Questions tagged [8]
Version tags should be used for questions that apply to a version only, not to merely say what version a site is using.
15,791
questions
18
votes
5
answers
40k
views
Check if it's the front page in the template
Im trying to show content when I'm on the front page of my Drupal 8 test website, but the content shows on every page:
{% if front_page %}
<header role="banner">
{% if logo %}
<a ...
- 583
18
votes
5
answers
17k
views
Get the list of all content types
How do I get a list of all the content types defined in a Drupal 8 site?
In Drupal 7 it used to be node_type_get_types(), but it has been deprecated.
I tried Entity::loadMultiple() but it doesn't ...
- 1,816
18
votes
3
answers
41k
views
How can I render plain text as HTML in a template?
I've run into a wall trying to render a SVG image markup code into html from a plain text field.
I'm looking to render the SVG code from a plain text field without overriding the plain text field ...
- 835
18
votes
5
answers
7k
views
Order of drush commands for automated deployment?
What order should the following drush commands be ran?
config-import
updatedb
entity-updates
Also, I see entity-updates fail a lot due to field_delete_data* tables existing. How can I delete them as ...
- 363
18
votes
4
answers
14k
views
Redirect Anonymous user to login page
I want if user not logged in and visit any page of my website except my REST VIEWS routers I redirect him/her to login page in drupal 8, I found this solutions for drupal 7 but didn't find any ...
- 771
18
votes
2
answers
22k
views
How can I upload files with the form element type file?
I want to upload a file and I have to use form element type as 'file'. In submit function I am not able to get any proper data related to the file which I am uploading. SO Can anyone please help me to ...
- 884
18
votes
8
answers
22k
views
How do you implement a breadcrumb?
I've tried to define a new breadcrumb override, but I'm still getting the site default.
I've created a custom module, foo_breadcrumb:
- modules/custom/foo_breadcrumb
- foo_breadcrumb.info....
- 707
18
votes
8
answers
13k
views
How can I make kint() load faster when debugging twig templates?
I've seen quite a bit of discussion about how kint() from the Devel module is difficult to work with because it maxes out PHP memory limits and makes the browser drag. I've heard some thoughts on ...
- 752
18
votes
5
answers
18k
views
How can I setup multiple database connections?
Can anyone help me to setup connection with multiple databases connection in Drupal 8? I have database on the same server and I want to access it along with default Drupal 8 database.
- 1,089
18
votes
6
answers
31k
views
How do I add a CSS class to a form label?
I want to add a CSS class to a label on a page that is using Drupal 8 Form API. I have been unable to find a reference online on how to apply that.
I have used the following workaround, but it ...
- 181
18
votes
2
answers
14k
views
How to get the human readable content type name in a node template
I have created node template for my node, and its working fine.
I need to print content type name, which is like "Whitepaper" and has machine name "w1" in my node template. If I use variable {{ node....
- 731
18
votes
4
answers
31k
views
Get the value of a custom user field
I have a custom form that needs to display a default value from a custom user field. The field was created under /admin/config/people/accounts/fields and its machine name is field_r_period_length_sec.
...
- 793
18
votes
3
answers
32k
views
How do I show the current node title in page.html.twig OR in node.html.twig?
If I want to show the current node title in page.html.twig (by default it seems to only be available in node.html.twig) I have to create a preprocess function like so:
function theme_preprocess_page(&...
- 832
18
votes
5
answers
18k
views
What is the correct way to set cache contexts on custom blocks?
I have run into an issue where a block that should be unique per page isn't for logged-out users. The issue is a custom block plugin I have on a views search page that contains custom filters (sort ...
- 14.1k
17
votes
8
answers
22k
views
Unable to install ... already exist in active configuration
On Drupal 8.1 I keep running in those kind of messages when I try to activate a custom module or a custom feature that makes some modification to the basic page. (add fields).
It is really annoying...
...
- 1,102
17
votes
3
answers
37k
views
How to get formatted date string from a DateTimeItem object
I have a standard Drupal date field 'My date' (field_my_date). I can get its value:
$node->field_my_date->value // returns: "2017-12-14T08:00:00"
But I want to get a formatted date string, ...
- 541
17
votes
6
answers
19k
views
How to embed drupal content in other sites (remove X-Frame-Options: SAMEORIGIN)?
