Drupal 8 Preprocess

module \template_preprocess_block(); 8. That is, if I want to create a preprocess_node or template_preprocess_node function, what is the name of the file that those custom Drupal 8 preprocess functions go in? In Drupal 8 your preprocess functions go in a file in your custom theme directory that should be named to end with the. Contributors: Peter Sawczynec, Rachel Whitton. Audiovisuales “A Cuba con cubana”, “La huella de América en el corazón de Euskadi” y “Alas de historia”. function template_preprocess_form_element. twig template for the list of variables. How do I use a preprocess function for a node template? to preprocess my variable array in drupal 8, But it's not working well. What did I do? I set a breakpoint in the twig template using this methodology and then looked back through to see what preprocess functions were being called by the theme. They provide the HTML markup, CSS, typography, images, and interactive experience that people encounter when they view your site. Drupal Hook Preprocess Views View Fields Transcript. The Menu Item Extras module has been used in Drupal 8 for a while to implement mega menus via additional fields. I am trying create module, which check every nodes (type "article") and replace some string. Related topics. No starterkits for less and sass; Theme settings page broken after upgrading the theme (Pre)process functions for nested hook suggestions are not invoked reliably. theme() has been a popular function used by Drupal developers since Drupal 4. It is important to understand how the Drupal 8 configuration ecosystem works, and how to manage configuration from both a module and whole site perspective. However, the preprocess implementations from modules run first, and those by themes run only last. The Field Layout and Layout Discovery modules will allow you to assign a layout to specific content types. Theme functions …are being converted to templates… (and other formats). theme [prism field=attached_code_post language=php] Be sure to. Preprocess functions can be implemented in both modules and themes. There are a handful of tutorials out there that explain how to implement responsive images in Drupal 8, but none seem to address how to do so using srcset over the element. Funktion template_preprocess_system_modules_details. Web Experience Toolkit: Drupal WxT. This post was originally published on May 22, 2013 and last updated March 8, 2018 thanks to some helpful input by Steve Elkins. Drupal 8 Twig template override Views field template. We only skimmed the surface of what the module can really do. Preprocess theme variables for a specific theme hook. How to programmatically update a field's value in Drupal 8. In this post, you will learn how to theme Drupal 8 views by overriding default views templates and use our own markup to build an accordion (based on bootstrap 3 accordion). But note that the current version is not yet fully compatible with Drupal 8. template_preprocess_forums(&$variables) Prepares variables for forums templates. As you say, DS is a must have. Text files are specified to have LF line endings. Customising a form in Drupal 8 is drastically different from Drupal 7. If not, you should start with Creating custom modules or Theming. Gone are the days of writing Drupal code in Notepad++ or some basic text editor, and say hello to. Ask Question I think it is still a viable solution on drupal 8: function mytheme_preprocess_node. Theme folder new structure. [Drupal] How to implement hook_preprocess_HOOK() function in your custom module? | Zyxware Technologies. Our Drupal team loves to take the best of them from our arsenal, combine them when needed, to achieve amazing results for our customers. But not very wel…. I created a "Table of contents" view mode for paragraphs and one for nodes. x core/modules/block/block. All of the dynamic content available to theme developers within a Twig template file is exposed through a preprocess function. Use preprocess functions to create variables to send to the theme, rather than calling functions in the theme Drupal 8 Developer. Drupal 8 does this by storing metadata about the cached item. Preprocess functions allow Drupal themes to manipulate the variables that are used in Twig template files by using PHP functions to preprocess data before it is exposed to each template. I created a “Table of contents” view mode for paragraphs and one for nodes. Drupal 8 Theming Fundamentals, Part 2; A Tale of Two Base Themes in Drupal 8 core; In this series of posts we’re going to dig into some of the fundamentals of Drupal 8 theming. print nid in drupal 8 twig file or template file add this code in _preprocess_page in. For drupal 8, this theme can be used to build your strong grid-layout Blogging website. Prerequisites for this course. One of the great things about the taxonomy terms in Drupal has always been their hierarchical readiness. Parameter. In this post, you will learn how to theme Drupal 8 views by overriding default views templates and use our own markup to build an accordion (based on bootstrap 3 accordion). This guide will help you deploy Drupal 8 on App