/**
* Retrieve image URL with the properly-sized thumbnail.
*
* @see get_post_meta, wp_get_attachment_image_src
*
* @param string $slug Optional. CMB tail ID.
* @param int $pid Optional. Post ID.
* @param string $post_type Optional. Post Type identifier.
* @return string Image URL.
*/
public static function thumbnail($slug = 'image_id', $pid = '', $post_type = '')
{
if (empty($pid)) {
$pid = get_the_id();
}
if (empty($post_type)) {
$post_type = get_post_type();
}
$img_id = get_post_meta($pid, cmb_prefix($post_type) . $slug, true);
$img = wp_get_attachment_image_src($img_id, $post_type . '-thumb');
return $img[0];
}
public function test_cmb_prefix()
{
$slug = 'portfolio';
$this->assertEquals('_cmb2_portfolio_', cmb_prefix($slug));
}
