Google Analytics API blank screen when querying accounts? - php

Question

I am novice to Google Analytics Api. I just started working on a small project where I want to pull data from the API and display it on each user’s Dashboard, using one single Google Analytics Account. I tried to follow the tutorial provided by google and made adjustments where required due to update to the library.
I am working on a codeigniter based platform and I was able to create a Google Client Object and also to make use of a refresh token which is saved in the database. I use the refresh token in order to have the data available on the dashboard without having to manually login every time.
The access token is there every time when I am logged in, and I can use it to set the client access token and create a Google Service Analytics object ($service = new Google_Service_Analytics($client);). I am printing the service and I can see the client id, client secret, etc and the access token being passed to it; but other like Google_Service_Analytics_DataGa_Resource Object are empty ( I do not know if they should be like that or not at this particular step ?).
When I am trying to request the user accounts
$accounts = $analytics->management_accounts->listManagementAccounts();,
I get a blank screen and my view is not being rendered.
I could not find such a problem being encountered before, so I am a bit confused why is happening. I do not get any error messages or anything that might point me to the cause of it or the right direction.
Note: I did managed to make it work using the same credentials trough JavaScript, but in this case it is not what I am looking for. I was able to retrieve data, display data in charts,etc using JS. I am new to making posts, so if anything is required from my part in order for you to have a better idea of what is going on, please do let me know.
I would greatly appreciate it I could get any indication to why that might be happening, or anything that would put me on the right path.
Codeigniter controller Class as follows
// Step 1 - Load PHP Client Libraries
require_once APPPATH.'libraries/Google/Client.php';
require_once APPPATH.'libraries/Google/Analytics.php';
class GoogleTest extends CI_Controller {
public function index(){
$this->load->helper(array('url','form'));
$this->load->model('googleapi_model'); //used to get the refresh token
// Step 2 - Start a session to persist credentials
session_start();
// Step 3 - Create and configure a new client object
$client = new Google_Client();
$client->setApplicationName("API Project");
// Insert client id, api key, client secret, project scope and redirect uri
$client->setDeveloperKey("***************");
$client->setClientId('********************');
$client->setClientSecret('******************');
$client->setRedirectUri('****************');
$client->setScopes(array('https://www.googleapis.com/auth/analytics.readonly'));
// Check if refresh token exists, it is used to login users automatically & it is being generated only once when you login the first time from the created
// google analytics app, this will take precedence to Step 4 or 6 below ;
if(count($this->googleapi_model->getGoogleRefreshToken()) > 0){
$db_refresh_token = $this->googleapi_model->getGoogleRefreshToken();
$client->refreshToken($db_refresh_token[0]->refreshtoken);
$_SESSION['token'] = $client->getAccessToken();
}else{
if ($client->getAccessToken()) {
$token = $client->getAccessToken();
$authObj = json_decode($token);
$refreshToken = $authObj->refresh_token;
if(isset($refreshToken) && $refreshToken != null){
$this->googleapi_model->insertGoogleRefreshToken($refreshToken);
}
}
}
//Step 4 - Handle authorization flow from the server
if (isset($_GET['code'])) {
$client->authenticate($_GET['code']);
$_SESSION['token'] = $client->getAccessToken();
$redirect = 'http://' . $_SERVER['HTTP_HOST']. $_SERVER['PHP_SELF'];
header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}
// Step 5 - Retrieve and use stored credentials
if (isset($_SESSION['token'])) {
$client->setAccessToken($_SESSION['token']);
}
// Stept 6 - Either prompt the user to login or run the demo
if(!$client->getAccessToken()){
$authUrl = $client->createAuthUrl();
$this->data['auth'] = $authUrl;
}else{ //Create analytics service object
echo 'authenticated';
$analytics = new Google_Service_Analytics($client);
//TILL HERE MY CODE WORKS FINE, NO ERRORS, VIEW BEING RENDERED
$accounts = $analytics ->management_accountSummaries->listManagementAccountSummaries();
// $accounts = $analytics->management_accounts->listManagementAccounts();
echo '<pre>';
print_r($analytics);
echo '</pre>';
}
$this->data['content'] = '/public/dashboard/google_test';
$this->load->view('template/template', $this->data);
}

Answer 1

Make sure you're logged into the google account that API app is in.
And that you have clicked 'connect'.
Then run the script.
Also turn on error reporting (including notices)