thirteen-tien-len/app/views/layouts/_new_message_form.html.haml

= form_with(model: [@room, @message], remote: true) do |f|
  = f.text_field :content, id: 'chat-text', class: "form-control msg-content", autocomplete: 'off'
  = f.submit "Send Message", data: { disable_with: false }