I tried to make a iframe with a drupal page but I received the following message:
Multiple "Refused to display (page adress) in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'."
Then, I ...
- 325
17
votes
5
answers
20k
views
How can I re-install a module?
I am creating on Drupal 8 module. I have used a custom table to store the data collected from forms.
Somehow during installation, tables are not created due to an issue in the install file. Now I have ...
- 3,956
17
votes
2
answers
44k
views
How to create a redirection programmatically? [closed]
I try to create a redirection 301 with the redirect module. For example, I want to redirect an URL source to an internal URL through my custom module.
I want to create a redirection when I create a ...
- 193
17
votes
10
answers
28k
views
Add class to content field (link)
I want to add a class to the <a> tag of a field that consists of a link and text. (It's a field of type Link.) The name of the field is content.field_c_button_link.
In the template file, I ...
- 271
17
votes
2
answers
10k
views
How to load an entity using the uuid?
I have created a custom resource which extends the EntityResource class. This way I can use all build in functionality that Drupal core provides on the default entity resource, but I can still add ...
- 2,021
17
votes
1
answer
15k
views
How do I translate a view page title?
Is there a way to translate a view page title in Drupal 8? How can I achieve it, if it is possible?
- 864
17
votes
3
answers
9k
views
KernelEvents::REQUEST is not fired on cached pages
I need to implement an event subscriber to perform some actions when the page is loaded. The event should be fired whether the requested page exists in the Drupal cache or not. It seems that the ...
17
votes
5
answers
27k
views
How do you implement a custom submit handler in hook_form_alter()?
I've been updating one of my Drupal 7 modules to 8 and I'm having an issue with my form alter. I'm adding a validation function and a submit handler. The validation function is getting called just ...
- 181
17
votes
1
answer
16k
views
\Drupal::request() vs $request_stack->getCurrentRequest()
These seem to return the same thing:
\Drupal::request()
$request_stack->getCurrentRequest()
Which is the preferred way to get the current request and why? Is one of these to be deprecated? Any ...
- 495
17
votes
5
answers
7k
views
What is the correct core update workflow?
I want to use composer to manage Drupal 8 dependencies, but I'm not sure what is the right core update workflow.
At the moment I'm using drush to update core to latest beta release, but I also have ...
- 969
17
votes
1
answer
4k
views
What are the equivalent functions that I should use for HTTP handling?
Looking at the functions listed in the HTTP handling page for Drupal 7, I noticed that the following functions don't exist anymore in Drupal 8. (The links are for the Drupal 7 documentation pages, ...
- 97k
17
votes
1
answer
2k
views
What is the difference between "Language: Not specified" & "Language: Not applicable"?
What is the difference between Language: Not specified and Language: Not applicable?
There was no such distinction before Drupal 8.
I haven't found any documentation about this. It would be nice to ...
17
votes
3
answers
1k
views
How to install a module which includes a different version of Symfony?
I am a developer and maintainer for the CiviCRM project. We've been trying to make a Drupal 8 version CiviCRM, and have a come a long way. We're beating our heads against our collective keyboards ...
- 749
16
votes
5
answers
37k
views
How can I programmatically render a node's field respecting the view mode settings?
I want to render a node's field inside a block. It works like this:
<?php
if ($node) {
if (isset($node->field_body_secondary) && $field = $node->field_body_secondary->value) {
...
- 2,493
16
votes
7
answers
42k
views
Rendering an image field in page.html.twig with a custom image style
I'm trying to set up a slideshow that's unique to each page. The code for this needs to be in page.html.twig. I've got the slideshow mostly working, but I can only call the full image URL, not a ...
- 387
16
votes
8
answers
12k
views
Get the list of available services
Is there a way to get the list of the available services in Drupal 8?
- 387
16
votes
3
answers
48k
views
How to load paragraph entity on node object?
I'm using paragraphs in my content type. I've created a paragraph type and added content. Now I want to load the paragraphs in a foreach. But nothing's showing up. $paras is empty:
$node = \Drupal\...
- 966
16
votes
3
answers
27k
views
How do I get a module path?
I'm creating a module in Drupal 8 and I need to define a relative path to mymodule to pass it on a JavaScript file like this.
