feat: Add basic translation support

src/fellchensammlung/mail.py

@@ -12,8 +12,8 @@ from notfellchen.settings import host
 def mail_admins_new_report(report):
     subject = _("New report")
     for moderator in Member.objects.filter(Q(trust_level=Member.MODERATOR) | Q(trust_level=Member.ADMIN)):
-        greeting = _("Moin,\r\n")
-        new_report_text = "es wurde eine Vermittlung gemeldet.\r\n"
+        greeting = _("Moin,") + "\r\n"
+        new_report_text = _("es wurde eine Vermittlung gemeldet.") + "\r\n"
         if len(report.reported_broken_rules.all()) > 0:
             reported_rules_text = f"Ein Verstoß gegen die folgenden Regeln wurde gemeldet [{', '.join(report.reported_broken_rules.all())}]\r\n"
         else:

src/fellchensammlung/templates/fellchensammlung/header.html

@@ -22,9 +22,26 @@
                     <button type="submit">Ausloggen</button>
                 </form>
             </div>
-            {% else %}
+        {% else %}
             <a href="{% url "django_registration_register" %}">Registrieren</a>
             <a href="{% url "login" %}">Einloggen</a>
         {% endif %}
+
+        <form action="{% url 'change-language' %}" method="post" onchange='this.form.submit()'>
+        {% csrf_token %}
+        <select name="language" onchange='this.form.submit()'>
+            {% get_current_language as LANGUAGE_CODE_CURRENT %}
+            {% get_available_languages as LANGUAGES %}
+            {% for language in LANGUAGES %}
+                <option value="{{ language.0 }}" {% if language.0 == LANGUAGE_CODE_CURRENT %} selected{% endif %}>
+                    {{ language.0|language_name_local }}
+                </option>
+                <!--<option value="{{ language.0 }}" {% if language.0 == LANGUAGE_CODE %} selected{% endif %}>
+            {{ language.0|language_name_local }} ({{ language.0 }})
+        </option>-->
+            {% endfor %}
+        </select>
+        <!--<input type="submit" value={% translate "change" %}>-->
+        </form>
     </div>
 </div>

src/fellchensammlung/urls.py

@@ -47,4 +47,6 @@ urlpatterns = [
     path('accounts/', include('django_registration.backends.activation.urls')),
     path('accounts/', include('django.contrib.auth.urls')),
 
+    path('change-language', views.change_language, name="change-language")
+
 ]

src/fellchensammlung/views.py

@@ -1,6 +1,9 @@
+from django.http import HttpResponseRedirect
 from django.shortcuts import render, redirect
 from django.urls import reverse
+from django.contrib.auth.decorators import login_required
 from .mail import mail_admins_new_report
+from notfellchen import settings
 
 from fellchensammlung.models import AdoptionNotice, MarkdownContent, Animal, Rule, Image, Report, ModerationAction, \
     Member
@@ -15,6 +18,24 @@ def index(request):
     return render(request, 'fellchensammlung/index.html', context=context)
 
 
+def change_language(request):
+    if request.method == 'POST':
+        language_code = request.POST.get('language')
+        if language_code:
+            if language_code != settings.LANGUAGE_CODE and language_code in list(zip(*settings.LANGUAGES))[0]:
+                redirect_path = f'/{language_code}/'
+            elif language_code == settings.LANGUAGE_CODE:
+                redirect_path = '/'
+            else:
+                response = HttpResponseRedirect('/')
+                return response
+            from django.utils import translation
+            translation.activate(language_code)
+            response = HttpResponseRedirect(redirect_path)
+            response.set_cookie(settings.LANGUAGE_COOKIE_NAME, language_code)
+    return response
+
+
 def adoption_notice_detail(request, adoption_notice_id):
     adoption_notice = AdoptionNotice.objects.get(id=adoption_notice_id)
     context = {"adoption_notice": adoption_notice}
@@ -33,6 +54,7 @@ def search(request):
     return render(request, 'fellchensammlung/search.html', context=context)
 
 
+@login_required
 def add_adoption(request):
     if request.method == 'POST':
         form = AdoptionNoticeForm(request.POST, request.FILES)
@@ -45,6 +67,7 @@ def add_adoption(request):
     return render(request, 'fellchensammlung/forms/form_add_adoption.html', {'form': form})
 
 
+@login_required
 def add_animal_to_adoption(request, adoption_notice_id):
     if request.method == 'POST':
         form = AnimalForm(request.POST)