Questions tagged [event-subscriber]

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7 views

Change system.404 path dynamically based on context

I have a site that makes use of the groups module to denote various locations all with their own content. I'd like to give the ability to programmatically alter the system.404 path depending on the ...
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1answer
31 views

adding new validation method using HookEventDispatcherInterface::FORM_ALTER event

I'm trying to add a new validation method for 'user_login_form' using HookEventDispatcher module and events: class MyFormEventsSubscriber implements EventSubscriberInterface { public static function ...
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1answer
37 views

Don't cache custom Front Page domain

I'm working on a module that shows a different frontpage per role. I have three frontpages: the base www.domain.nl for anonymous users, set in the basic site settings for users with role_1 they go to ...
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1answer
40 views

Expected \Drupal\User\Interface got Drupal\Core\Entity\EntityInterface [closed]

I am trying to load a user and pass it a UserEvent class to simulate an event trigger. $user = \Drupal::entityTypeManager()->getStorage('user')->load($id); However, the Class only accepts ...
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1answer
75 views

Looking for a way to trigger an event for testing custom event subscriber

I am looking for ways to trigger an event in my local dev to check out a custom event subscriber. The actual event is triggered by Google social auth and I don't think it is possible to do that ...
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41 views

Bypassing page cache for Drupal events

I need some session verification code to be run on each request to Drupal. The most obvious solution that I have found was to use the EventSubscriber interface, and the KernelEvents::REQUEST event. ...
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0answers
18 views

Limit entity type/bundle for EventSubscriber inside services.yml?

I've got an EventSubscriber that I'd like to run for only a specific content type. Is there a way to do this from the services.yml file as an argument or something, or do I just need to check for the ...
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1answer
67 views

Run code once on each page load

In the past there were some hooks, such as described here: How to run check on each page load? to execute arbitrary code on each page load. Now this has been replaced with an event based approach. I ...
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1answer
52 views

Is it possible to override/replace an event subscriber

I would like to replace an event subscriber. Is there any way that I can write my class implementing EventSubscriberInterface which would replace another existing event subscriber instead of being ...
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1answer
61 views

Event subscriber to invalidate a cache

I am invalidating a cache tag in KernelEvents::REQUEST event: public static function getSubscribedEvents() { $events[KernelEvents::REQUEST][] = ['onRequest', 100]; return $events; } public ...
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1answer
148 views

How can trusted host patterns be set dynamically?

I'm working on a site which uses the Groups module that will allow users to create groups on the site. The site will then allow for users to point custom domain names at the site, with the content for ...
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1answer
23 views

Forward authenticated user to user.page on /login uri

If an authenticated user navigates to /login on a Drupal 8 site, she gets the "access denied" error. I want the site to redirect that user to /user (route user.page) instead. Unfortunately my ...
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99 views

How can I trigger the EntityTypeEvents::UPDATE event?

I tried to trigger event on each entity update. This is my src/EventSubscriber/MySub.php use Drupal\Core\Entity\EntityTypeEvents; use Symfony\Component\EventDispatcher\...
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1answer
41 views

Alter existing route's output formats?

I want to alter the entity.node.canonical route so that when it is accessed using ?_format=json it will return the rendered node in JSON. So far I have created a RouteSubscriber that alters the route ...
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40 views

How do I redirect a user basing on its roles?

I'm having an issue with writing a redirect based on whether or not the current user's role matches the one listed or not I've been trying to find solutions related to getting the current path for ...
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1answer
80 views

Error with Event Subscriber using getRouteName()

I have a problem with event subscriber. Here is the error: The website encountered an unexpected error. Please try again later. Error: Call to a member function getRouteName() on null in Drupal\...
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0answers
119 views

Return an Ajax Response from EventSubscriber?

I am trying to return an ajax response when a user logs in while the page is loading post-login. /#1 approach was attaching an ajax callback to the user login form submit with form_alter. However ...
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1answer
356 views

How to alter response headers from module hook

I am puzzled how to alter the response headers from specific hook (hook_file_download)? /** * Implements hook_file_download(). */ function example_file_download($uri) { $scheme = FileSystem::...
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2answers
215 views

View all subscribed events?

I have a feature where if a user navigates to a specific url (www.mysite.com/special-content) they are redirected to the login page, where we've appended a destination to the request (www.mysite.com/...
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1answer
48 views

setContainer Error When Registering an EventSubscriber Service

I am trying to create a basic event subscriber, but when I add the services.yml file and attempt to rebuild the cache with drush cr, I get this error. In Drupal.php line 130: \Drupal::$...
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1answer
110 views

Would replacing hooks with events be a good practice?

Do you think it would be a good practice to replace hooks with events? I mean dispatching an event inside a hook to subscribe afterwards. For example if you have 20 hooks in your module, is it ...
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3answers
112 views

How can you remove another modules events?

So, I have an event subscriber for Drupal commerce that listens for "commerce_order.place.post_transition" and will send a bespoke order email (due to not being able to change some of the things like ...
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74 views

Why are KernelEvents not triggered on cached pages? [duplicate]

Why Kernal events not triggering on cached pages.I have tried using priorities.. $events[KernelEvents::REQUEST][] = ['onRequest', 27]; Services.yml file tags: - { name: 'event_subscriber', ...
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2answers
635 views

Can't find cookie for validation in EventSubscriber

There's this module Splash Redirect in which src/EventSubscriber/SplashRedirectEventSubscriber.php is supposed to check if the cookie $config_cookie exists or not, if it already exists then the user ...
1
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1answer
77 views

How to change a field value in a product variation when someone edited the order manually?

