Pra. 9

news/settings.py

@@ -38,6 +38,9 @@ INSTALLED_APPS = [
     'django.contrib.messages',
     'django.contrib.staticfiles',
     'posts.apps.PostsConfig',
+    'rest_framework',
+    'channels',
+    'django_eventstream',
 ]
 
 MIDDLEWARE = [
@@ -48,6 +51,8 @@ MIDDLEWARE = [
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
+    'django_grip.GripMiddleware',
+    'django.middleware.security.SecurityMiddleware',
 ]
 
 ROOT_URLCONF = 'news.urls'
@@ -105,7 +110,7 @@ AUTH_PASSWORD_VALIDATORS = [
 # Internationalization
 # https://docs.djangoproject.com/en/2.2/topics/i18n/
 
-LANGUAGE_CODE = 'en-us'
+LANGUAGE_CODE = 'de-de'
 
 TIME_ZONE = 'UTC'
 
@@ -120,3 +125,6 @@ USE_TZ = True
 # https://docs.djangoproject.com/en/2.2/howto/static-files/
 
 STATIC_URL = '/static/'
+
+WSGI_APPLICATION = 'posts.wsgi.application'
+ASGI_APPLICATION = 'posts.routing.application'

news/urls.py

@@ -1,9 +1,15 @@
 from django.contrib import admin
 from django.urls import path, include
 
+
+
+
+
 urlpatterns = [
     path('posts/', include('posts.urls')),
     path('admin/', admin.site.urls),
+
+
 ]
 
 

posts/forms.py

@@ -0,0 +1,13 @@
+from django import forms
+import datetime
+
+class NoticeForm(forms.Form):
+    date_formats = ['%d.%m.%Y', '%d.%m.%y']
+    title = forms.CharField(label='Titel', max_length=80)
+    text = forms.CharField(label='Text', max_length=400)
+    start = forms.DateField(label='Von',
+                            input_formats=date_formats,
+                            initial=datetime.date.today)
+    end = forms.DateField(label='Bis',
+                          input_formats=date_formats,
+                          initial=datetime.date.today)

posts/routing.py

@@ -0,0 +1,23 @@
+from channels.routing import ProtocolTypeRouter, URLRouter
+from django.urls import re_path
+from channels.routing import URLRouter
+from channels.http import AsgiHandler
+from channels.auth import AuthMiddlewareStack
+import django_eventstream
+
+urpatterns = [
+    re_path(r'events/',
+            AuthMiddlewareStack(URLRouter(django_eventstream.routing.urlpatterns)),
+            {'channels': ['notice']}),
+
+    re_path(r'', AsgiHandler),
+
+
+
+
+]
+
+application = ProtocolTypeRouter({
+    'http' : URLRouter(urpatterns)
+
+})

posts/serializers.py

@@ -0,0 +1,9 @@
+from rest_framework import serializers
+from .models import Notice
+
+class NoticeSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Notice
+        fields = ('id', 'notice_title', 'notice_text', 'pub_start', 'pub_end')
+
+

posts/urls.py

@@ -2,5 +2,9 @@ from django.urls import path
 from . import views
 
 urlpatterns = [
-    path('', views.index, name='index')
+    path('', views.index, name='index'),
+    path('new', views.new, name='new'),
+    path('delete/<int:deleteId>', views.delete, name='delete'),
+    path('notices/', views.notice_list),
+    path('notices/<int:id>/', views.notice_detail),
 ]

posts/views.py

@@ -1,13 +1,84 @@
-from django.shortcuts import render
-from .models import Notice
+from django.shortcuts import render, redirect
+
 from django.utils import timezone
+from .forms import NoticeForm
+from django.http import JsonResponse, HttpResponse
+from .models import Notice
+from .serializers import NoticeSerializer
+from rest_framework.parsers import JSONParser
+from django.views.decorators.csrf import csrf_exempt
+from django_eventstream import send_event
 
 
 
-def index (request):
+
+
+
+
+
+def new(request):
+    if request.method == "POST":
+        form = NoticeForm(request.POST)
+        if form.is_valid():
+            new_notice = Notice(notice_title=form.cleaned_data['title'],
+                               notice_text=form.cleaned_data['text'],
+                               pub_start=form.cleaned_data['start'],
+                               pub_end=form.cleaned_data['end'])
+            new_notice.save()
+            send_event('notice', 'message', new_notice.id)
+            return redirect('index')
+    context = {'form': NoticeForm()}
+    return render(request, 'posts/edit.html', context)
+
+
+def index(request):
     notices = Notice.objects.all()
     notices = notices.filter(pub_start__lte=timezone.now())
     notices = notices.filter(pub_end__gte=timezone.now())
-    context = { "notices" : notices }
+    context = {"notices": notices}
     return render(request, 'posts/index.html', context)
 
