A new bidding can only placed in the new form if a bidding round is currently running. The bidding round is set automatically when opening the form.

lib/beet_round_server_web/live/bidding_live/form.ex

@@ -3,6 +3,7 @@ defmodule BeetRoundServerWeb.BiddingLive.Form do
 
   alias BeetRoundServer.Biddings
   alias BeetRoundServer.Biddings.Bidding
+  alias BeetRoundServer.BiddingRounds.BiddingRoundFacade
 
   @impl true
   def render(assigns) do
@@ -12,6 +13,12 @@ defmodule BeetRoundServerWeb.BiddingLive.Form do
         {@page_title}
         <:subtitle>Bitte gib hier den Betrag ein, den Du monatlich bezahlen willst.</:subtitle>
       </.header>
+      <%= if @bidding.bidding_round == 0 do %>
+        <p><b>Keine Bietrunde aktiv.</b></p>
+        <footer>
+          <.button navigate={return_path(@current_scope, @return_to, @bidding)}>Cancel</.button>
+        </footer>
+      <% else %>
         <.form for={@form} id="bidding-form" phx-change="validate" phx-submit="save">
           <.input field={@form[:bidding_round]} type="number" label="Bidding round" />
           <.input field={@form[:amount]} type="number" label="Amount" />
@@ -22,15 +29,19 @@ defmodule BeetRoundServerWeb.BiddingLive.Form do
             <.button navigate={return_path(@current_scope, @return_to, @bidding)}>Cancel</.button>
           </footer>
         </.form>
+      <% end %>
     </Layouts.app>
     """
   end
 
   @impl true
   def mount(params, _session, socket) do
+    # current_round = BiddingRoundFacade.get_current_round()
+
     {:ok,
      socket
      |> assign(:return_to, return_to(params["return_to"]))
+     #  |> assign(bidding_round: current_round)
      |> apply_action(socket.assigns.live_action, params)}
   end
 
@@ -47,7 +58,12 @@ defmodule BeetRoundServerWeb.BiddingLive.Form do
   end
 
   defp apply_action(socket, :new, _params) do
-    bidding = %Bidding{user_id: socket.assigns.current_scope.user.id}
+    current_round = BiddingRoundFacade.get_current_round()
+
+    bidding = %Bidding{
+      user_id: socket.assigns.current_scope.user.id,
+      bidding_round: current_round
+    }
 
     socket
     |> assign(:page_title, "Neues Gebot")