I have a view which displays all pictures of the content type photo. I’ve set some fields in this view for the display.

This is how iIrender the list of pictures:

views-view-fields–photo.html

<figure class="element-item {{ fields['name'].content|lower }}">     <a href="{{ fields['field_photo_1'].content|lower }}">         <img src="{{ fields['field_photo'].content }}"/>     </a>     <figcaption>         <div class="date">{{ fields['field_date'].content }}</div>         <div class="lieu">{{ fields['field_lieu'].content }}</div>     </figcaption> </figure> {{ drupal_block('comment_block') }} 

I use the Twig tweak module to render a custom block in this template. This block should load all comments for the picture. For that, I need to pass the nid of the node to my block.

Here’s the code of the block:

CommentBlock.php

/**  * Provides a 'CommentBlock' block.  *  * @Block(  *  id = "comment_block",  *  admin_label = @Translation("Comment block"),  *  context = {  *    "node" = @ContextDefinition("entity:node", label = @Translation("Node"))  *  }  * )  */ class CommentBlock extends BlockBase implements ContainerFactoryPluginInterface {    /**    * DrupalCoreEntityEntityTypeManagerInterface definition.    *    * @var DrupalCoreEntityEntityTypeManagerInterface    */   protected $entityTypeManager;    /**    * Constructs a new CommentBlock object.    *    * @param array $configuration    *   A configuration array containing information about the plugin instance.    * @param string $plugin_id    *   The plugin_id for the plugin instance.    * @param string $plugin_definition    *   The plugin implementation definition.    */   public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager) {     parent::__construct($configuration, $plugin_id, $plugin_definition);     $this->entityTypeManager = $entity_type_manager;   }    /**    * {@inheritdoc}    */   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {     return new static(       $configuration,       $plugin_id,       $plugin_definition,       $container->get('entity_type.manager')     );   }    /**    * {@inheritdoc}    */   public function build() {      $build = [];      $node = $this->getContextValue('node');     kint($node->id());      $build['#theme'] = 'comment_ajax';      return $build;   }  } 

What I try is to get the context of the views row into my block. But I get this error:

DrupalComponentPluginExceptionContextException : Required contexts without a value: node 

What am I doing wrong?

I can load my block from template_preprocess_views_view_fields() to link with the nid but I try to understand the context annotation.

Update

Here’s a picture of the view, my custom block returns just a link name “Comment”.

I now load the block programmatically instead of using drupal_block in the preprocess.

$block             = DrupalblockEntityBlock::load('commentblock'); $variables['test'] = Drupal::entityTypeManager()   ->getViewBuilder('block')   ->view($block); 

Then I print this block in views-view-fields.html.twig:

{{ fields['title'].content }} {{ test }} 

If I kint the context in my block I still get an error except if I set the annotation required = FALSE.

 *   context = {  *     "node" = @ContextDefinition(  *       "entity:node",  *       label = @Translation("Current Node"),  *       required = FALSE,  *     )  *   } 

But the context is still empty.