Hello, I'm new to Ruby, and I'm learning it with a project that also involves rails... I'm stuck with an apparently simple problem, I receive from a form a String and I need to extend it to a fixed char number (it must be 16 chars with eventual trailing spaces) I've tought to convert it to an array, it's easy but I don't know how to extend it to the needed size. Also I could add spaces to the string, but the again how can i control how many I need to add? Any hint on how I could do that? Thank you very much