simple_form sending parameter

Question

I'm trying to send an extra parameter submiting a form in rails using simple_form I thought this would do the trick:

<%= simple_form_for(@user, :groupId => 1) do |f| %>

but in tne controller, the parameter is ignored

I found an answer in here but I really like to have a better solution.

Answer 1

How about:

<%= simple_form_for @user, url: user_path(@user, :groupId => 1) do |f| %>

simple_form_for has a similar usage to form_for. See http://apidock.com/rails/ActionView/Helpers/FormHelper/form_for