3
To attach a library only when a node in a certain view mode is displayed you can use hook_entity_view/hook_ENTITY_TYPE_view like following.
/**
* Implements hook_ENTITY_TYPE_view().
*/
function MYMODULE_node_view(array &$build, \Drupal\Core\Entity\EntityInterface $entity, \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display, $view_mode) {
...
3
hook_entity_presave() is called for every entity being saved which means that, since that hook_entity_presave() implementation is saving an entity, it is being invoked twice.
Using method_exists() is generally wrong, as in PHP is generally preferable to check if the object is an instance of a class implementing an interface or a class extending another ...
2
hook_entity_presave() runs when any entity is inserted or saved; thus, it runs twice in your case, since you have a Node and a Webform entity being saved.
You would have to add a conditional to check the entity type as @berramou's answer suggests.
Alternatively, you could use hook_ENTITY_TYPE_presave() and target the node.
/*
* Implements ...
2
If you want the hook_entity_presave() to only focus on nodes and not on webforms, you can check the entity type like in the following code.
/**
* Implements hook_entity_presave().
*/
function YourModule_entity_presave(Drupal\Core\Entity\EntityInterface $entity) {
if ($entity->getEntityTypeId() == 'node') {
// Do you webform creation code here
...
1
You need to get the values first you want to work with. For example the node object is inside $variables['elements']['#node']. In the sample below field_foobar is a text field. Depending on what your field type is you may need to get the value you want a little bit differently. And also maybe sanitize it first before you use it in a template suggestion (...
1
To check for error codes you can use the following snippet. It won't work for 200 status codes though. Since there's no exception.
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
$exception = \Drupal::requestStack()->getCurrentRequest()->attributes->get('exception');
if ($exception instanceof HttpExceptionInterface) {
$...
1
There is no hook fired in delete of block, as you can see in the list of block hooks here block.api.php.
There is a topic in Drupal forum here.
I think the best way to handle this is by hook_form_alter something like.
/**
* Implements hook_form_alter().
*/
function YourModule_form_alter(&$form, $form_state, $form_id) {
if ($form_id == '...
1
I have this to check that the users has remaining downloads or redirect them to an upgrade page.
/**
* Implements hook_file_download().
*/
function mymodule_file_download($uri) {
// Check if user is logged in
if (\Drupal::currentUser()->isAuthenticated()) {
// Load entity of current user
$current_user = \Drupal\user\Entity\User::load(\...
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