updated views, url and created template for add new announcement page

widget_princessgabi/announcementboard/templates/announcementboard/announcement-add.html

+{% extends 'base.html' %}
+
+{% block title %} Add Announcement {% endblock %}
+{% block header %} 
+    <h1> Add a new announcement: </h1> 
+{% endblock %}
+{% block body %} 
+<form method='POST'>
+    {% csrf_token %}
+    {{ form }}
+    <input type="Submit" value="Add Announcement">
+</form>
+{% endblock %}
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widget_princessgabi/announcementboard/urls.py

 from django.urls import path
 from . import views
+from .views import (AnnouncementsCreateView,
+        )
 
 urlpatterns = [
     path('', views.announcement_view, name='announcements'),
+    path('announcements/add/', AnnouncementsCreateView.as_view(), name='announcement-add'),
+
 ]

widget_princessgabi/announcementboard/views.py

 from django.http import HttpResponse
 from django.shortcuts import render
 
+from django.views.generic.edit import CreateView
+
 from .models import Announcement, Reaction
 
 def announcement_view(request):
@@ -9,3 +11,8 @@ def announcement_view(request):
         'announcements': announcements
     }
     return render(request, 'announcementboard/announcements.html', context)
+
+class AnnouncementsCreateView(CreateView):
+    model = Announcement
+    template_name = 'announcementboard/announcement-add.html'
+    fields = '__all__'
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