The Views module is the most installed Drupal module and gives great power to developers for building websites. Because of its rich feature set, Views will be integrated in core as part of Drupal 8. Developers may extend the Views functionality by writing custom plugins using the complex plugin system. This helps implementing functionality for special use cases in Views.

In this blog post I would like to explain how to write a custom "Default Argument Handler" for Views and how to develop a simple context system using the Flag module by providing a sample use case as example.

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