Questions tagged [8]
Version tag to tag issues specifically related to Drupal 8.x. Please note that version tags should be used only for questions that apply to a version only, not to merely say what version a site is using.
1,570
questions
34
votes
9answers
52k views
How can I programmatically display a block?
I'm developing a site using Drupal 8 beta-14. I've created a view block of different terms and now I want to display it using code. How can I display it programatically?
I used to do it in Drupal 7 ...
27
votes
3answers
59k views
How do I get the raw field value in a twig template?
myfield is a plain text field. {{ content.field_myfield }} renders the field with HTML markup and the field label.
How do I render the raw value of the field? {{ content.field_myfield.value }} doesn'...
42
votes
13answers
29k views
How do I remove a configuration object from the active configuration?
I'm writing a custom module for Drupal 8. It defines a field storage configuration object, in a file called modules/mymod/config/install/field.storage.bloom_stem.bs_twitter_ac.yml.
The problem is ...
14
votes
3answers
18k views
How can I implement AJAX form submission?
My task is to submit contact form via AJAX and then to show "Thank you for submission!" message, loaded in place where the form was. So I need to ajaxify existing contact form.
I found some examples ...
30
votes
6answers
51k views
How to get the valid URL of a Link field from within a Twig template?
I have a Link field named field_my_link (machine name).
Within a Twig template I can get the link's URL value with this:
{{ node.field_my_link.uri }}
If inside the Link's URL there is an external ...
28
votes
3answers
40k views
Programatically render a block in a twig template
I need to render a views block in my page.html.twig template. In D7 I would do this:
<?php
$block = module_invoke('module_name', 'block_view', 'block_delta');
print render($block['content']);
?...
19
votes
4answers
41k views
Add a custom submission handler to a form
How can I add a custom form submission handler?
I tried adding $form['#submit'][] = 'mymodule_form_submit'; or $form['actions']['submit']['#submit'][] = 'mymodule_form_submit'; to hook_form_alter().
...
7
votes
2answers
4k views
Change a normal submit 'input' type to 'button' type with button tag
Is it possible in Drupal 8 to change a regular form submit button from Drupal into a button tag?
This is the output I need to achieve:
<button type="button" class="search-box__button">
<...
13
votes
7answers
25k views
User login REST format
Do anyone have a working REST Login on Drupal 8?
This is what I tried.
POST /user/login HTTP/1.1
Host: 8.d8.local
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: http://nikhilmohan....
11
votes
6answers
9k 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 ...
22
votes
5answers
38k views
Get Image URL in Twig
I want to render an image as a background image via an inline style in twig.
I created a field called bg_image and attached it to the standard plain page.
After fiddling around for hours I was able ...
40
votes
10answers
46k views
Manually disable a module
In Drupal 7, I could manually edit the {system} table in the database to disable a stubbon module. In my Drupal 8 site, this table is gone.
How can I manually disable a module in Drupal 8?
11
votes
6answers
12k views
How do I programmatically place a block?
From UI you can add a block in a region in that way:
Go to Admin -> Structure -> Block layout (/admin/structure/block).
Click on "Place block" button besides the region name.
I want to do the ...
19
votes
9answers
44k views
Create template file for views block
There is a lot about theming custom blocks, but what about blocks created by views?
My views block has id: block-views-posts-listing-block,
I try many ways for naming template file, ex: block--block-...
10
votes
1answer
6k views
drush/drush dev-master requires codegyre/robo ~1.0.0-beta1
I'm transitioning a Drupal 6 site to Drupal 8.1 so following the official instructions, I set up a new install in its own directory. Since this is only one site, I followed the instructions to put my ...
50
votes
7answers
34k views
How can I import the configuration on a different site?
I have this error when I try to import the config of an another site:
The staged configuration cannot be imported, because it originates
from a different site than this site. You can only ...
63
votes
9answers
130k views
How do I access a field value for an entity (e.g. node) object?
node_load((int) $nid) loads a fully-populated node entity. $node->title->value gets the title, but how do I access field values in Drupal 8?
56
votes
8answers
95k views
How do I get the current path alias or path?
How can I get the current alias and/or path in Drupal 8?
In Drupal 7 I did this with drupal_get_path_alias(). What is the equivalent code I should use in Drupal 8?
34
votes
7answers
44k views
Programmatically create nodes
How can I programmatically create nodes with date and image fields?
I know I can do it in Drupal 7 with the following code.
global $user;
$node = new stdClass();
$node->title = "YOUR TITLE";
...
26
votes
9answers
53k views
How do I create a link?
Say I am extending The blockBase class to create a custom block, and I am implementing the blockBuild method to create some markup for my block. Something like this:
class YourModuleBlock extends ...
29
votes
11answers
35k views
How do I set the page title?
I know I could change the page title with drupal_set_title(t('Amy page title')), but when I try it in Drupal 8 I get the There is no such function error.
How can I change page title in Drupal 8?
21
votes
7answers
58k views
How do I clear cache using an SQL query?
After a module update, my site has become unusable, and only shows a php error message.
I tried circumventing the problem with drush cc, but that didn't help.
Also tried with a custom php script but ...
15
votes
2answers
6k views
How to create a empty module? [closed]
What is the most basic valid module one can create in Drupal?
It would be useful to have a simple blueprint available, for anyone just getting started with Drupal.
14
votes
3answers
12k views
How do I alter the route defined by another module?
In other words, what is the Drupl 8 equivalent of hook_menu_alter()?
Drupal 8 still uses hook_menu(), but for what I can see, the information returned by the hook is different from what the hook ...
6
votes
6answers
11k views
How to print paragraphs in twig template
I have a content type, basic, where i have added a Paragraph field (field_pr) that has two fields: field_text, field_color. I have a twig template node--basic--full.html.twig where i want to print the ...
