pass hidden field to the controller

How do I get the value form the hidden field and pass it to the
controller?Also how do I get the value in the controller.

If you include a hidden field in a form, you can access it from params
in the controller

so, if you have the following in the view
hidden_field_tag 'field_name', 'value'

You can get it in the controller as

Andrew Timberlake

"I have never let my schooling interfere with my education" - Mark Twain

Thanks Andrew.