feat(startpage): allow disabling startpage

We add back the functionality to disable the startpage. If a non-empty redirect url is configured,
all startpage urls are disabled except for the index page which redirects to the given url.

jdav_web/startpage/templates/startpage/navigation.html

@@ -1,4 +1,4 @@
-{% load static %}
+{% load static common %}
 
 <script>
 window.onscroll = () => {
@@ -36,18 +36,22 @@ window.onclick = function(event) {
 }
 
 </script>
+{% settings_value 'STARTPAGE_REDIRECT_URL' as redirect_url %}
 
 <div class="navigation">
     <div id="myNavbar" class="navbar">
         <a href="/"><img style="margin: 0; padding: 0;"src="{% static 'general/img/jdav_logo_sektion.png' %}"></a>
+        {% if not redirect_url %}
         <div>
         <button onclick="myFunction()"class="dropbtn">Menü</button>
         <a class="nav" href="/kompass">Login</a>
         </div>
+        {% endif %}
     </div>
 
     <div class="dropdown">
         <div id="myDropdown" class="dropdown-content">
+{% if not redirect_url %}
             <div class="menu-level-1">
                 <ul>
                     <li>
@@ -117,6 +121,7 @@ window.onclick = function(event) {
                     </li>
                 </ul>
             </div>
+{% endif %}
         </div>
     </div>
 </div>

jdav_web/startpage/urls.py

@@ -4,7 +4,14 @@ from django.urls import re_path
 from . import views
 
 app_name = "startpage"
-urlpatterns = [
+
+if settings.STARTPAGE_REDIRECT_URL != '':
+    urlpatterns = [
+        re_path(r'^$', views.redirect, name='index'),
+        re_path(r'^impressum/?$', views.static_view('startpage/impressum.html'), name='impressum'),
+    ]
+else:
+    urlpatterns = [
         re_path(r'^$', views.index, name='index'),
         re_path(r'^impressum/?$', views.static_view('startpage/impressum.html'), name='impressum'),
         re_path(r'^aktuelles/?$', views.aktuelles, name='aktuelles'),
@@ -17,4 +24,4 @@ urlpatterns = [
                 views.post, name='post'),
         re_path(r'^(?P<section_name>{pattern}+)/?$'.format(pattern=settings.STARTPAGE_URL_NAME_PATTERN),
                 views.section, name='section'),
-]
+    ]

jdav_web/startpage/views.py

@@ -1,4 +1,4 @@
-from django.shortcuts import redirect, get_object_or_404
+from django.shortcuts import redirect as django_redirect, get_object_or_404
 from django import shortcuts
 from django.conf import settings
 from django.urls import reverse
@@ -28,6 +28,10 @@ def index(request):
     return render(request, 'startpage/index.html', context)
 
 
+def redirect(request):
+    return django_redirect(settings.STARTPAGE_REDIRECT_URL)
+
+
 # static view factory
 def static_view(template_path):
     def view(request):