Sync gem not updating

Question

I've got a sync partial that is under sync/booths/_chat_widget.html.haml Chats controller and Booths controller.

I have below code that is under booths/show.html.haml

= sync partial: 'chat_widget', resource: @booth

Which is:

#chat_widget{:title => "Booth chat", :style => "display:none;"}
  .panel
    .panel-body
      %ul.chat
        - @booth.chats.each do |chat|
          = render partial: "chats/chat", locals: { chat: chat }
    .panel-footer
      = simple_form_for(@booth, url: chats_path, method: :post, remote: true) do |f|
        .input-group
          %input#chat-message.form-control.input-sm{name: "chat[message]", placeholder: "Type your message here...", type: "text"}
          %input{type: "hidden", name: "chat[from_user_id]", value: "#{current_user.id}"}
          %input{type: "hidden", name: "chat[chattable_id]", value: "#{@booth.id}"}
          %input{type: "hidden", name: "chat[chattable_type]", value: "Booth"}
          %span.input-group-btn
            %button#btn-chat.btn.btn-warning.btn-sm{:type => 'submit'}
              Send
        = f.error_notification

This creates the Chats in Chats controller with below code:

def create
    @chat = Chat.new(chat_params)
    respond_to do |format|
      if @chat.save
        sync_update @chat
        format.html{ redirect_to @chat, notice: 'Chat was successfully created.' }
        format.js
      else
        format.html{ render action: 'new' }
        format.js
      end
    end
  end

However this does not seem to update at all. Is this because it should be under sync/chat folder since the main show view is under Booth?