protected function _init() {
		parent::_init();
		$this->request = $this->request ?: $this->_config['request'];
		$this->response = $this->_instance('response', $this->_config['response']);

		if (!$this->request || $this->_render['type']) {
			return;
		}
		if ($this->_render['negotiate']) {
			$this->_render['type'] = $this->request->accepts();
			return;
		}
		$this->_render['type'] = $this->request->get('params:type') ?: 'html';
	}