Engine Flexible. If not, you should start with Creating custom modules or Theming. net/node/41. theme file, add the following lines. Getting Started with React in Drupal 8 By Ivan Zugec / Drupal / November 4, 2019 November 4, 2019 / 7 Comments If you’ve done any web development in the last couple of years, then I’m sure you noticed that JavaScript libraries and frameworks have become popular. Drupal 8 introduces a concept of asset libraries for JS and CSS in themes and modules. Drupal 8 Developer Tata. Preprocess functions can be implemented in both modules and themes. Parameters. thrive in a fast-paced, collaborative team environment where our employees are our customers 2. The default is located inside "/core/modules. You may be wondering what the "Drupal 8 developer exam" is? It is a certification exam whose official title is "Acquia certified developer - Drupal 8. Manage verbose debugging options and system performance settings per environment on Pantheon using our service configuration files and Drupal 8's configuration override system. Clean and professional, Vanessa is a one-page landing page theme for Drupal 8. twig template for the list of variables. Preprocess blocks using hook_preprocess_block. 8:00 pm Breves Estaciones (RTX)(Obra del Realizador Fidel Oliva Bolívar. I want to do this only with TWIG, without creating a custom module. Text files are specified to have LF line endings. Drupal 7 is a haus at combining CSS & JS files. Preprocess theme variables for a specific theme hook. The main reason for the process layer was to flatten strings into HTML. hook_preprocess and hook_preprocess_hook functions in Drupal 8 - Duration: 8:43. https://ericjenkins. 20131209-prod/sites/www. This would override the way date is displayed in the node. Customising a form in Drupal 8 is drastically different from Drupal 7. A docblock is a specially formatted block of information that goes at the top of every file, class, and function. Drupal 7 Preprocess Tricks: Tips From a Themer. Render arrays. Preprocess functions allow Drupal themes to manipulate the variables that are used in Twig template files by using PHP functions to preprocess data before it is exposed to each template. Before setting up Drupal 8 on App Engine Flexible, you will need to complete the following: Create a Google Cloud Platform project. One of those major improvements is to the library management system, which controls the attaching of CSS and JavaScript files. Drupal 8 - template_preprocess_form_element. When replying, and the comment has a link field, this field can also be pre-filled, see the 'Sending' section. Currently if I put a. Clean and professional, Vanessa is a one-page landing page theme for Drupal 8. During this course, you'll develop themes step-by-step, while following best practices to ensure maintainability and interoperability with Drupal module. class \Drupal\bootstrap\Plugin\PluginBase extends \Drupal\Core\Plugin\PluginBase. The form submit button. Web Experience Toolkit: Drupal WxT. From what I understand, the proper place to put code to alter a form is in hook_form_alter. Best practices for Drupal 8 theming; Steps for upgrading a theme to Drupal 8; Review and wrap-up; Who will gain the most from this course? This course is ideal for designers and developers who have an HTML/CSS background and want to get into Drupal theming and who are responsible for developing or maintaining a custom Drupal theme. How to programmatically update a field's value in Drupal 8. This is the file where all of the preprocess functions is stored. Hello, If you use a preprocess function say theme_preprocess_node And add a custom variable to the content that changes based upon URL $_GET variable. The main reason for the process layer was to flatten strings into HTML. theme file, add the following lines. In this post, you will learn how to theme Drupal 8 views by overriding default views templates and use our own markup to build an accordion (based on bootstrap 3 accordion). x core/includes/theme. Today we'll be talking about the very robust hook, called Hook Preprocess Views View Fields. Just like Drupal 7, you can affect the output of certain HTML via preprocess functions. Drupal 8 Theming Fundamentals, Part 2; A Tale of Two Base Themes in Drupal 8 core; In this series of posts we’re going to dig into some of the fundamentals of Drupal 8 theming. TheMAG is a Drupal theme that lets you create a modern magazine website with ease. hook_preprocess and hook_preprocess_hook functions in Drupal 8 - Duration: 8:43. drupal_get_form in Drupal 8 module_exists in Drupal 8 HTML link in Twig menu_tree() in Drupal 8 How to dpm in Drupal 8 How to exclude or remove stylesheets added by core or other modules Current logged in user in Drupal 8 How to check for user access or permission in Drupal 8 How to set active links for menu items How to get the current path in. If not, you should start with Creating custom modules or Theming. SimpleBlog is a fresh, clean, web-based grid-responsive theme of Drupal 8. Using Drupal 8 preprocess views view field was a bit tricky so I set up these snippets that should help In your