/**
* 微信OAuth2授权
*
* @param string $redirect_uri
* @param string $state 可选值：'base' or 'detail'
*/
public function authorizing($redirect_uri, $state = 'base')
{
if (!in_array($state, array('base', 'detail'))) {
$state = 'base';
}
$scope = 'detail' == $state ? 'snsapi_userinfo' : 'snsapi_base';
$url = $this->oauth->setConfig(array('redirect_uri' => $redirect_uri, 'scope' => $scope, 'state' => $state))->authorize_url();
Response::redirect($url);
}
