Description: The Action Controller is the component of web application frameworks, such as Ruby on Rails, that handles incoming requests and responses in a web application. It acts as an intermediary between the model and the view, facilitating interaction between these two elements. When a user makes a request, the controller receives that request, processes the necessary information, interacts with the model to obtain or modify data, and finally selects the appropriate view to present the response to the user. Controllers follow the MVC (Model-View-Controller) pattern, allowing for a clear and structured organization of code. Each controller is typically associated with a specific resource of the application, and its actions correspond to the CRUD (Create, Read, Update, Delete) operations that can be performed on that resource. Additionally, controllers can include filters and helper methods to manage application logic more efficiently. In summary, the Action Controller is fundamental to the architecture of a web application, as it effectively manages business logic and user interaction.
