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Python Django Class-based Views Customizing Class-based Views Override get_queryset

Y B
Y B
14,136 Points
Posted by Y B
Y B
14,136 Points

Django CBV custom queryset

Hmm this is hard. Not sure why this doesn't pass the challenge.

articles/views.py 
from django.views import generic

from . import models


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


class ArticleDetail(generic.DetailView):
    model = models.Article


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


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


class ArticleDelete(generic.DeleteView):
    model = models.Article


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

   def get_queryset(self):
        if self.kwargs['term']:
            return self.model.objects.filter(body_icontains=self.kwargs['term'])
        return EmptyQuerySet

3 Answers

Tatiana Vasilevskaya
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Tatiana Vasilevskaya
Python Web Development Techdegree Graduate 28,600 Points
Tatiana Vasilevskaya
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Tatiana Vasilevskaya
Python Web Development Techdegree Graduate 28,600 Points

If the term is blank, you need to return self.model.objects.none(), which is an instance of an EmptyQuerySet (none() docs)

Also, for field lookups you need two underscores body__icontains=self.kwargs['term']

Tatiana Vasilevskaya
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Tatiana Vasilevskaya
Python Web Development Techdegree Graduate 28,600 Points
Tatiana Vasilevskaya
.a{fill-rule:evenodd;}techdegree seal-36
Tatiana Vasilevskaya
Python Web Development Techdegree Graduate 28,600 Points

There are some issues with your code. You are supposed to search for articles with a certain term in their body, however you are searching for articles, which body is equal to the lowercased term. You may want to consider using icontains for this.

Your get_queryset method always returns None. Actually, it can't return None at all. Check the docs

Also, it should be self.model in the method, not just model

Y B
Y B
14,136 Points
Y B
Y B
14,136 Points

Thanks, I've updated my code above. But I'm unsure whether I should return an EmptyQuerySet or just an empty list. Unfortunately I couldn't get either to work?

leakedmemory
leakedmemory
10,868 Points
leakedmemory
leakedmemory
10,868 Points

@ Y B did you solve the your issue?
I just got it to pass. 

def get_queryset(self):
    term = self.kwargs['term']:
    if not term:
        return self.model.objects.none()
    else:
        return self.model.objects.filter(body__icontains=term)

As noted above, use two underscores between body and icontains.

Good Luck!