API Pagination Link header empty

[jos...@gmail.com]

So I am testing out the API and I am running into an issue when pulling all users. I have more then 10 for my account, it pulls the first 10 but when I check the Link header for the next, first, last the URLs are not populated.

My Response:
[Link] => ; rel="next",; rel="first",; rel="last"

Expected Response according to this page: https://canvas.instructure.com/doc/api/file.pagination.html

Link: <https://<canvas>/api/v1/courses/:id/discussion_topics.json?page=2&per_page=10>; rel="next",
      <https://<canvas>/api/v1/courses/:id/discussion_topics.json?page=1&per_page=10>; rel="first",
      <https://<canvas>/api/v1/courses/:id/discussion_topics.json?page=5&per_page=10>; rel="last"

As you can see my URLs are empty...

I am using PHP, here is my code:

<?php
global $authorization;
$authorization = 'xxxxxxxxxxxxxxxxxx';

function canvas_get($url) {
        global $authorization;
        $options = array(
                        'connecttimeout' => 120, // timeout on connect
                        'timeout' => 120, // timeout on response
                        'redirect' => 10, // stop after 10 redirects
        );
        $headers = array(
                        'Authorization' => 'Bearer ' . $authorization
        );
        $request = new HttpRequest($url);
        $request->setMethod(HTTP_METH_GET);
        $request->setContentType("application/json");
        $request->setOptions($options);
        $request->setHeaders($headers);
        $request->send();
        return array('status_code'=>$request->getResponseCode(), 'response'=>$request->getResponseBody(),'header'=>$request->getResponseHeader());
}

$course_results = canvas_get('https://xxxxxxxxx.com//api/v1/accounts/1/users');
echo '<pre>';
print_r($course_results['header']);
echo '</pre>';

?>
Enter code here...

Any ideas why the urls are not getting populated?

[ry...@ryanhiebert.com]

The last time I looked at this, the discussion topics endpoint didn't paginate at all. If you have more then 10 discussions, it'll show all of them at once. Check that.

There's another endpoint (recent_students, I think) that doesn't give the pagination links if there are less than 10, so you can't assume that the pagination links will be there.

Hope that helps,

Ryan

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[jos...@gmail.com]

But I for sure have more than 10 users and it is only returning 10. How can I get the rest?

[jos...@gmail.com]

To answer my own question a while loop should work just fine to check against the number of array elements and if it is equal to the number limit get the next page.

[Ryan Hiebert]

I thought your issue was that there was no next link. Did you end up having to construct it manually?

—
Sent from Mailbox for iPhone

[jos...@gmail.com]

That is exactly what I did. Seems to work just fine.