formview django

from myapp.forms import ContactForm
from django.views.generic.edit import FormView

class ContactView(FormView):
    template_name = 'contact.html'
    form_class = ContactForm
    success_url = '/thanks/'

    def form_valid(self, form):
        # This method is called when valid form data has been POSTed.
        # It should return an HttpResponse.
        form.send_email()
        return super().form_valid(form)

###### views.py #####
from .models import Article
from .forms import  UpdateArticleForm
from django.views.generic import UpdateView
class ArticleUpdateView(UpdateView):
    model = Article
    form_class = UpdateArticleForm
    template_name = 'articles/create_article.html'
    
###### urls.py  ######
from .views import ArticleUpdateView
urlpatterns =[ 
  path('articles/<int:pk>/update/', ArticleUpdateView.as_view()),]
# pk is default value (for primary key of id of an instance of object