+def delete(request, deleteId=None):
+    if deleteId !=None:
+        delNotice = Notice.objects.get(id=deleteId)
+        if delNotice != None:
+            delNotice.delete()
+            return redirect('index')
+
+@csrf_exempt
+def notice_list(request):
+    if request.method == 'GET':
+        notices = Notice.objects.all()
+        serializer = NoticeSerializer(notices, many=True)
+        return JsonResponse(serializer.data, safe=False)
+
+    elif request.method == 'POST':
+        data = JSONParser().parse(request)
+        serializer = NoticeSerializer(data=data)
+        if serializer.is_valid():
+            serializer.save()
+            return JsonResponse(serializer.data, status=201)
+        return JsonResponse(serializer.errors, status=400)
+
+@csrf_exempt
+def notice_detail(request, id):
+    try:
+        notice = Notice.objects.get(id=id)
+    except Notice.DoesNotExist:
+        return HttpResponse(status=404)
+
+    if request.method == 'GET':
+        serializer = NoticeSerializer(notice)
+        return JsonResponse(serializer.data)
+
+    elif request.method == 'PUT':
+        data = JSONParser().parse(request)
+        serializer = NoticeSerializer(notice, data=data)
+        if serializer.is_valid():
+            serializer.save()
+            return JsonResponse(serializer.data)
+        return JsonResponse(serializer.errors, status=400)
+
+    elif request.method == 'DELETE':
+        notice.delete()
+        return HttpResponse(status=204)

requirements.txt

@@ -0,0 +1,4 @@
+channels
+django-eventstream
+
+

templates/base.html

@@ -14,9 +14,21 @@
     <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"
             integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM"
             crossorigin="anonymous"></script>
+
+{%  load static %}
+
+<script src="{% static 'django_eventstream/eventsource.min.js' %}"></script>
+<script src="{% static 'django_eventstream/reconnecting-eventsource.js' %}"></script>
+
+
+
+
+
 </head>
 <body>
 {% block navigation %} Platzhalter {% endblock %}
 {% block content %} Platzhalter {% endblock %}
 </body>
-</html>
+</html>
+
+

templates/posts/edit.html

@@ -0,0 +1,26 @@
+{% extends 'base.html' %}
+
+
+{% block title %}
+    News
+{% endblock %}
+
+
+{% block content %}
+
+    <div class="container">
+
+       <h1>Neue Nachricht</h1>
+            <form method="POST">
+                {% csrf_token %}
+                {{ form.as_p }}
+                <button type="submit" class="save btn btn-default">Speichern</button>
+            </form>
+    </div>
+
+
+
+{% endblock %}
+
+
+

templates/posts/index.html

@@ -6,45 +6,35 @@
 
 {% block content %}
 
+    <script>
+        var es = new ReconnectingEventSource('/events/');
+        es.addEventListener('message', function (e) {console.log(e.data);location.reload();}, false);
+
+
+    </script>
+
     <div class="container">
 
         {% for notice in notices %}
             <h3>{{ notice.notice_title }}</h3>
-        <p>{{ notice.notice_text }}</p>
+                <p>{{ notice.notice_text }}</p>
+                <p>
+                    <a href="{% url 'delete' deleteId=notice.id %}" class="btn btn-danger">
+                    Meldung loeschen</a></p>
         {% endfor %}
 
+
+        <p><a href="{% url 'new' %}" class="btn btn-info" role="button">Neue Nachricht</a></p>
+
+
+
     </div>
 
+
+
+
+
+
+
 {% endblock %}
 
-
-    <!DOCTYPE html>
-<html>
-   <head>
-      <meta charset="utf-8">
-      <title>Navbar Example</title>
-      <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
-   </head>
-   <body>
-
-      <h4>.navbar .navbar-expand-sm</h4>
-
-      <!-- A horizontal navbar that becomes vertical on small screens -->
-      <nav class="navbar navbar-expand-sm bg-dark">
-         <!-- Links -->
-         <ul class="navbar-nav">
-            <li class="nav-item">
-               <a class="nav-link" href="http://th-nuernberg.de">efi-homepage</a>
-            </li>
-            <li class="nav-item">
-               <a class="nav-link" href="http://google.de">Google</a>
-            </li>
-         </ul>
-      </nav>
-
-      <script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
-      <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
-      <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
-   </body>
-</html>
-    <h1> Index der Polls-Applikation</h1>