs to be defined.");
}
$behavior = $this;
$model::applyFilter('save', function ($self, $params, $chain) use($behavior) {
if ($behavior->invokeMethod('_beforeSave', [$params])) {
return $chain->next($self, $params, $chain);
}
});
$model::applyFilter('delete', function ($self, $params, $chain) use($behavior) {
if ($behavior->invokeMethod('_beforeDelete', [$params])) {
return $chain->next($self, $params, $chain);
}
});
}
/**
* @todo We may also need to filter `remove()`.
*/
protected function _init()
{
parent::_init();
if (PHP_SAPI === 'cli') {
return true;
}
if ($model = $this->_model) {
$behavior = $this;
$model::applyFilter('save', function ($self, $params, $chain) use($behavior) {
$options = ['placeholders' => []];
$configs = $behavior->_config;
$fields = $behavior::_formattedFields($configs['fields']);
$source = $destination = $configName = [];
$data = $behavior::_modified($params['data'], $fields);
$dataKeys = array_keys($data);
if (empty($dataKeys)) {
return $chain->next($self, $params, $chain);
}
$queried = $params['entity']->export()['data'];
if (0 === count(array_intersect_key($queried, $fields))) {
return $chain->next($self, $params, $chain);
}
$params['data'] = [];
$params['entity']->set($data);
$entity = $params['entity'];
$entityData['model'] = $entity->model();
$entityData['data'] = $entity->data();
if (!isset($configs['placeholders'])) {
$configs['placeholders'] = [];
}
$defaults = ['save' => null, 'remove' => null];
$skip = [];
$fieldCount = 0;
foreach ($fields as $field => $name) {
if (array_key_exists($field, $data)) {
$configName[$field] = $name;
$source[$field] = $_FILES[$field]['tmp_name'];
$settings = UploadableStorage::config($name);
$settings += $defaults;
$path = $settings['save'];
$newFile = $_FILES[$field]['name'];
if ($entity->exists()) {
if (!$entity->modified($field)) {
$skip[$field] = true;
} else {
// We delete the old file
$oldFile = $entity->export()['data'][$field];
$removeOptions['placeholders'] = UploadableStorage::placeholders($oldFile, $configs['placeholders'] + ['field' => $field], $entityData);
$removePath = UploadableStorage::interpolate($settings['remove'], $removeOptions);
UploadableStorage::remove($removePath, $removeOptions + ['name' => $name]);
if (null === $data[$field]) {
$skip[$field] = true;
continue;
}
$options['placeholders'] = UploadableStorage::placeholders($newFile, $configs['placeholders'] + ['field' => $field], $entityData);
$destination[$field] = UploadableStorage::interpolate($path, $options);
/**
* The field has been modified to now contain 'null' so we
* remove the field from the config so that, later on, we don't
* try to upload a non-existent file later.
*/
if (null === $entity->{$field}) {
$params['entity']->{$field} = null;
unset($configs['fields'][$field]);
} else {
/**
* the field has been modified but it contains a value
* so we must upload the new one.
*/
$fieldValue = static::fieldValue($path, $options['placeholders']);
$params['entity']->{$field} = $fieldValue;
}
}
} else {
$options['placeholders'] = UploadableStorage::placeholders($newFile, $configs['placeholders'] + ['field' => $field], $entityData);
$fieldValue = static::fieldValue($path, $options['placeholders']);
$destination[$field] = UploadableStorage::interpolate($path, $options);
$params['entity']->{$field} = $fieldValue;
}
} else {
$fieldCount++;
}
}
if (!$params['entity']->validates()) {
return false;
}
$saved = $chain->next($self, $params, $chain);
if ($fieldCount == count($fields)) {
return $saved;
}
$options['placeholders'] += $params['entity']->data();
$uploaded = [];
foreach ($fields as $field => $name) {
if (!isset($skip[$field]) || $skip[$field] !== true) {
$options['name'] = $configName[$field];
$uploaded[] = UploadableStorage::save($source[$field], $destination[$field], $options);
}
}
return $saved && !in_array(false, $uploaded, true);
});
$model::applyFilter('find', function ($self, $params, $chain) use($behavior) {
$data = $chain->next($self, $params, $chain);
switch ($params['type']) {
case 'first':
$entity = $behavior->invokeMethod('_assignAccessors', [$data]);
return $entity;
break;
case 'all':
foreach ($data as $datum) {
$entity = $behavior->invokeMethod('_assignAccessors', [$datum]);
}
return $data;
break;
default:
return $data;
break;
}
});
$model::applyFilter('delete', function ($self, $params, $chain) use($behavior) {
$entity = $params['entity'];
$entityData['model'] = $entity->model();
$entityData['data'] = $entity->data();
$configs = $behavior->_config;
$fields = $behavior::_formattedFields($configs['fields']);
if (!isset($configs['placeholders'])) {
$configs['placeholders'] = [];
}
$results = [];
foreach ($fields as $field => $name) {
$path = UploadableStorage::config($name)['remove'];
$existingFile = $entity->export()['data'][$field];
$options['placeholders'] = UploadableStorage::placeholders($existingFile, $configs['placeholders'] + ['field' => $field], $entityData);
$destination = UploadableStorage::interpolate($path, $options);
$results[] = UploadableStorage::remove($destination, $options + ['name' => $name]);
}
$deleted = $chain->next($self, $params, $chain);
return $deleted && !in_array(false, $results, true);
});
}
}