Common commands Themes and plugins have similar command lines.  So rather than note them individually and miss clarity, the reference {type} can be replaced with the term plugin or theme.   install php artisan {type}:install AuthorName.PluginName  list php artisan {type}:list   refresh plugins php artisan plugin:refresh AuthorName.PluginName  Utility references   Clear cache php artisan cache:clear  Clear config php artisan config:clear  Restart...

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 =...