actions.ex

def handle_params(params, uri, socket) do
  {:noreply,
   socket
   |> assign(:page, params["page"] || socket.assigns.page)
   |> assign(:order_by, params["order_by"] || socket.assigns.order_by)
   |> apply_action(socket.assigns.live_action, params)
   |> fetch_users()}
end

def handle_event("search", %{"keyword" => keyword}, socket) do
  {:noreply,
   socket
   |> assign(:keyword, keyword)
   |> assign(:page, 1)
   |> fetch_users()
   |> push_patch(to: Routes.user_index_path(socket, :index, keyword: keyword))}
end