Drupal

Your article content type has a dar_start_and_end_date date range field and you want to unpublish all article contents if end value of the date range field is passed.

If your content type uses a date field, you just need to remove .end_value in the coding.

Note: Drupal\Core\Datetime\DrupalDateTime, Drupal\datetime\Plugin\Field\FieldType\DateTimeItemInterface.

Following these below steps to install Drush 8 (Ubuntu and MacOS):

The current version of Drush 8 when I writing this article is 8.2.1

1. Choose the latest version of Drush 8 in the below link: 

https://github.com/drush-ops/drush/releases

You can choose v8.2.2 and download the drush.phar. You can use the bellow command line to download it:

wget https://github.com/drush-ops/drush/releases/download/8.2.1/drush.phar

Note: to use the wget command line, you need to install it first.

Drush is a supporting tool, which is important for any Drupal developers. It helps executing a task with many steps simpler through one command. It's also really helpful in deployment process through integrating it in script.

I will share some basic Drush commands that I usually use:

1. Clear cache / Cache rebuild.

For Drupal 7

drush cc all

For Drupal 8/9

drush cr

2. Delete all tables in the database (available on Drupal 7/8/9).