Add random page

lib/wiki_web/controllers/page_controller.ex

@@ -4,6 +4,7 @@ defmodule WikiWeb.PageController do
   alias Wiki.Repo
   alias Wiki.Content
   alias Wiki.Content.{Page, Upload}
+  import Ecto.Query
 
   plug :get_page
        when action in [
@@ -163,4 +164,11 @@ defmodule WikiWeb.PageController do
     |> put_flash(:info, "Page deleted successfully.")
     |> redirect(to: Routes.page_path(conn, :index))
   end
+
+  def random(conn, _params) do
+    user = conn.assigns.current_user
+    page_ids = Repo.all(from p in Page, where: p.user_id == ^user.id, select: p.id)
+    random_page = Enum.random(page_ids)
+    redirect(conn, to: Routes.page_path(conn, :show, random_page))
+  end
 end

lib/wiki_web/router.ex

@@ -62,6 +62,7 @@ defmodule WikiWeb.Router do
 
     resources "/pages", PageController, except: [:index]
     get "/", PageController, :index
+    get "/random", PageController, :random
     post "/pages/:id/uploads", PageController, :create_upload
     get "/pages/:id/uploads/:upload_id", PageController, :get_upload
     delete "/pages/:id/uploads/:upload_id", PageController, :delete_upload

lib/wiki_web/templates/layout/app.html.eex

@@ -16,6 +16,7 @@
             <li><a href="/">Home</a></li>
             <%= if @current_user do %>
               <li><%= link "New Page", to: Routes.page_path(@conn, :new) %></li>
+              <li><%= link "Random", to: Routes.page_path(@conn, :random) %></li>
             <% end %>
             <%= if function_exported?(Routes, :live_dashboard_path, 2) do %>
               <li><%= link "LiveDashboard", to: Routes.live_dashboard_path(@conn, :home) %></li>