从WordPress站点调用Valence API D2L/Brightspace API

根据create-user路由的文档，作为响应的400状态码表示以下两种情况之一:您以某种方式为新用户记录提供了无效数据，或者后端服务(出于某种原因)无法创建新用户记录(非常罕见，但确实会发生)。在第二种情况下，您将在错误描述中获得一条更详细的消息，指出创建失败。如果你没有得到这个，最有可能的原因是:

• 您发送的不是您认为要发送的内容;

• 您提供了一个无效的RoleId—它在您测试的环境中是有效的，但在生产环境中，RoleId不存在。这种情况有时会发生，但在这种情况下，我怀疑不是。要进行验证，请先尝试通过Id取回RoleId，然后查看这些结果。

• 你提供了一个已经存在于系统中的UserName:这个属性是你登录到Brightspace系统时用来识别自己的ID，所以它必须是唯一的。偶尔，客户端会发现他们正在使用的"临时测试"UserName已经存在于他们的后端服务中，不管出于什么原因，这可能会导致意外的失败。

您可以尝试通过先通过UserName取回一个用户来验证您是否已经有该用户的记录。

我已经能够在一些帮助下解决这个问题。下面是我使用的代码，以防将来有人遇到这种情况。

1. 摘录保存表单的PHP:

                           <input class="required textInput" id="name_first" name="name_first"  size="35" maxlength="255" placeholder= "First Name"  type="text" value="<?php echo $_SESSION["student_profile"]["name_first"]; ?>" required />
                           <label class="required_lables" for="name_first"><em></em></label>
                           <!--  Middle Initial  -->
                           <label for="name_middle"><em></em></label>
                           <input class="textInput optional" id="name_middle" name="name_middle" size="35" maxlength="255" placeholder= "Middle Name (optional)" type="text" value="<?php echo $_SESSION["student_profile"]["name_middle"]; ?>" />
                           <!--  Last Name  -->
                           <input class="required textInput" id="name_last" name="name_last"  size="35" maxlength="255" placeholder= "Last Name" type="text" value="<?php echo $_SESSION["student_profile"]["name_last"]; ?>" required/>
                           <label class="required_lables" for="name_last"><em></em></label>
   

2. 表单提交页面。Ajax调用在这里进行:

   $_SESSION['student_profile'] = $_POST;

   $ first_name = $ _SESSION [' student_profile '] [' name_first '];

   $ middle_name = $ _SESSION [' student_profile '] [' middle_name '];

   $ last_name = $ _SESSION [' student_profile '] [' last_name '];

   邮件= _SESSION美元[' student_profile ']['邮件'];

   echo '<script>';
   echo 'var data = {"OrgDefinedId": "'. $orgDefinedId .'",  "FirstName": "'. $first_name .'",  "MiddleName": "'. $middle_name .'",  "LastName": "'. $last_name .'",  "ExternalEmail": "'. $email .'",  "UserName": "'. $uName .'",  "RoleId": 103,  "IsActive": true,  "SendCreationEmail": false};';
   echo 'var type = "CREATE";';
   echo 'window.$vars = {dataField : data};';
   echo 'window.$vartype = {typeField : type};';
   echo 'doAPIRequest();';//direction to js file with the ajax call
   echo '</script>';
   ?>
   

3. 在wordpress中使用的Ajax:使用的操作称为example_wordpress_action，它在functions.php

   中定义

   function doAPIRequest() {
    var host = "myHostSite.com";
    var port = "443";
    var scheme = "https";
    var req = "/d2l/api/lp/1.4/users/";
    var method =  "POST";
    var typeAPI = window.$vartype.typeField;
    var ajaxurl = "/wp-admin/admin-ajax.php";  
    var data = window.$vars.dataField;     
    var userName = window.$varsUname.useNameField;
    var anon = "";
    var appId = myAppID;
    var appKey = myAppKey;
           $.ajax({
               url: ajaxurl,
               data: {
                   action : 'example_wordpress_action',
                   host: host,
                   port: port,
                   scheme: scheme,
                   anon: anon,
                   apiRequest: req,
                   typeapp: typeAPI,
                   apiMethod: method,
                   appUser: userName,
                   data: data,
                   appId: appId,
                   appKey: appKey
               },
               success: function(data) {
                   var output;
                   if(data == '') {
                       output = 'Success!';
                       return;
                   } else {
                       try {
                           output = JSON.stringify(JSON.parse(data), null, 4);
                       } catch(e) {
                           output = "Unexpected non-JSON response from the server: " + data;
                       }
                   }
               },
               error: function(jqXHR, textStatus, errorThrown) {               
               },
           });
   

   }

4. functions .php中使用wp_remote_request:

function example_wordpress_action_function() {

    $host = $_GET['host'];
    $port = $_GET['port'];
    $scheme = $_GET['scheme'];
    $data = $_GET['data'];
    $apiMethod = $_GET['apiMethod'];
    $appId = $_GET['appId'];
    $appKey = $_GET['appKey'];
    $appRequest = $_GET['apiRequest'];
    $appUserName = $_GET['appUser'];
    $data_string = json_encode($data);
    $userId = $myUserId;
    $userKey = $myUserKey;
    $authContextFactory = new D2LAppContextFactory();
    $authContext = $authContextFactory->createSecurityContext($appId, $appKey);
    $hostSpec = new D2LHostSpec($host, $port, $scheme);
    $opContext = $authContext->createUserContextFromHostSpec($hostSpec, $userId, $userKey);
    $uri = $opContext->createAuthenticatedUri($appRequest, $apiMethod);
    $headers = array( 'authorization' => 'basic ', 'accept' => 'application/json', 'content-type' => 'application/json', 'content-length' => strlen( $data_string ) ); 
    $post = array( 'method' => $apiMethod, 'headers' => $headers, 'body' => $data_string );
    $createResponses = wp_remote_request($uri, $post);
    die();
}
add_action( 'wp_ajax_example_wordpress_action', 'example_wordpress_action_function' );
add_action("wp_ajax_nopriv_example_wordpress_action", "example_wordpress_action_function");