创建代码修复时，您可以选择返回Task<Document>和Task<Solution>。显然，当您（可能）修改多个文档（例如Rename操作）时，应选择后者。
如果仅修改当前文档，是否有关于应该返回的内容的指南？返回Task<Document>似乎最合乎逻辑，但下一步又做了什么？如果它继续返回Task<Solution>而没有其他任何东西，我们也可以自己做。
答案 0 :(得分：4)
如果您不覆盖 // Google Project API Credentials
$clientId = '### removed by Billy, DO NOT INSERT PROPER CREDENTIALS';
$clientSecret = '### removed by Billy, DO NOT INSERT PROPER CREDENTIALS';
$redirectUrl = base_url() . 'user_authentication/';
// Google Client Configuration
$gClient = new Google_Client();
$gClient->setApplicationName('hashtag');
$gClient->setClientId($clientId);
$gClient->setClientSecret($clientSecret);
$gClient->setRedirectUri($redirectUrl);
$google_oauthV2 = new Google_Oauth2Service($gClient);
if (isset($_REQUEST['code'])) {
$gClient->authenticate();
$this->session->set_userdata('token',$gClient->getAccessToken());
redirect($redirectUrl);
}
$token = $this->session->userdata('token');
if (!empty($token)) {
$gClient->setAccessToken($token);
}
if ($gClient->getAccessToken()) {
$userProfile = $google_oauthV2->userinfo->get();
// Preparing data for database insertion
$userData['oauth_provider'] = 'google';
$userData['oauth_uid'] = $userProfile['id'];
$userData['first_name'] = $userProfile['given_name'];
$userData['last_name'] = $userProfile['family_name'];
$userData['email'] = $userProfile['email'];
$userData['gender'] = $userProfile['gender'];
$userData['locale'] = $userProfile['locale'];
$userData['profile_url'] = $userProfile['link'];
$userData['picture_url'] = $userProfile['picture'];
// Insert or update user data
$userID = $this->user->checkUser($userData);
if(!empty($userID)){
$data['userData'] = $userData;
$this->session->set_userdata('userData',$userData);
} else {
$data['userData'] = array();
}
} else {
$data['authUrl'] = $gClient->createAuthUrl();
}
// $this->load->view('user_authentication/index',$data);
echo $this->load->view($div,$data);
}
// -------- MODEL FUNCTION --------------
public function checkUser($data = array()){
$this->db->select($this->primaryKey);
$this->db->from($this->tableName);
$this->db->where(array('oauth_provider'=>$data['oauth_provider'],'oauth_uid'=>$data['oauth_uid']));
$prevQuery = $this->db->get();
$prevCheck = $prevQuery->num_rows();
if($prevCheck > 0){
$prevResult = $prevQuery->row_array();
$data['modified'] = date("Y-m-d H:i:s");
$update = $this->db->update($this->tableName,$data,array('id'=>$prevResult['id']));
$userID = $prevResult['id'];
}else{
$data['created'] = date("Y-m-d H:i:s");
$data['modified'] = date("Y-m-d H:i:s");
$insert = $this->db->insert($this->tableName,$data);
$userID = $this->db->insert_id();
}
return $userID?$userID:FALSE;
}
，base implementation只会从GetChangedSolutionAsync获得解决方案。
覆盖GetChangedDocumentAsync的目的只是让你编写更简单的代码。