$scope.getPlatformIcon = function (_platform) {
var modulePath = "/...
- 163
16
votes
4
answers
13k
views
REST GET without caching
Using this tutorial Drupal Console's drupal gprr command, I've created a custom REST resource in Drupal 8. I'm able to use this resource to retrieve a simple JSON object that says hello to the current ...
- 3,635
16
votes
5
answers
25k
views
How do I disable Twig and block cache for a specific module?
I'm working on a module in Drupal 8 which retrieves time sensitive data from an external REST api. The data is processed and forwarded to a Block. The final data is sent to a Twig template like so:
.....
- 415
16
votes
3
answers
15k
views
How to make custom fieldset collapsed by default in Drupal 8
In Drupal 7 there was option to have fieldset collapsible or not, and to restrict default state of this form element (collapsed, or uncollapsed). Example:
$form['contact_data'] = array(
'#...
- 632
16
votes
5
answers
22k
views
How can I get the page title?
drupal_get_title() has been removed from Drupal 8. How I can get the page title in Drupal 8?
- 163
16
votes
3
answers
17k
views
How can I add items to the Admin Toolbar?
In Drupal 8, I want to add a menu item to the Admin Toolbar with a submenu, with different links.
How can I do it?
- 952
16
votes
2
answers
27k
views
How do I create table in custom module
In Drupal 7 we used to use hook_schema() in the .install file to create a table. I believe that, in Drupal 8, you can do that as well, but I was under the impression that you should create .yml files ...
- 3,447
16
votes
1
answer
10k
views
How do clean_class and clean_id work?
I am new to Drupal 8 and Twig syntax. I am not able to understand how the clean_class filter works in region|clean_class. What is clean_class? I have added the following code in the page.html.twig ...
- 706
16
votes
1
answer
7k
views
How do I use dependency injection on \Drupal::moduleHandler() to a Controller?
I am using the following line in a controller class.
\Drupal::moduleHandler()->alter('mymodule_myfunction', $plugin_items);
Pareview.sh is giving me this error message.
\Drupal calls ...
- 1,355
16
votes
2
answers
8k
views
"Drupal calls should be avoided in classes, use dependency injection instead"
In my module using below code for getting url alias of given url:
$alias = \Drupal::service('path.alias_manager')->getPathByAlias($_POST['url']);
But one I run Automated Review(http://pareview.sh/...
- 1,822
16
votes
1
answer
6k
views
How to make a theme hook suggestion for blocks according to region?
Since Drupal 8 it is not possible with template naming conventions to load a specific block template according to the region it is placed in ("Per-region block markup and per-region block templating ...
- 688
16
votes
3
answers
11k
views
What is the purpose of drush entity-updates?
After updating Drupal 8 modules, I have been warned on the Drupal 8 status page that:
Entity/field definitions: The following changes were detected in the
entity type and field definitions.
...
- 707
16
votes
0
answers
11k
views
How do I perform a redirect to a custom URL after login? [duplicate]
I am trying to redirect users to a custom URL after they logged in, but my code doesn't work.
How do I redirect users after they logged in?
- 305
15
votes
1
answer
8k
views
How to remove mymodule configurations on uninstall [duplicate]
I have created a custom module and created a yml file to create a menu
system.menu.custom_menu.yml
id: custom_menu
label: 'Custom menu'
description: 'Custom menu.'
langcode: en
locked: true
...
- 2,835
15
votes
4
answers
14k
views
Retrieve translated taxonomy term in current language programatically
How do I retrieve a specified taxonomy term translated (if translation exists for this term) from the current language context programmatically with D8?
- 704
15
votes
1
answer
7k
views
How do I get Views content items in "my language" but fall back to "default" if the content isn't translated?
This is probably very easy but endless searching has proved fruitless - there's lots of UI changes between the D7 and D8 versions of these modules it seems.
What I want to do is create a blog in two ...
- 1,013
15
votes
1
answer
8k
views
How to get an array of referenced entity ids from an entity reference field
I have a entity_reference field with BaseFieldDefinition::CARDINALITY_UNLIMITED cardinality. I want a list of referenced entity ids.
I know that I can get all the referenced entities by calling $x->...
- 2,556