DRUPAL 8 CACHE CONTEXTS HOW TO
Want more? Read How to disable block caching in drupal 8. Drupal core also provides a mechanism here that allows us to say this piece of cache data relies on this other piece of cache data. A cache key is not the right solution as dynamicpagecache wont vary on the right things. By this, you're really using the true power of drupal 8 caching. Register a template in your helloblock.module file, by adding the following: /**įunction hello_block_theme($existing, $type, $theme, $path) !īecause you're using the right cache context, the block will only get cached for every specific user. $first_name = $user->get('first_name')->getString() We are well aware of the fact that Drupal Cache API is a remarkable feature introduced in Drupal 8.
In your module called hello_block in src/Plugin/Block add a file named HelloBlock.php: namespace Drupal\hello_block\Plugin\Block Drupal 8 Cache Context: An efficient way for context based caching. This is where you set the cache lifetime to be permanent and invalidate (purge) that cached item. The secret lies in using the right cache context on the build() function of your block. Drupal 8 introduced another option called cache invalidation. I'll share with you some code on how to cache blocks per user.
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