radio/checkbox needs to be checked

I frequently have to use methods such as `radio_button` and `check_box_tag` when I don`t have an object with a method that will automatically determine the value of the input field. Therefore, I have to check to see if a certain parameter has been passed, and if so, if the parameter`s value matches that of the input`s value. This method does that.It`s designed to be used in a Rails helper. You can either pass it the object, method, and value (the same parameters as, for example, radio_button) or name and value (the same parameters as radio_button_tag).