Description: Parameters are the values passed to a controller action in web applications, typically from a form submission. These parameters allow the application to receive user data, such as login information, comments, or any other type of input. In the context of MVC frameworks, parameters are encapsulated in an object called ‘params’, which acts as a hash containing all the sent data. This facilitates the manipulation and validation of information before it is processed by the controller logic. Parameters can include both form data and URL data, allowing developers to easily access specific information. Additionally, modern frameworks provide tools to filter and sanitize these parameters, ensuring that only expected data is processed and thus avoiding security vulnerabilities. In summary, parameters are fundamental for user interaction with the application, enabling effective and secure communication.
