CODEWITHSUNDEEP
django
FrostFox
FrostFox

Reputation: 35

Template tag variables at django are not displayed

I’m building a blog and I’m new to django. I’m trying to build a post display page but tag variables are not working.

urls.py

urlpatterns = [
.
.
.

    path('post/<slug>/', views.post_detail, name='post_detail'),
]

views.py

.
.
.
def post_detail(request, slug):
    all_posts= Post.objects.all()
    this_post = Post.objects.filter(post_slug=slug)
    return render(request = request, 
    template_name = 'blog/post_detail.html', 
    context = {'this_post':this_post, 'all_posts':all_posts})
.
.
.

post_detail.html

{% extends 'blog/header.html' %}

{% block content %}
  <div class="row">
    <div class="s12">
      <div class="card grey lighten-5 hoverable">
        <div class="card-content teal-text">
            <span class="card-title">{{  this_post.post_title  }}</span>
            <p style="font-size:70%">Published {{  this_post.post_published  }}</p>
            <p>{{  this_post.post_content  }}</p>
        </div>
       </div>
    </div>
{% endblock %}

Thanks from now!

Upvotes: 1

Views: 52

Answers (2)

Michał
Michał

Reputation: 504

this_post is not a Model instance - it's a Queryset. Post.objects.filter() always returns a Queryset, even if there's only one record. Attribute post_title is an attribute of Post instance - not of a queryset.

You can do either:

  1. use get(): 
Post.objects.get(post_slug=slug)
  1. ...or add first() to the queryset:
Post.objects.filter(post_slug=slug).first()

What's the difference?

  1. get() will return an instance or raise Post.DoesNotExist exception if Post is not found.
  2. filter(...).first() will return first result from queryset (as model instance) or None, if nothing was found.

Upvotes: 0

bmons
bmons

Reputation: 3392

instead of filtering, need to bring out single object then only it will be available in detail view. Output of filer will be a list.

this_post = Post.objects.get(post_slug=slug)

or

this_post = get_object_or_404(Post, post_slug=slug)

Upvotes: 1

Related Questions