GetRequest

From Platform Documentation

You can access information submitted by users through forms or GET requests with the $this->GetRequest function. You have access to GetRequest from anywhere within the View you've created.

If I create a form with a field called “FirstName” and submit it, I can use $this->GetRequest ('FirstName') in my callback function to get the data the user has submitted. GetRequest will return an empty value if no data by that name was submitted. Second, GetRequest can return arrays if they're passed to the browser properly and handled by your View appropriately.

When you request data through $this->GetRequest you can be sure that it's been properly parsed for malicious code and security circumvention attempts. It's suggested you use GetRequest whenever pulling information from the user that will be used in a database.