1) Commented out nothing has changed.
2) Yes there are 2 oyun and 1 kurs posts.
3) I have only this one related to post types :
add_theme_support('post-formats',
array(
'gallery',
'link',
'image',
'quote',
'video',
'audio',
'oyun',
'kurs'
)
);
I am extending twentyfourteen and this is my child theme. I am not sure twentyfourteen filters. Checking them also.
I have found my answer, This is the solution :
<?php
$attachment_id = get_post_thumbnail_id($post->ID); // attachment ID
$image_attributes = wp_get_attachment_image_src( $attachment_id,'portfolio-item-resized' ); // returns an array
if( $image_attributes ) {
?>
<div data-width="240" data-height="161" data-thumbnail="<?php echo $image_attributes[0]; ?>"></div>
<div data-popup="<?php echo $image_attributes[0]; ?>" title="<?php the_title(); ?>"></div>
<?php } ?>