theme' YOURTHEME. theme file and kint() the vars to see what's going on. For example, if you wanted to drastically alter the HTML of the pages for certain content types, you could do so with overrides like page-content_type. That sounds simple right? Just edit some templates and preprocess functions and you’re done. User warning: mkdir(): Permission Denied in Drupal\Component\PhpStorage\FileStorage->createDirectory() (line 145 of core/lib/Drupal/Component/PhpStorage. Libraries are placed under the 'libraries:' heading with each library below it with name, (themename/libraryname). module \template_preprocess_block(); 8. Array $ Variablen: Ein. Preprocess theme variables for a specific theme hook. x core/modules/block/block. Prepares variables for node templates. You could try this method, use conditional comments: Replace the If expression with the one you want. The preprocess layer. That's basically true but, like many things, it can be confusing and frustrating at first when things don't quite behave as expected. Welcome to Part 2 of my Integrating Components with Drupal Series. You may have heard some news about the fact that a new theme has been added to Drupal, named Classy. For example, most of these links I want to change show up in template files as {{ link }}. Dynamic Page Cache in 8 vs. preprocess 0 drush -y config-set system. All of the dynamic content available to theme developers within a Twig template file is exposed through a preprocess function. Easy One-page Startup/App Landing Drupal Theme. The goal is to insert the image from an image field into the body content of a node. Drupal 8 comes with an all-new CKEditor. See the page. Drupal 8 - How do I get the value of a field either in a preprocessor function or a twig template? I want to use the value set in a field as a class in my twig template. Your site's theme is responsible for that oh-so-important first impression of your organization when they visit your Drupal site. 2 Core-Techs Au programme 1. Twig files should include a docblock like any other Drupal file. org URL itself also provides a glimpse of what it looks like to preprocess. Learning to use Drupal 8 events will help you understand more about developing with custom modules, and will prepare you for a future where events will (hopefully) replace hooks. Theming Views in Drupal with Templates and Preprocess Functions Jun 24, 2010 · by Suzanne Dergacheva Often, views require some custom configuration to match a given design or to provide the user with additional information. A docblock is a specially formatted block of information that goes at the top of every file, class, and function. For design reasons I need to print the hero images in. Securing Drupal 8 with NGINX I am trying to secure my new Drupal 8 installation on Nginx, Ubuntu 18. module \template_preprocess_block(); 8. The Drupal. That’s basically true but, like many things, it can be confusing and frustrating at first when things don’t quite behave as expected. Porto is a professional and multipurpose Drupal theme for any business or portfolio website. work with marketing team in the us to manage content on each of these websites 3. performance css. We will begin by identifying a custom theme for our newly installed Drupal 8 site and add bootstrap 3 css and javascript files. If you are following along, in our first part of this series we built the following style guide component. In this video, we are going to take a look at hook_preprocess and hook_preprocess_hook functions in Drupal 8. I can't figure out how to get the value of this field. process y preprocess functions Posted by cmeraz on December 1, 2013 at 7:42pm Buen dia comunidad, tengo ya casi 1 años dedicado a Drupal, y anteriormente habia leido la documentación en el sitio oficial, pero no la comprendía muy bien, ahora despues de tener un poco mas de experiencia en el tema la encuentro fantástica. This video provides an in-depth look and demonstration of the Migrate Module tailored for technical audiences looking to migrate sites into Drupal 8 including: -How to dramatically improve time to. User warning: mkdir(): Permission Denied in Drupal\Component\PhpStorage\FileStorage->createDirectory() (line 145 of core/lib/Drupal/Component/PhpStorage. Drupal 8 on App Engine Flexible Environment Overview. Drupal Hook Preprocess Views View Fields Transcript. I've spend an hour to understand how to render user login form and user register form in Drupal 8 to print them in a custom place. How do I add a variable for a Twig template in my preprocess function? how to get uri of an image field in a views_view_list twig template using drupal 8? 