I’m trying to generate a dynamic local action via a derivative. The derivative works and returns a link generated dynamically but the cache seems to maintain its value.

As per this Drupal core change log, I understood I could set cache parameters on the derivative, which I tried but in vain so far – I’m not very familiar with these concepts yet so appreciate any guidance on how to prevent $gid from being cached.

Here’s my local action leads.links.action.yml:

leads.new_deal:   deriver: 'DrupalleadsPluginDerivativeDynamicLocalTasks' 

Here’s my derivative:

<?php  namespace DrupalleadsPluginDerivative;  use DrupalComponentPluginDerivativeDeriverBase; use DrupalCoreCacheCacheableDependencyInterface; use DrupalCoreCacheCacheableDependencyTrait;   /** * Defines dynamic local tasks. */ class DynamicLocalTasks extends DeriverBase {   use CacheableDependencyTrait;   /**   * {@inheritdoc}   */   public function getDerivativeDefinitions($base_plugin_definition) {     $groupLead = getGroupsUserIsLead();      if (isset($groupLead[0])){       $gid = $groupLead[0];     }     else{       return DrupalCoreAccessAccessResult::forbidden();     }      // Implement dynamic logic to provide values for the same keys as in example.links.task.yml.     $this->derivatives['leads.new_deal'] = $base_plugin_definition;     $this->derivatives['leads.new_deal']['title'] = "New Deal";     $this->derivatives['leads.new_deal']['route_name'] = 'entity.group_content.create_form';     $this->derivatives['leads.new_deal']['appears_on'] = ['leads.deals'];     $this->derivatives['leads.new_deal']['route_parameters'] = ['plugin_id' => 'group_node:deals','group' => $gid];     $this->cacheMaxAge = 0;     $this->getCacheMaxAge();          return parent::getDerivativeDefinitions($base_plugin_definition);   }    public function getCacheMaxAge() {     return 0;   }  }