Ajax pagination for Instagram API tried to fix bug

Question

I'm trying to fix Ajax pagination for Instagram API

Shown only 20 photos. "Load more" button didn't work.

In console:

Uncaught ReferenceError: maxid is not defined

Here is index.php:

 <script>
 $(document).ready(function() {
 $('#more').click(function() {
 var max_id = $(this).data('nextid');


 $.ajax({
 type: 'GET',
 url: 'ajax.php',
 data: {
 max_id: maxid
 },
 dataType: 'json',
 cache: false,
 success: function(data) {
 // Output data
 $.each(data.images, function(i, src) {
 $('#photos').append('<li><img src="' + src + '"></li>');
 });

 // Store new maxid
 $('#more').data('maxid', data.next_id);
 }
 });
 });
 });
</script>

<?php


 require_once 'instagram.class.php';


$instagram = new Instagram(array(
  'apiKey' => '*****',
  'apiSecret' => '*****',
  'apiCallback' => '******'

));

// Receive OAuth code parameter
$code = $_GET['code'];

if (true === isset($code)) {

$data = $instagram->getOAuthToken($code);

$instagram->setAccessToken($data);


$media = $instagram->getUserMedia();


}
?>


<ul id="photos">

<?php foreach( $media->data as $data ): ?>
<li><img src="<?php echo $data->images->thumbnail->url ?>"></li>
<?php endforeach; ?>

<?php echo "<br><button id=\"more\" data-maxid=\"{$media->pagination->next_max_id}\">Load more ...</button>"; ?>

ajax.php:

require_once 'instagram.class.php';
$instagram = new Instagram(array(
  'apiKey' => '****',
  'apiSecret' => '*****',
  'apiCallback' => '*******'

));

// Receive OAuth code parameter
$code = $_GET['code'];

if (true === isset($code)) {

$data = $instagram->getOAuthToken($code);

 // Initialize class for public requests
 $instagram->setAccessToken($data);

$media = $instagram->getUserMedia();


 // Receive AJAX request and create call object
 $maxID = $_GET['next_max_id'];

 $clientID = $instagram->getApiKey();

 $call = new stdClass;
 $call->pagination->next_max_id = $maxID;
 $call->pagination->next_url = "https://api.instagram.com/v1/users/self/media/recent?client_id={$clientID}&max_id={$maxID}";


 // Receive new data
 $media = $instagram->pagination($call);

 // Collect everything for json output
 $images = array();
 foreach ($media->data as $data) {
 $images[] = $data->images->thumbnail->url;
  }
 echo json_encode(array(
 'next_id' => $media->pagination->next_max_id,
'max_id' => $media->pagination->max_id,
 'images' => $images
 ));

I am using https://github.com/cosenary/Instagram-PHP-API

Thank You!

Answer 1

How can it be clearer than:

Uncaught ReferenceError: maxid is not defined

maxid is not defined in your code. What is defined is max_id in this line:

var max_id = $(this).data('nextid');

Answer 2

There are just 2 locations with maxid :

Here:

$.ajax({
...
max_id: maxid
},

and here:

// Store new maxid
$('#more').data('maxid', data.next_id);

When you replace these occurences with your defined max_id (thanks to @mathieu) it should be fixed.

In your ajax.php you have a line:

$maxID = $_GET['next_max_id'];

This doesn't correspond to your call above, where you have a max_id . Seems like you mixed some next/max/id . If you look through your code and clean up these ids, it should work.

Answer 3

It looks like

.data('nextid');

is a careless error as that doesn't exist in your DOM. Unless it's somewhere else and you haven't posted it.

Did you mean to have

.data('maxid');

?

Answer 4

You need to pass the event argument with the click and get the data from event.target .
Change the first lines of codes into this:

$('#more').click(function( event ) {
var max_id = $(event.target).data('nextid');