1. Prerequisites A working theme or module. After several days of spinning my wheels, I'm hoping somebody can tell me how to render an image in the drupal 8 theme preprocess file. Want to learn more about Paragraphs? Then check out our online video course called "Build Edge-to-edge Sites using Paragraphs in Drupal 8". However, in Drupal 8. In Drupal 8 we prefer "lazy" rendering things as late as possible, which usually gets called from the template. class \Drupal\bootstrap\Plugin\Preprocess\PreprocessBase implements PreprocessInterface. deploy to test, verify with marketing team and promote to production 4. Drupal 8 features better CSS and JavaScript integration, but it also changes the manner in which they must be added. You may be wondering what the "Drupal 8 developer exam" is? It is a certification exam whose official title is "Acquia certified developer - Drupal 8. Follow these best practices to improve Drupal 8 theming performance, convert Drupal 7 theme calls, & allow more Twig template customization Twig best practices - preprocess functions and templates | Drupal 8 guide on Drupal. The problem is likely that you try to implement a preprocess function based on the same naming pattern as used for template overrides. How do I add a variable for a Twig template in my preprocess function? how to get uri of an image field in a views_view_list twig template using drupal 8? 1. Theming Views in Drupal 8 - Custom Style Plugins. Drush commands are commonly run in the Drupal docroot, the directory where Drupal's files live. But if you're working on multiple sites and each of those sites has one or more remote environments that you connect to via SSH, workflows quickly become complicated. (Similar to how the BlockBase class has the "build" method. Next, I'll add a template_preprocess_region in my sub-theme's. Etes –vous prêts pour Drupal 8 ? 2. There are a handful of tutorials out there that explain how to implement responsive images in Drupal 8, but none seem to address how to do so using srcset over the element. com / ayendesigns. Preprocess functions can be implemented in both modules and themes. Note: For up-to-date, detailed information about using the Classy theme and Drupal 8 theming, take a look at our base theme tutorials in the Drupal 8 Theming Guide. 3 Core-Techs La genèse de Drupal 8 4. Parameter. Here you will find Drupal 8 video tutorials, real-life examples for Drupal modules development, general how-tos and all kinds of goodies for Drupal development. DrupalCon is brought to you by the Drupal Association with support from an amazing team of volunteers. Drupal 8 brings a revamped mobile-editing experience, in-place content creation to fully engage and utilize the power of content for mobile applications and websites, it has brought granular tagging in the picture. preprocess 0. Drupal 8 FAQ: What is the correct name for a custom drupal theme file? That is, if I want to create a `preprocess_node` or `template_preprocess_node` function, what is the name of the file that those custom Drupal 8 preprocess functions go in?. About the exam. x core/modules/views/views. In this second part, we are going to take the necessary steps to prep Drupal to build the back-end functionality of our Card component. Since the views listing page is containing the nodes but is not a node page so template_preprocess_node() is not working there. This weeks tutorial will dive into how you can add page templates for a specific content type in Drupal 8. Creative design by sixeleven. array $variables: An array containing. Custom twig Attributes in Drupal 8 - Duration: 10:11. In our earlier article, we had a solid understanding of Drupal 8 theming. 4 Core-Techs Drupal et le reste du monde 5. 8 million new conflict displacements were recorded in 42 countries and 17. theme() has been a popular function used by Drupal developers since Drupal 4. Prepares variables for the page template. module \template_preprocess_block(); 8. I am trying to build a Contractive Auto Encoder using Tensorflow 2. So here are the ways to preprocess blocks within your theme. A docblock is a specially formatted block of information that goes at the top of every file, class, and function. Currently if I put a. module \template_preprocess_block(); 8. Prerequisites for this course. In this article we are going to look at how we can create and use pseudo-fields in Drupal 8. More about Twig. This is all we need to create a new theme. inc \template_preprocess_html(); 8. Drush commands are commonly run in the Drupal docroot, the directory where Drupal's files live. In Drupal 8 scripts and css are not defined in the info file but in library. Drupal 8 and preprocess node. Topics covered include. Default template: forums. Theming Views in Drupal 8 – Custom Style Plugins. inc \template. No starterkits for less and sass; Theme settings page broken after upgrading the theme (Pre)process functions for nested hook suggestions are not invoked reliably. The preprocess layer. Theming Views in Drupal with Templates and Preprocess Functions Jun 24, 2010 · by Suzanne Dergacheva Often, views require some custom configuration to match a given design or to provide the user with additional information. So I created a function mytheme_alpha_form_alter() and put it in template. The Drupal. Drupal 8 - template_preprocess_views_view_rss. Hide Custom block if there is no block content Drupal 8 Posted on January 16, 2018 by nit3ch I had a situation when my custom block doesn't have content and I don't want to display the block at all, but rest of the block markup will be there in the DOM. Next, I'll add a template_preprocess_region in my sub-theme's. The