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<?php
/**
* Elgg add like action
*
*/
$entity_guid = (int) get_input('guid');
//check to see if the user has already liked the item
if (elgg_annotation_exists($entity_guid, 'likes')) {
system_message(elgg_echo("likes:alreadyliked"));
forward(REFERER);
}
// Let's see if we can get an entity with the specified GUID
$entity = get_entity($entity_guid);
if (!$entity) {
register_error(elgg_echo("likes:notfound"));
forward(REFERER);
}
// limit likes through a plugin hook (to prevent liking your own content for example)
if (!$entity->canAnnotate(0, 'likes')) {
// plugins should register the error message to explain why liking isn't allowed
forward(REFERER);
}
$user = elgg_get_logged_in_user_entity();
$annotation = create_annotation($entity->guid,
'likes',
"likes",
"",
$user->guid,
$entity->access_id);
// tell user annotation didn't work if that is the case
if (!$annotation) {
register_error(elgg_echo("likes:failure"));
forward(REFERER);
}
// notify if poster wasn't owner
if ($entity->owner_guid != $user->guid) {
likes_notify_user($entity->getOwnerEntity(), $user, $entity);
}
system_message(elgg_echo("likes:likes"));
// Forward back to the page where the user 'liked' the object
forward(REFERER);
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