![]() ![]() There are cases when our block requires additional objects or resources to work. This text is styled by the custom.css library attached to the twig template rendering this block. * We use hook_theme to define the templates used.įunction ultimate_block_guide_theme($existing, $type, $theme, $path) To achieve this you have to set up the following: You can extend the custom code in your block to render a block with a Twig template. drush cr).ĭrupal uses the Twig template engine to display the content. If your block is not on the list, be sure to rebuild the Drupal caches (e.g. ![]() If your block fails to place in a region with no error on screen or in watchdog, check the PHP / Apache error logs.php file must be in the correctly labelled directory ( src/Plugin/Block/), otherwise it won't be discovered by Drupal. Be sure to double check all paths and filenames.If the class name is different, the block will appear in the list of available blocks, however, you will not be able to add it. The class name and the file name must be the same ( class HelloBlock and src/Plugin/Block/HelloBlock.php).In case something goes wrong and your block doesn’t appear you can use the following tips to figure out what went wrong. Navigate to the page on your site where the block is displayed, and voila :). Click on the Place block button next to the region, find your block in the list of available blocks and then configure its options. Then select the region in which you want the block to be placed. To perform that navigate to Structure -> Block layout. Now that you’ve created your own block, either by using GUI or programmatically, it is time to place that block on the site. 'This is a simple block that displays some text!', blockSubmit($form, FormStateInterface $form_state): Code to be executed when the configuration form gets submitted.blockValidate($form, FormStateInterface $form_state): Validates the values provided by the user when configuring form.blockForm($form, FormStateInterface $form_state): Used for definition of additional form fields in the blocks configuration form.access(AccountInterface $account, $return_as_object): Checks whether the current block will get displayed for a user or not.label(): Returns a string with a block label.build(): This methods returns the render array of the block.Namespace: In order for the custom block to be recognized by Drupal it also needs to be in the proper namespace.Context definitions -> If our plugin requires any additional objects to do its work then we can provide them in the Context definitions section of the annotation -> Optional.Category -> Blocks are put in categories in the admin UI, defining this parameter will put the Block in the specified category -> Optional.Admin_label -> Label which will appear in GUI -> Mandatory. ![]()
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