Pattern

    <.tabs
  class="tabs"
  value={@value}
  controlled
  on_value_change="tabs_pattern_value"
  items={Corex.Content.new([
    %{value: "lorem", label: "Lorem", content: "Consectetur adipiscing elit. Sed sodales ullamcorper tristique."},
    %{value: "duis", label: "Duis", content: "Nullam eget vestibulum ligula, at interdum tellus."},
    %{value: "donec", label: "Donec", content: "Congue molestie ipsum gravida a. Sed ac eros luctus."}
  ])}
/>

  

    def mount(_params, _session, socket) do
  {:ok, assign(socket, :value, "lorem")}
end

def handle_event("tabs_pattern_value", %{"value" => value}, socket) do
  v =
    case value do
      nil -> "lorem"
      "" -> "lorem"
      other -> to_string(other)
    end

  {:noreply, assign(socket, :value, v)}
end