model's loss function uses the encoder output in its calculations. But not very wel…. That sounds simple right? Just edit some templates and preprocess functions and you're done. | Pal up with drupal. This allows you to override templates by adding them to your theme and giving them specific names. Major Improvement in Drupal 8 1. That is, until now. However, It is still an html page so template_preprocess_html() works there. I recently worked on a Drupal 8 project which involved a lot of theming of form elements. Right now, Devel for Drupal 8 is available as a dev release; using drush we can download and enable it using these commands. Porto is a professional and multipurpose Drupal theme for any business or portfolio website. That is, until now. This series is a collection of all of our Drupal 8 Theming. However, It is still an html page so template_preprocess_html() works there. You can create a new date/time format by navigating to Admin -> Configuration -> Regional and Language -> Date and Time format and click on 'Add Format'. This usually meant going in the theme and preprocessing what you needed. array $variables: An array containing. Drupal loads templates based on certain naming conventions. Подножки с регулировкой угла наклона для Action 3NG | Sims 2 | Sims 2. One of the nice things about theming in Drupal is the ease of overriding items when theming. Using preprocess hook on specific node type in Drupal 8. by Danny Englander | 8 / Jun / 2013 Druplicon: "What preprocess tricks will I think of next?" In the course of a day as a Drupal Themer, I need to code a wide variety of functionality into a given site I'm working on. I want to get a field value from a content type that I can use in my html--front. inc 関数comment_cron 関数comment_entity_extra_field_info 関数comment_entity_insert 関数comment_entity_predelete 関数comment_entity. template_preprocess_html(&$variables) Bereitet Variablen für HTML-Dokumentvorlagen vor. class \Drupal\bootstrap\Plugin\Preprocess\PreprocessBase implements PreprocessInterface. What’s next ? 3. Altering theme hook suggestions (the list of possible templates) in the Drupal 8 is delegated to its very own hook. タグ css, drupal, drupal-modules, drupal-8. However, in Drupal 8. No starterkits for less and sass; Theme settings page broken after upgrading the theme (Pre)process functions for nested hook suggestions are not invoked reliably. Drupal 8 hook_preprocess_views_view callback on ajax? Wondering if there is a views hook that runs on ajax when a views exposed filter is submitted? What I am trying to do is grab some field values from the node that view is embedded in. If you wanted to make a custom template available for use to a certain block In Drupal 7, you had to do so in a preprocess function. Hello everyone welcome to Lunch n’ Learn. com/in/jeffrgreenberg accidentalcoder. " Whether you're a site builder, module or theme developer, or simply an end-user of a Drupal website, Drupal 8 has tons in store for you! This blog series will attempt to enumerate the major changes in Drupal 8. Drupal 8 on App Engine Flexible Environment Overview. Preprocess is a very common function in Drupal to alter the content and other properties like Lable of a block. This is the first tutorial in a series where I'll be going through the process of learning Drupal 8 development. One of the first jobs that any Drupal developers need to do is to understand how Drupal works and become used to it. How do I use a preprocess function for a node template? to preprocess my variable array in drupal 8, But it's not working well. ## Why are they useful?. Error message. In this example, we will take a look at how cache contexts can be used, as well as important considerations for developers, by modifying the default breadcrumb in Drupal 8. Drupal 8 brings content management at your very fingertips. In this post, you will learn how to theme Drupal 8 views by overriding default views templates and use our own markup to build an accordion (based on bootstrap 3 accordion). The model's loss function uses the encoder output in its calculations. I have planned to use the hook to alter the block's position to be rendered in the region. I use preprocess functions for other templates, however I cannot figure this one out. A docblock is a specially formatted block of information that goes at the top of every file, class, and function. Since the views listing page is containing the nodes but is not a node page so template_preprocess_node() is not working there. There are a handful of tutorials out there that explain how to implement responsive images in Drupal 8, but none seem to address how to do so using srcset over the element. drush dl devel-8. Also for Drupal 8 you should have a base theme which can be classy or stable. theme file would solve the problems,. Drupal 8 - template_preprocess_system_modules_details. understand and. it was the trigger for us to part from Zen since our D7 was only using some of Zen's preprocess functions that were easily. Also, don't forget to set permissions to view webmentions. x-dev -y drush en kint -y. In this course, you will learn to build your own custom themes for Drupal. The Drupal 8 Theming Guide Theme Hook Suggestions This hook allows any module or theme to provide alternative theme function or template name suggestions and reorder or remove suggestions provided by hook_theme_suggestions_HOOK() or by earlier invocations of this hook. Drupal 8 and preprocess node. Preprocess functions can be implemented in both modules and themes. Learning to use Drupal 8 events will help you understand more about developing with custom modules, and will prepare you for a future where events will (hopefully) replace hooks. class \Drupal\bootstrap\Plugin\Preprocess\ItemListDropdown implements PreprocessInterface; Expanded class hierarchy of ItemListDropdown. 