<%= form_for(PreSale.new, remote: true) do |f| %> <%= f.hidden_field :customer_id %> <%= f.hidden_field :user_id %> <%= f.hidden_field :open_cash_register_id %> <%= f.hidden_field :sale_type %> <%= f.hidden_field :product_id %> <%= f.hidden_field :quantity %> <%= f.hidden_field :amount %> <%= f.hidden_field :tax %> <%= f.hidden_field :discount %> <%= f.hidden_field :total %> <%= f.submit 'save', {:class=>"hidden"}%> <% end %>