rails check_box_tag set checked with default value

Question

I currently have a rails check_box_tag call that looks like

check_box_tag #{name}

I want to include a checked attribute, which I know I can do

Answer 1

If you pass in a value of "1" to the value field, it will pass-on the value of the real state of the checkbox, regardless of the checked default value:

is_checked = 

check_box_tag :show_defaults, '1', is_checked

(now always reflects user input)