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avatar Drupal

Hide and unhide custom block programatically drupal 9

cn flag
ImMrBlack

Hello I have created a module to display a block. I would like to set the block visibity to visible and hidden in the homepage based on a condition.

like this:

edit:


//fetch status from database then check condition
if ($status = 1){
//make block visible
}else{
//hide block
}

I have searched all over the internet and could not find how to make it work.

I have a form that is used to add contents to a database and it has a checkbox to whether make the make the block visible or not.

So I would fetch the status(visible/hidden) of the block from the database and then make the block visible.

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Kevin avatar
in flag
Kevin
Why not create a new visibility context instead of this?
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cn flag
ImMrBlack
hello @Kevin thanks for your comment. Can you please give me more information about this, actually I am new to drupal.
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NicklasF avatar
us flag
NicklasF
We need more information about the condition in order to give you the best solution as in Drupal, you can do this multiple ways: in the block configuration, hooks and/or twig templates
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cn flag
ImMrBlack
@NicklasMandrupFrederiksen I have just updated the question do check it please
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Kevin avatar
in flag
Kevin
https://www.jaypan.com/tutorial/custom-drupal-block-visibility-plugins-and-condition-plugin-api
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Score:3
4uk4 avatar Drupal
cn flag
4uk4

When you create a module to display a block this usually means you implement a block plugin. Then you can add the condition to the plugin directly:

  protected function blockAccess(AccountInterface $account) {
    $access = $this->languageManager->isMultilingual() ? AccessResult::allowed() : AccessResult::forbidden();
    return $access->addCacheTags(['config:configurable_language_list']);
  }

Example from core LanguageBlock::blockAccess().

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cn flag
ImMrBlack
Thanks this worked
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