You can create a new date/time format by navigating to: Admin -> Configuration -> Regional and Language -> Date and Time format and click on 'Add Format'. Once you’ve created date format, you can control the way date is displayed on the node using preprocess function. In {theme_name}.theme file, add the following lines /** * Implements hook_preprocess_node */ function THEME_NAME_preprocess_node(&$variables) { // Getting the node creation time stamp from the node object. $date...

I had the issue where I needed to filter an array list by a specific column.  In my instance, the column is language.  To be able to reduce the query to the language column the code required is levels = selectedCategory?.levels.filter("language = %@", language)Language can be any string, in this instance for me language is a two alpha character such as 'fr', 'en' or 'de'. Further to this you can continue to chain this query through including sort as per levels =...