2
votes
2answers
6k views
AJAX callback on form item generated by AJAX
I'm trying to add AJAX callback to form element that was previously rendered by AJAX but with no luck. Code below.
A bit of description. There are three main methods here:
buildForm - base form
...
20
votes
1answer
4k views
How can I change the active theme programmatically?
How can I change the active Drupal 8 theme programmatically?
In Drupal 6, we used the following code.
global $custom_theme;
$custom_theme = 'garland';
In Drupal 7, we used hook_custom_theme().
In ...
42
votes
15answers
72k views
Getting the image URL from a field_image on a node
So I have this Node:
object(Drupal\node\Entity\Node)[1862]
protected 'values' =>
array (size=17)
'vid' =>
array (size=1)
'x-default' => string '7' (length=1)
...
51
votes
4answers
74k views
How do I get the current node ID?
In Drupal 7, if I wanted to get to get the node id of the currently displayed node (e.g. node/145) I could get it with the arg() function. In this case, arg(1) would return 145.
How can I achieve the ...
14
votes
5answers
6k views
What is the correct composer based 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 ...
7
votes
4answers
5k views
Anonymous user cache control
We have written some custom blocks that render dynamic content; unfortunately, the caching defaults cache the first render of this block (and don't refresh for anonymous users). Cache control seems to ...
6
votes
4answers
18k views
Get current language in template
In Drupal 7 the current language is a global variable we can access with
global $language;
$langcode = $language->language;
I want to know how can we access the current language in a Twig file ...
2
votes
2answers
5k views
How to safely render node body on a custom variable?
I created a custom template for my programmatically created block.
I defined a variable for the template called test
so in my render array I have
'#test' => $node->get('body')->value
...
52
votes
2answers
29k views
What are all the directories for in the new Drupal 8 structure?
Drupal 8 re-arranged all the directories and locations of modules/themes etc. Where do things go now?
66
votes
5answers
52k views
What does “The provided host name is not valid for this server” mean?
I am running a Drupal 8 website, and when I browse to any page, I get a plain white page with just the following error message on it.
The provided host name is not valid for this server.
What does ...
22
votes
3answers
48k views
Get path to theme assets in Twig template
I have a question about getting a path to an image in a Twig template. The image is not assigned to a field or something. Just a static image which is stored in "MYTHEME/image/icon/my-icon.png".
In ...
16
votes
7answers
44k views
How to get $_POST and $_GET parameters
I ajaxly call a route and pass data to it, In my controller, I want to get $_POST['var'] , $_POST['var2'], it seems because of using HttpFoundation in drupal 8, $_POST and $_GET are not exists in old ...
9
votes
1answer
13k views
Send a form to twig template
How I can pass a form to twig template in Drupal 8?
For example, I get this:
a form: mymodule/src/Form/MyForm.php
Then on my Controller:
public function myController() {
??????
return [
...
8
votes
1answer
15k views
How can you render fields from an entity reference in node templates? [Drupal 8]
For context, I'm dealing with two content types: article and team_profile. In article nodes, we have an entity reference field pulling a team_profile node in to serve as the author information.
I ...
14
votes
5answers
17k views
How can I prevent a particular page being cached?
I have activated the cache on my Drupal 8 site, and of course all pages are cached as expected.
However, I'd like to have a specific page bypass that cache.
In my controller I built the page as ...
13
votes
17answers
18k views
Redirect after user login
I would like to redirect users after they log in. Is it possible to use hook_user_login() to make the redirection? How do I add the parameter for the redirection?
3
votes
3answers
7k views
Implementing CKeditor's plugin
I need to add the Templates plugin into Drupal8 CKeditor. So far it is available on the editor configuration page, but not on a node edit page. The code:
namespace Drupal\module_name\Plugin\...
8
votes
3answers
2k views
Slashes in single route parameter or other ways to handle a menu tail with dynamic number of params
According to the Symfony documentation, a route defined as below should trigger the specified controller for both /hello/bob and /hello/bob/bobby:
_hello:
path: /hello/{names}
defaults: { ...
4
votes
2answers
2k views
Search results only for the current language
I have a site with 4 languages and am using the builtin search to look for content on the site. How is it possible to restrict the search results only to the currently selected language?
I tried ...
3
votes
3answers
6k views
What is easiest way to debug variables in nodes, views, blocks and page twig templates?
What is easiest way to debug variables in nodes,views,blocks and page template.
Earlier we used devel module in drupal 7 ,by using dpm() function it shows very neat and clean structure ,it was so ...
6
votes
8answers
12k views
How do I store the values submitted in a form in the session?
I want to submit a form and store the submitted values in the session. In Drupal 7 I just used $_SESSION['key'] = $value; but how do I correctly implement this in Drupal 8?
6
votes
7answers
8k views
How to replace the search submit button with a Font Awesome character?
I would like to replace the search submit button with a Font Awesome character like the Magnifier (Search Icon) character, and put Search the site inside the search box.
How can I achieve something ...
14
votes
10answers
34k views
Get taxonomy terms
I wanted to retrieve taxonomy terms from a certain vocabulary in Drupal 8.
Apparently I can still do it using taxonomy_get_tree but it's deprecated.
I now have to use TermStorageInterface::loadTree
...
2
votes
2answers
1k views
How to render specific form elements from the *.theme file
I am using Drupal 8 and would like to customize how form elements are being displayed. Specifically, I don't like how uneditable, populated textfields are displayed as plain text. I would have it ...
11
votes
4answers
9k views
How to configure an exposed filter in a view using a date picker?
How can I configure an exposed filter so that users can filter my site content by creation date, preferably using a date picker?
I tried using Content: Authored on as filter, but it gets me a text ...
