Reply for Phoenix LiveView

Pipe the response of LiveView functions

Installation

Simply add reply to your list of dependencies in your mix.exs:

def deps do
  [
    {:reply, "~> 1.0"}
  ]
end

and import it in your Web-Module lib/my_app_web.ex inside html_helpers

defp html_helpers do
  quote do
    # HTML escaping functionality
    import Phoenix.HTML

+   import Reply

    ...

Documentation can be found at https://hexdocs.pm/reply

Usage

You can now use reply/2 to pipe the response in mount and handle_* all the way down.

def mount(_params, _session, socket) do
  socket
  |> assign(:posts, Blog.list_posts())
  |> assign(:post, nil)
  |> reply(:ok)
end

def handle_params(%{"id" => id}, _, socket) do
  socket
  |> assign(:post, Blog.get_post!(id))
  |> reply(:noreply)
end

and if you want to reply with data, it works as well using reply/3

def handle_event("update", params, socket) do
  {:ok, post} = Blog.get_post!(id)

  socket
  |> assign(:post, Blog.get_post!(id))
  |> reply(:reply, %{last_update: post.updated_at}})
end