4 Core-Techs Drupal et le reste du monde 5. I’m not going to discuss this code much, but in short, the source code below is for a Drupal 8 preprocess_node function that I use to set variables for (a) a custom view and (b) a custom block. One major difference is that it replaces the default theme engine from PHPTemplate to its own Twig. This session will be a step-by-step walk through of how to build a theme in Drupal 8. Trying to highlight current menu item in Drupal 8 using hook_preprocess_menu. The class covers Drupal 8 theming: using the Twig templating language and other Drupal theme features to implement responsive designs from HTML/graphic templates. Preprocess hooks They still exists in Drupal 8, and very much in the theme layer. (Note: for the purposes of documentation here "mytheme" is the. The hero images are a paragraph field with unlimited cardinality, each with an image and a translatable text. Just like Drupal 7, you can affect the output of certain HTML via preprocess functions. Each day, more Drupal modules are being migrated from Drupal 7 to Drupal 8 and new ones are being created for the Drupal community's latest major release. x core/modules/block/block. theme [prism field=attached_code_post language=php] Be sure to. Getting node IDs in theme preprocess functions in Drupal 8 9 Oct 2015 From a front-end point of view, most of the noise being made about changes from Drupal 7 to 8 have been around Twig and the libraries API. Preprocess is a very common function in Drupal to alter the content and other properties like Lable of a block. Providing mentoring & training to further skills with Drupal 7 and provide new expertise with Drupal 8. Preprocess functions allow Drupal themes to manipulate the variables that are used in Twig template files by using PHP functions to preprocess data before it is exposed to each template. In Drupal 7, with the Devel module, you could use the dpm or dsm. Altering theme hook suggestions (the list of possible templates) in the Drupal 8 is delegated to its very own hook. I created a "Table of contents" view mode for paragraphs and one for nodes. But theme() no longer exists in Drupal 8 and there is no object-oriented equivalent. That is, if I want to create a preprocess_node or template_preprocess_node function, what is the name of the file that those custom Drupal 8 preprocess functions go in? In Drupal 8 your preprocess functions go in a file in your custom theme directory that should be named to end with the. It’s possible to achieve great performance with Authcache in Drupal 7, but it requires a huge amount of work: all code (contrib & custom) must be analyzed to ensure all aspects that cause variations in the output (rendered pages) are taken into account. I'd like to take article layout away from the content producers and create the desired layout in preprocess. I'm checked with the Bartik theme. twig under my theme and am needing a variable which will provide the current node's machine name (node type). I want to get a field value from a content type that I can use in my html--front. theme file at following location ryder/the. Drupal 8 is (almost) here and if you are a developer, it is time to start learning Drupal 8 module development. This introduces my second favorite DX improvement to Drupal 8 – hook_theme_suggestions_HOOK_alter. The preprocess_page function allows us to override the page title of any Drupal page with static text, variables or Drupal tokens. That is, until now. However, It is still an html page so template_preprocess_html() works there. By riddick81 on 12 Dec 2019 at 20:32 UTC. This this blog will enumerate the major changes in Drupal 8 for end users, for site builders, for designers and front-end developers, and for back-end developers. However, I prefer to do it on a row level because it will automatically apply to any view field. This also works, but sure seems ugly. However, the preprocess implementations from modules run first, and those by themes run only last. com/in/jeffrgreenberg accidentalcoder. The Drupal 8 Theming Guide Theme Hook Suggestions This hook allows any module or theme to provide alternative theme function or template name suggestions and reorder or remove suggestions provided by hook_theme_suggestions_HOOK() or by earlier invocations of this hook. Drupal 7 core calls theme() over 200 times alone. class \Drupal\bootstrap\Plugin\PluginBase extends \Drupal\Core\Plugin\PluginBase.