/**
* Getter for field with name $name
* @return Field
*/
public function getField($name, $includeExtends = false)
{
if (key_exists($name, $this->fields)) {
return $this->fields[$name];
} elseif ($this->isExtended() and $includeExtends) {
$result = $this->extends->getField($name, true);
return $result;
} else {
throw new Exception("field '{$name}' does not exists");
}
}
/**
* Finds field object from relation notation
* @param string $sourceField
* @return Field
*/
protected function fieldLookup($sourceField)
{
if (preg_match("#^(id|pk)\$#i", $sourceField, $_match)) {
if ($this->model->getPrimaryKey() or $this->model->hasField('id')) {
return $_match[1] == 'pk' ? $this->model->getField($this->getModel()->getPrimaryKey()) : $this->model->getField($_match[1]);
} else {
throw new Exception('Model does not have primary key nor id field');
}
} elseif (preg_match("#^[a-z0-9]+(__([a-z0-9_]+))+\$#i", $sourceField, $_match)) {
return $this->getModel()->pathLookup($sourceField);
} elseif (!preg_match("#__#", $sourceField) && $this->getModel()->hasField($sourceField)) {
return $this->getModel()->getField($sourceField, true);
} else {
throw new Exception("Unable to translate field '{$sourceField}'.");
}
}
