I've been asked to make a change to a Drupal 8 site (I'm not a Drupal Developer), the client would like an enquiry form linking up with Dotmailer. Within the theme I've tried to create a handler based on some information that I found online. But I don't know if it's doing anything. I've checked the logs section of Drupal and there isn't anything logged to indicate that the custom handler was actioned.
My theme is named abc-primary, and inside the theme folder I have created the file abc_primary.theme with the following contents;
<?php
use Drupal\media\Entity\Media;
use Drupal\Core\Form\FormStateInterface;
/**
* Implements hook_form_system_theme_settings_alter().
*/
function abc_primary_form_system_theme_settings_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state) {
$theme_file = drupal_get_path('theme', 'abc_primary') . '/abc_primary.theme';
$build_info = $form_state->getBuildInfo();
if (!in_array($theme_file, $build_info['files'])) {
$build_info['files'][] = $theme_file;
}
$form_state->setBuildInfo($build_info);
$form['#submit'][] = 'abc_primary_form_system_theme_settings_submit';
}
function abc_primary_form_system_theme_settings_submit(&$form, \Drupal\Core\Form\FormStateInterface $form_state) {
// TODO: Extra submission logic.
// This submit handler will be called before default submit handler for this form.
\Drupal::logger('mymodule')->notice('mymodule submit ') ;
}
Is the above correct or am I doing something wrong?
Create a new module, and define following method:
function mymodule_form_node_form_alter(&$form, FormStateInterface $form_state) {
//you may want to check your form_id by
// $form['#form_id']
$form['actions']['submit']['#submit'][] = 'mymodule_node_form_submit';
}
function mymodule_node_form_submit($form, FormStateInterface $form_state) {
// get values from form_state
//log or send to desired web service
}
Hope it helps.
Related
I wish to create add an action that goes to the new action but pre-populates the entity based on added url parameters. For example to set an association.
The documentation shows how to override the createEntity method the set values, but this method has no way to get the parameters from the request so I cannot set the association based on a passed parameter.
This is similar to How to set a default value in AssociationField EasyAdmin 3 but as mentioned in this case the request is not available to use.
Turns out we can get the request from the request stack.
public function createEntity(string $entityFqcn)
{
/** #var AgentAccreditation $entity */
$entity = parent::createEntity($entityFqcn);
$request = $this->get('request_stack')->getCurrentRequest();
if ($agentId = $request->query->get('agentId')) {
$agentRepository = $this->getDoctrine()->getRepository(Agent::class);
$agent = $agentRepository->find($agentId);
$entity->setAgent($agent);
}
return $entity;
}
}
I'm trying to create a custom field for a view in Drupal 8 which allows to perform an action without changing the page (link). I guess I have to create a form inside that custom field but I do not know how to achieve it.
Any idea on how to do it or other alternative without redirecting to a route?
The view will be a list of custom entities and I need a button for each of the lines.
Thanks in advance!
Finally I solved it by following this steps:
I created a view custom field (generate:plugin:views:field with
drupal console)
I created a form (generate:form)
Then, in the view custom field render function return the form:
$form = \Drupal::formBuilder()->getForm('Drupal\test_module\Form\TestForm', $values->_entity->ID());
return $form;
It's important to notice that an incremental (dynamic) formId is needed for things to work properly. I did that by creating a static variable and a __construct() method as follows:
protected static $instanceId;
public function getFormId() {
return 'my_form_id_' . self::$instanceId;
}
public function __construct(){
if (empty(self::$instanceId)) {
self::$instanceId = 1;
}
else {
self::$instanceId++;
}
}
example:
path: '/example'
defaults:
_controller: '\Drupal\example\Controller\ExampleController::content'
requirements:
_custom_access: '\Drupal\example\Controller\ExampleController::access'
This custom_access checker will be executed only when someone call mywebsite.domain/example.
But I want that this controller check all urls, run independent of path.
How can I create an independent custom access controller?
The idea for preventing routing access to a very low level (Kernel one to be precise), is to register a EventSubscriber service, subscribing to the REQUEST KernelEvent.
First of all, you will need to create a new custom module.
Once done, you will be able to create a new my_module.services.yml file which will declare a new EventSubscriber
services:
my_module.subscriber:
class: Drupal\my_module\EventSubscriber\MyCustomSubscriber
tags:
- { name: event_subscriber}
Then, create the class referenced above in my_module/src/EventSubscriber/MyCustomSubscriber.php.
Here is a tiny example which checks if the current user is logged-in before accessing any page, otherwise redirect on the login page. This following code is not complete (see the last reference for a better explanation) but it shows you the basics (subscription to the event, dependency injection, event redirection, ...)
<?php
namespace Drupal\my_module\EventSubscriber;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\KernelEvents;
class MyCustomSubscriber implements EventSubscriberInterface {
/**
* The current route match.
*
* #var \Drupal\Core\Routing\RouteMatchInterface
*/
protected $routeMatch;
/**
* Class constructor.
