framework/base/Controller.php
public function getViewPath()
    {
        if ($this->_viewPath === null) {
            $this->_viewPath = $this->module->getViewPath() . DIRECTORY_SEPARATOR . $this->id;
        }

        return $this->_viewPath;
    }
public function getViewPath()
    {
        if ($this->_viewPath === null) {
            $this->_viewPath = $this->module->getViewPath() . DIRECTORY_SEPARATOR . $this->id;
        }

        return $this->_viewPath;
    }
Returns the directory containing view files for this controller.
The default implementation returns the directory named as controller [[id]] under the [[module]]'s
[[viewPath]] directory.
@return string the directory containing the view files for this controller.