Initially reported here: https://elixirforum.com/t/updating-a-stream-with-reset-…true-does-not-update-element-attributes/63011
```elixir
Application.put_env(:sample, Example.Endpoint,
http: [ip: {127, 0, 0, 1}, port: 5001],
server: true,
live_view: [signing_salt: "aaaaaaaa"],
secret_key_base: String.duplicate("a", 64)
)
Mix.install([
{:plug_cowboy, "~> 2.5"},
{:jason, "~> 1.0"},
{:phoenix, "~> 1.7"},
# please test your issue using the latest version of LV from GitHub!
{:phoenix_live_view, github: "phoenixframework/phoenix_live_view", branch: "main", override: true},
])
# build the LiveView JavaScript assets (this needs mix and npm available in your path!)
path = Phoenix.LiveView.__info__(:compile)[:source] |> Path.dirname() |> Path.join("../")
System.cmd("mix", ["deps.get"], cd: path, into: IO.binstream())
System.cmd("npm", ["install"], cd: Path.join(path, "./assets"), into: IO.binstream())
System.cmd("mix", ["assets.build"], cd: path, into: IO.binstream())
defmodule Example.ErrorView do
def render(template, _), do: Phoenix.Controller.status_message_from_template(template)
end
defmodule Example.HomeLive do
use Phoenix.LiveView, layout: {__MODULE__, :live}
def render("live.html", assigns) do
~H"""
<script src="/assets/phoenix/phoenix.js"></script>
<script src="/assets/phoenix_live_view/phoenix_live_view.js"></script>
<%!-- <script src="http://localhost:8000/priv/static/phoenix_live_view.js"></script> --%>
<%!-- uncomment to use enable tailwind --%>
<%!-- <script src="https://cdn.tailwindcss.com"></script> --%>
<script>
let liveSocket = new window.LiveView.LiveSocket("/live", window.Phoenix.Socket)
liveSocket.connect()
</script>
<style>
* { font-size: 1.1em; }
</style>
<%= @inner_content %>
"""
end
@impl true
def render(assigns) do
~H"""
<div>
<button phx-click="flip">FLIP</button>
<div id="list" phx-update="stream">
<div
:for={{id, el} <- @streams.list}
id={id}
class={if(el.flag, do: "text-red-500", else: "text-green-500") |> IO.inspect(label: "the class")}
>
<%= "id: #{el.id} flag: #{el.flag}" %>
</div>
</div>
</div>
"""
end
@impl true
def mount(_params, _session, socket) do
flag = true
data = [%{id: 1, flag: flag}]
{:ok, socket |> assign(flag: flag) |> stream(:list, data, reset: true)}
end
@impl true
def handle_event("flip", _, socket) do
flag = !socket.assigns.flag
data = [%{id: 1, flag: flag}]
{:noreply, socket |> assign(flag: flag) |> stream(:list, data, reset: true)}
end
end
defmodule Example.Router do
use Phoenix.Router
import Phoenix.LiveView.Router
pipeline :browser do
plug(:accepts, ["html"])
end
scope "/", Example do
pipe_through(:browser)
live("/", HomeLive, :index)
end
end
defmodule Example.Endpoint do
use Phoenix.Endpoint, otp_app: :sample
socket("/live", Phoenix.LiveView.Socket)
plug Plug.Static, from: {:phoenix, "priv/static"}, at: "/assets/phoenix"
plug Plug.Static, from: {:phoenix_live_view, "priv/static"}, at: "/assets/phoenix_live_view"
plug(Example.Router)
end
{:ok, _} = Supervisor.start_link([Example.Endpoint], strategy: :one_for_one)
Process.sleep(:infinity)
```