*
* #param \Drupal\Core\Routing\RouteMatchInterface $route_match
* The current route match.
*/
public function __construct(RouteMatchInterface $route_match) {
$this->routeMatch = $route_match;
}
/**
* {#inheritdoc}
*/
static function getSubscribedEvents() {
$events[KernelEvents::REQUEST][] = ['isLoggedIn'];
return $events;
}
/**
* It verify the page is requested by a logged in user, otherwise prevent access.
*
* #param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
* A response for a request.
*/
public function isLoggedIn(GetResponseEvent $event) {
$route_name = $this->routeMatch->getRouteName();
// Don't run any assertion on the login page, to prevent any loop redirect.
// If intend to be used on a production project, please #see
// https://www.lucius.digital/en/blog/drupal-8-development-always-redirect-all-logged-out-visitors-to-the-login-page for a better implementation.
if ($route_name === 'user.login') {
return;
}
if (\Drupal::currentUser()->isAnonymous()) {
$dest = Url::fromRoute('user.login')->toString();
$event->setResponse(RedirectResponse::create($dest));
}
}
}
To go further, you may read those explanations of registering event subscribers & some use case:
Responding to Events in Drupal 8
How to Register an Event Subscriber in Drupal 8
Always redirect all logged out visitors to the login page
I hope it will help you.
In drupal 8 I have two separate roles admin and manager.
If user logins with manager username and password, should be redirected to different page.
We can use module but I need to do it through custom code in drupal 8.
Please help me in the code to perform this condition in drupal 8 custom module.
You can use hook_form_alter to register your custom submit handler. Sample provided below.
/**
* Implements hook_form_alter().
*/
function module_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
//contact page form
if ($form_id == 'user_register_form') {
$form['actions']['submit']['#submit'][] = 'module_contact_submit';
}
}
function module_contact_submit(&$form, \Drupal\Core\Form\FormStateInterface $form_state)
{
$redirect_path = "/redirection-path";
$url = url::fromUserInput($redirect_path);
$form_state->setRedirectUrl($url);
}
Hope this helps
Thanks
you can use hook_user_login.
I've solved in this way:
/**
* Implements hook_user_login().
*/
use Symfony\Component\HttpFoundation\RedirectResponse;
use Drupal\Core\Url;
function modulename_user_login($account) {
$routeName = 'entity.node.canonical';
$nodeId = 1;
$routeParameters = ['node' => $nodeId];
$url = \Drupal::url($routeName, $routeParameters);
$roles = $account->getRoles();
if(in_array('administrator', $roles)){
$response = new RedirectResponse($url);
$response->send();
return;
}
}
I am currently trying to wrap my head around Drupal 8 module development best practices. All I'm trying to do is to have a simple form Demoform on a page where a user can input an email address. When the form gets submitted I'd like to dispatch an event demo_form.save. Also I need a block that then displays the user's email address within the block (let's say sidebar second). I have already implemented an EventSubscriber before as a test, so the event gets properly dispatched etc. and I also subscribed to the event (but how to get the information inside a block) Now my question: what's the best practice for this workflow:
File DemoForm.php
class DemoForm extends ConfigFormBase {
...
$event = $dispatcher->dispatch('demo_form.save', $e);
...
}
File DemoEventSubscriber.php
class DemoEventSubscriber implements EventSubscriberInterface {
static function getSubscribedEvents() {
$events['demo_form.save'][] = array('onConfigSave', 0);
return $events;
}
public function onConfigSave($event) {
...
}
}
This works and I can access the input from the form inside the DemoEventSubscriber class and do whatever I want with it.
But now I'd like to display the email address inside the block markup. How should this best be done ?
File DemoBlock.php
class DemoBlock extends BlockBase {
public function build() {
// here return markup with email address from form
}
}
How do I combine the eventsubscriber and the block markup ? Can Blockbase itself implement the EventSubscriberInterface and be independent from DemoEventSubscriber.php ? Or do I need to register a service that transmits the form data and then access the service within the block's build() function ? Or is there another way I am missing ?
Thanks for any input.
I am not sure what you need the event for, but to dispatch the event, use the code you have already displayed in your submitForm() function of the DemoForm class.
Because you are using ConfigFormBase, I assume that you want to store the submitted e-mail address in config, use code like from the config form documentation:
/**
* {#inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state) {
// Retrieve the configuration
$this->config('mymodule.settings')
// Set the submitted configuration setting
->set('email', $form_state->getValue('email'))
->save();
// Assuming you have injected the dispatcher.
$event = $this->dispatcher->dispatch('demo_form.save', $e);
parent::submitForm($form, $form_state);
}
Within you block, you can then access the configuration for example with the static wrapper or inject the service Simple Configuration API
$config = \Drupal::config('mymodule.settings');
$message = $config->get('email');
Note that with this you can always set only one e-mail address. I don't know if that was your purpose. If you want to collect multiple e-mails then you should store them in the database and not in config.