How to add additional params to a button_to form?

Question

I want to have a Submit button. It updates one field on the submission; submission.state = :submitted

Now, I could make a custom route and

Answer 1

Add params:{} at the end, it will generate hidden_field

<%= button_to user.name, user, class:"btn btn-default", style:"", method: :patch, remote: true, params: { a_field: false, an_other_field:"a new value" } %>