How to auto-submit Rails formhelper, when onchange occurs on select dropdown (populated from DB)
formhelper, ruby-on-rails
Solution
See documentation: http://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsHelper.html#method-i-select
The arguments goes like this:
select(object, method, choices, options = {}, html_options = {})
`:onchange` belongs to html options thus you need to fix your select box to this:
select('post', 'state', @suppliers.collect {|s| [s.supp_state, s.id]}, :onchange => "this.form.submit()")
Problem
I have a form in my View with two dropdowns, both populated from db tables, where I'd like to auto-submit the form when onchange event occurs on either dropdown: ``` <%= form_for @products, url: products_path, method: :get do |f| %> <!-- POPULATE DROPDOWNS FROM DB DATA --> <%= select('post', 'state', @suppliers.collect {|s| [s.supp_state, s.id]}) %> <%= select('post', 'category_id', @categories.collect {|c| [c.cat_name, c.id]}) %> <div class='actions inline'><%= f.submit 'GO!' %></div> <% end %> ``` I tried variants of the following but I'm quite new at Ruby/Rails/JS.. no luck so far: ``` <%= select('post', 'state', @suppliers.collect {|s| [s.supp_state, s.id]}, :onchange => "this.form.submit()") %> <%= select('post', 'state', @suppliers.collect {|s| [s.supp_state, s.id]}, :input_html => {:onchange => "this.form.submit()") %> ``` Any advice is greatly appreciated!