/**
* check if a certain field exists in the mapper or
* or is a virtual relation field
* @param string $key
* @param bool $relField
* @return bool
*/
function exists($key, $relField = false)
{
if (!$this->dry() && $key == '_id') {
return true;
}
return $this->mapper->exists($key) || $relField && isset($this->fieldConf[$key]['relType']);
}
/**
* Get mapper value
*
* @param string
* @return string
*/
protected function value($name, $default = null)
{
return $this->mapper && $this->mapper->exists($name) ? $this->mapper->get($name) : $this->get($name, $default);
}
/**
* Get current field value
* @return mixed
*/
protected function getValue()
{
return $this->cursor ? $this->map && $this->map->exists($this->cursor) ? $this->map->get($this->cursor) : (isset($this->lookup[$this->cursor]) ? $this->lookup[$this->cursor] : null) : null;
}