Questions tagged [8]

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30
votes
9answers
46k 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 ...
25
votes
3answers
50k 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'...
41
votes
13answers
27k 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
17k 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 ...
28
votes
3answers
37k 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']); ?...
28
votes
5answers
45k 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 ...
18
votes
3answers
35k 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(). ...
13
votes
7answers
23k 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....
22
votes
5answers
35k 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 ...
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-...
5
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"> <...
8
votes
5answers
8k 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 ...
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 ...
11
votes
6answers
11k 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 ...
26
votes
9answers
49k 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 ...
27
votes
10answers
31k 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
56k 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
11k 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 ...
5
votes
6answers
8k 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 ...
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 ...
19
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 ...
61
votes
8answers
119k 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?
42
votes
15answers
65k 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) ...
34
votes
7answers
41k 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"; ...
14
votes
5answers
5k 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 ...
2
votes
1answer
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 ...
4
votes
2answers
16k 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
2k views

How to force a redirect (override the destination query string in the URL)

I have a custom form submit callback to redirect users to a specific page: function MYMODULE_authfrontpageredirect_callback(array &$form, FormStateInterface &$form_state) { $url = \Drupal::...
47
votes
6answers
31k 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 ...
53
votes
8answers
85k 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?
49
votes
4answers
66k 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 ...
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?
39
votes
9answers
42k 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?
9
votes
1answer
12k 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
14k 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 ...
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\...
7
votes
4answers
4k 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 ...
7
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: { ...
3
votes
3answers
4k 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
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 ...
2
votes
2answers
4k 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 ...
11
votes
4answers
8k 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 ...
8
votes
2answers
4k views

Problem with event subscriber - KernelEvents::REQUEST is not fired on cached pages

I am trying to implement a KernelEvents::REQUEST event subscriber to perform some action on page load. I need this event to fire regardless of whether the requested page exists in the Drupal cache - ...
6
votes
2answers
7k views

Add content type field programmatically

My module provides a configuration form which allows to select a content type and on submit 2 new fields will be added to the selected content types. I want to add these fields to the content types ...
1
vote
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 ...
6
votes
2answers
8k views

Adding a class to “body”

I'm trying to add a custom CSS class to the <body> tag, How can I modify or pre-process the <body> tag to add the class body, Is it right to style the <body> tag with css file?
63
votes
5answers
47k 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 ...
16
votes
7answers
7k views

Exclude configuration from import/export

I thought this was a simple use case of the new Configuration management system, but I haven't had any luck finding out how to solve this: Problem I want to store configuration in git and use drush ...
13
votes
6answers
13k views

How to embed a view in a specific node?

I try to embed a view in a specific node. I found tutorials for doing this with Drupal 7 and PHP-Templates: <?php print views_embed_view('view_name'); ?> But I look for a way in Drupal 8 with ...