Update

lib/nulla_web/controllers/api/announce_controller.ex

@@ -0,0 +1,43 @@
+defmodule NullaWeb.Api.AnnounceController do
+  use NullaWeb, :controller
+
+  alias Nulla.Announces
+  alias Nulla.Announces.Announce
+
+  action_fallback NullaWeb.FallbackController
+
+  def index(conn, _params) do
+    announces = Announces.list_announces()
+    render(conn, :index, announces: announces)
+  end
+
+  def create(conn, %{"announce" => announce_params}) do
+    with {:ok, %Announce{} = announce} <- Announces.create_announce(announce_params) do
+      conn
+      |> put_status(:created)
+      |> put_resp_header("location", ~p"/api/announces/#{announce}")
+      |> render(:show, announce: announce)
+    end
+  end
+
+  def show(conn, %{"id" => id}) do
+    announce = Announces.get_announce!(id)
+    render(conn, :show, announce: announce)
+  end
+
+  def update(conn, %{"id" => id, "announce" => announce_params}) do
+    announce = Announces.get_announce!(id)
+
+    with {:ok, %Announce{} = announce} <- Announces.update_announce(announce, announce_params) do
+      render(conn, :show, announce: announce)
+    end
+  end
+
+  def delete(conn, %{"id" => id}) do
+    announce = Announces.get_announce!(id)
+
+    with {:ok, %Announce{}} <- Announces.delete_announce(announce) do
+      send_resp(conn, :no_content, "")
+    end
+  end
+end