Patterns

    <.tags_input
  class="tags-input"
  value={["lorem", "duis", "donec"]}
  on_value_change="tags_patterns_value_changed"
>
  <:label>Labels</:label>
  <:close><.heroicon name="hero-x-mark" /></:close>
</.tags_input>

  

    def handle_event("tags_patterns_value_changed", %{"id" => _id, "value" => value}, socket)
    when is_list(value) do
  {:noreply, assign(socket, :tags, value)}
end

  

    <.tags_input
  class="tags-input"
  value={["lorem", "duis"]}
  on_value_change="tags_patterns_validated_changed"
>
  <:label>Allowed: lorem, duis, donec</:label>
  <:close><.heroicon name="hero-x-mark" /></:close>
</.tags_input>

  

    def mount(_params, _session, socket) do
  {:ok, assign(socket, :allowed_tags, ["lorem", "duis", "donec"])}
end

def handle_event("tags_patterns_validated_changed", %{"id" => id, "value" => value}, socket)
    when is_list(value) do
  allowed = socket.assigns.allowed_tags
  filtered = Enum.filter(value, &(&1 in allowed))

  {:noreply,
   socket
   |> assign(:tags_validated, filtered)
   |> Corex.TagsInput.set_value(id, filtered)}
end