To enable revision and to log revision message on saving a node in drupal 8 we can use setNewRevision() and setRevisionLogMessage(). Find the below code which uses entity save with revision.
In each and every language there is a need of following coding standards. The Coding standard will differ based on each language. This article will demonstrate the coding standard we should following for Drupal Content Management System(CMS). This article compares coding standards for both Drupal 7 and Drupal 8 with some demos. Also, it will support the best approach to hack the Drupal Core and Contrib modules.
In Drupal while developing it not showing the errors instead of it will be showing us a White screen. This screen is known as White Screen Of Death(WSOD). During development, we need to debug the errors, for this purpose we want to show errors. To show errors instead or white screen we need to add below lines in "settings.php".
In Drupal 8 the messages are logged using core class function. There are two functions used to log the messages into database.