View source for Live View Store Data in URL Params

<source>
defmodule AppWeb.PageLive do
  use AppWeb, :live_view

  def mount(_params, _session, socket) do
    {:ok, socket}
  end

  def handle_params(params, _uri, socket) do
    count = String.to_integer(params["count"] || "0")
    {:noreply, assign(socket, count: count)}
  end

  def handle_event("increment", _, socket) do
    new_count = socket.assigns.count + 1
    # Use ~p instead of Routes
    {:noreply, push_patch(socket, to: ~p"/?count=#{new_count}")}
  end

  def handle_event("decrement", _, socket) do
    new_count = max(0, socket.assigns.count - 1)
    # Use ~p instead of Routes
    {:noreply, push_patch(socket, to: ~p"/?count=#{new_count}")}
  end

  def render(assigns) do
    ~H"""
    <div>
      <h1>Count: <%= @count %></h1>
      <button phx-click="decrement">-</button>
      <button phx-click="increment">+</button>
    </div>
    """
  end
end

</source>