fix foreign key error #15

lib/proptrackr_web/controllers/user_delete_controller.ex

@@ -3,6 +3,7 @@ defmodule PropTrackrWeb.UserDeleteController do
 
   alias PropTrackr.Accounts.User
   alias PropTrackr.Repo
+  alias Ecto.Multi
 
   def index(conn, _params) do
     render(conn, "index.html")
@@ -13,13 +14,18 @@ defmodule PropTrackrWeb.UserDeleteController do
     user = Repo.get(User, user_id)
 
     if user do
-      case Repo.delete(user) do
-        {:ok, _deleted_user} ->
+      result =
+        Multi.new()
+          |> Multi.delete_all(:properties, Ecto.assoc(user, :properties))
+          |> Multi.delete(:user, user)
+          |> Repo.transaction()
+      case result do
+        {:ok, _} ->
           conn
           |> delete_session(:user_id)
           |> put_flash(:info, "Your account has been deleted successfully.")
           |> redirect(to: "/")
-        {:error, _reason} ->
+        {:error, _, _, _} ->
           conn
           |> put_flash(:error, "An error occurred while deleting your account.")
           |> redirect(to: "/me/delete")