I had implemented a "Event Subscriber" controller to change the stock value in the product variation. Stock is a field in product variation. Depending upon the quantity in order items I am ...
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1answer
66 views

Plugins before event subscribers

Not sure if there's a way out of this problem but... I have a custom log module which listens for events that could come from multiple sources. All it does is listen for an event, and if it occurs ...
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0answers
294 views

Subscribe to content type creation event

I'm using Drupal 8 (8.6.2). My main objective is to read fields of newly created content type (or changed, it doesn't matter) and create few helper data structures. To achieve this, I'm trying to ...
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1answer
178 views

Handling access denied result

In Drupal 8, what is the correct way of returning access denied to a user (outside of access requirement on a controller)? I'd say it is to throw an AccessDeniedHttpException most of the time, but I ...
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241 views

Throwing an AccessDeniedHttpException() in an event causes a “max nesting level” error

I am debugging an event subscriber that checks if a user has access based on certain conditions. If they don't have access, then I am doing: throw new AccessDeniedHttpException(); However, this was ...
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1answer
167 views

Class not found for a new module/service I am building. I am not sure how to debug

I am building a new service, an event subscriber in a custom module. My class which extends EventSubscriberInterface is not being found. [error] Class Drupal\fivewire_commerce\EventSubscriber\...
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3answers
173 views

How are hooks implemented?

Are hooks a thing in their own right, or are they actually implemented as events under the hood?
2
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1answer
58 views

Hook or event before a page gets cached

Is there a hook or event I can tie into before a page gets cached. I need a hook/event that I can call so that I can run some logic on the page that is about to be cached to tell Drupal if I want a ...
0
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2answers
191 views

Which events are invoked when an order is removed or cancelled?

I have already an event subscriber class with commerce_order.place.post_transition defined. I need to remove nodes when an order is deleted or canceled. What event could I use in that case?
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1answer
363 views

Dispatch an Event when the a user logs

I was looking into the new Events system for Drupal 8 and there's something I haven't been able to figure out. I need to dispatch an event when a user logs something to the watchdog table using the ...
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1answer
30 views

How to load a file during the load of drupal 8 bootstrap (hook_init)

I want to make something that in Drupal 7 can easily be done with hook_init, but this hook doesn't exists in Drupal 8. I want to load an .env file and at the same time load the dotenv file from ...
3
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1answer
2k views

EventSubscriber endless redirect

I have Drupal 8.5.1 and I am trying to force a redirect for anonymous users to the CAS login page. First I thought that the issue was related with the firing of the checkAuthStatus function below, ...
2
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1answer
719 views

Run KernelEvents::REQUEST event before hook_node_access?

I'm doing some central static variable setup for the request and was hoping to use KernelEvents::REQUEST to run first and set the variables. However, I've found that while the documentation states: ...
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1answer
493 views

Drupal 8: Class not found from module Controller, but works fine from module EventSubscriber

I created a custom D8 module in: <root>/modules/custom/mymodule In that custom module are src/Controller/MyController.php and src/EventSubscriber/MySubscriber.php. I wrote some custom code ...
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0answers
740 views

How to understand and fix a Reflection does not exist error?

I am trying to get my head around using EventSubscriber for adding HTTP Headers. In D7 I would have simply used drupal_add_http_header('Content-Type', 'application/javascript'); But I see that this ...
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1answer
338 views

Using Event Subscriber change the product custom field value after first checkout of that product

Using 'Event Subscriber', I'm able to get $order and $items from the order after completing the checkout. How can I get the product id from the $itemsand modify the product custom field value? ...
5
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1answer
815 views

Why is it better to use event subscribers rather than hooks

In drupal 8, we now have the ability to use event subscribers. What's the reason for this? Is it to work with the new cache API better? Recently I had a task of needing to extract data from a node ...
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0answers
100 views

How can an event subscriber have access to the entity type?

I'm using entity_print for PDF generation on two node types. I'd like each to have its own orientation configuration (or just have one override the default). There is an event in entity_print where ...
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0answers
202 views

How to fire an Event on node publish on Drupal 8

I am trying to figure out how to fire an event when a node type gets published so I can set up a listener to listen to that event. Can someone explain what is the best practice and how to fire an ...
5
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1answer
2k views

Custom 500 Error page: Is there a way to theme a fatal error?

In /core/includes/errors.inc, when there is a fatal error it outputs a response with the message "The website encountered an unexpected error. Please try again later." and a back-trace, if error_level ...
2
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1answer
483 views

Create an EventSubscriber for a specific module

I'm attempting to make something occur at a specific event in the GatherContent module found here https://www.drupal.org/project/gathercontent Based on the information here http://help.gathercontent....
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1answer
872 views

Must implement interface > Drupal\Core\Entity\EntityTypeManagerInterface, none given in __construct() function

I am trying to write a custom eventsubscriber for commerce 2.x for an event after a successful checkout. Everything works and now I want to create a __construct function to initialize an object, but ...
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2answers
878 views

How to discover events for event dispatcher

I want to write an implementation of EventSubscriberInterface for an event in commerce, there is a handy example, but How do I find out what events are available (as a whole for my site) and/or How ...
0
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1answer
453 views

How to use a terminate kernel event to log page access statistics?

In Drupal 7 hook_exit is implemented in the Statistics module to gather statistics for page accesses. This change record suggest the equivalent in Drupal 8 is to listen for kernel.terminate events. ...
1
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1answer
747 views

EventSubscriber called on specific node type or path

I'm trying to set an event that will launch function that loads some data from outside server and print it to javascript div element. I tried many ways but I can't figure out how to make this event be ...
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2answers
535 views

When an anonymous user hits '/user/login' route, how can I trigger an event?

I want to trigger an event when an anonymous user comes to /user/login. I made an event subscriber, but it only fires one time: namespace Drupal\mymodule\EventSubscriber; use Symfony\Component\...