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Python Django Class-based Views Customizing Class-based Views Custom Mixin

Chris Komaroff
PLUS
Chris Komaroff
Courses Plus Student 14,198 Points
Posted by Chris Komaroff
Chris Komaroff
Courses Plus Student 14,198 Points

Mixins video, Challenge Task 2 of 4, trying to return an attribute from the instance

Question (posted with link to challenge question):

Challenge Task 2 of 4

Now add a get_success_message method to your mixin that returns the success_message attribute from the instance.

articles/mixins.py

from django.contrib import messages

class SuccessMessageMixin:
    # Added this attribute in task '1 of 4'
    success_message = ''

    # Added this method in task '2 of 4'
    def get_success_message(self):
        return self.success_message

Am I misreading the question? He says "from the instance". Is that a clue? I thought he refers to an instance of SuccessMessageMixin, but maybe he refers to a model instance. Maybe I am just making a silly mistake (sorry), or else he is sending me off to study more about mixins. Thanks for any info!

articles/views.py 
from django.contrib.auth.mixins import LoginRequiredMixin
from django.core.urlresolvers import reverse_lazy
from django.views import generic

from . import mixins
from . import models


class ArticleList(generic.ListView):
    model = models.Article


class ArticleDetail(generic.DeleteView, generic.DetailView):
    model = models.Article
    template_name = 'articles/article_detail.html'


class ArticleCreate(LoginRequiredMixin, generic.CreateView):
    fields = ('title', 'body', 'author', 'published')
    model = models.Article


class ArticleUpdate(LoginRequiredMixin, generic.UpdateView):
    fields = ('title', 'body', 'author', 'published')
    model = models.Article


class ArticleDelete(LoginRequiredMixin, generic.DeleteView):
    model = models.Article
    success_url = reverse_lazy('articles:list')


class ArticleSearch(generic.ListView):
    model = models.Article

    def get_queryset(self):
        qs = super().get_queryset()
        term = self.kwargs.get('term')
        if term:
            return qs.filter(body__icontains=term)
        return qs.none()
articles/mixins.py 
from django.contrib import messages

class SuccessMessageMixin:
    # Added this attribute in task '1 of 4'
    success_message = ''

    # Added this method in task '2 of 4'
    def get_success_message(self):
        return self.success_message

1 Answer

Chris Komaroff
PLUS
Chris Komaroff
Courses Plus Student 14,198 Points
Chris Komaroff
Chris Komaroff
Courses Plus Student 14,198 Points

Weird, it works now, I just totally retyped everything. I think copy and paste caused a problem in the challenge. Sorry for false alarm.