CODEWITHSUNDEEP
pythonhtmldjango
Fanna1119
Fanna1119

Reputation: 2288

Django for loop in html template not displaying

So I am trying to get the latest post and I ran into a problem where it will not display the post

views.py

def latest_post(request):
    latest = Post.objects.all().order_by('-id')[:1]
    context = {'latestPost': latest}
    return render(request, 'latest_post.html', context)

Note: I also tried it with this, latest = Post.objects.all()

There are entries in the database, I tested with the shell

from blog.models import Post
>>> Post.objects.all()
<QuerySet [<Post: test>, <Post: okay so>, <Post: okay-okay>]>

latest_post.html

{% for newest in latestPost %}
<section class="hero is-primary is-medium">
  <div class="hero-body header">
    <div class="container">
     <div class="font">
      <h1 class="title is-1">
        <span id="blog_title">{{ newest.title }}</span>
      </h1>
      <h2 class="subtitle is-3 subup">
        <span id="blog-subtitle">{{ newest.content|truncatechars:20|safe }}</span>
      </h2>
      <h2 class="subtitle is-5 dateup">
        <span id="blogdate">{{ newest.timestamp }}</span><br><br>
        <a href="{{ newest.blog_url }}" class="button is-danger is-large is-inverted">Read More >></a>
      </h2>
    </div>
    </div>
  </div>
</section>
{% endfor %}

in my blog_index.html I have the following

{% extends "blog_base.html" %}
{% block blog_main %}
{% load staticfiles %}

{% include 'latest_post.html' %}
<p> other html here </p>
{% endblock %}

Latest_post.html displays when i use {% include 'latest_post.html' %} only if I don't use 

{% for newest in latestPost %}
{% endfor %}

So i am sure there aren't any typos somewhere that prevents the latest_post.html from displaying in my index page.

my models.py

class Post(models.Model):
    title = models.CharField(max_length=120)
    slug = models.SlugField(unique=True)
    content = models.TextField()
    draft = models.BooleanField(default=False)
    publish = models.DateField(auto_now=False, auto_now_add=False)
    updated = models.DateTimeField(auto_now=True, auto_now_add=False)
    timestamp = models.DateTimeField(auto_now=False, auto_now_add=True)

    def __str__(self):
       return self.title

    def blog_url(self):
        return reverse("blogposts:blogdetail", kwargs={"slug": self.slug})

Additional Notes: python3, django 1.11, sqlite. Also, No errors are displayed in the console. any help would be appreciated! thank you!!

Upvotes: 1

Views: 3140

Answers (3)

Gaurav Kumar
Gaurav Kumar

Reputation: 11

I also stuck in the same problem and I was damn confirmed that I was doing any silly mistakes.

Unfortunately, I found one. So, Try this:

context = {'latest': latest}

Instead of:

context = {'latestPost': latest}

I hope it works.

Upvotes: 0

tushortz
tushortz

Reputation: 5005

In your previous code you are limiting it by using [:1] so it only returns one item. Then you are using a forloop again on one item. Not the best way to do things.

Are you trying to get only one item from the post? If yes, Forloop is not needed change your latest_post.html to 

<section class="hero is-primary is-medium">
  <div class="hero-body header">
    <div class="container">
     <div class="font">
      <h1 class="title is-1">
        <span id="blog_title">{{ latestPost.title }}</span>
      </h1>
      <h2 class="subtitle is-3 subup">
        <span id="blog-subtitle">{{ latestPost.content|truncatechars:20|safe }}</span>
      </h2>
      <h2 class="subtitle is-5 dateup">
        <span id="blogdate">{{ latestPost.timestamp }}</span><br><br>
        <a href="{{ latestPost.blog_url }}" class="button is-danger is-large is-inverted">Read More >></a>
      </h2>
    </div>
    </div>
  </div>
</section>

You don't even need to use the [:1] in your views. There are better ways to do this

Upvotes: 0

neverwalkaloner
neverwalkaloner

Reputation: 47354

Looks like you are passing context variable to latest_post.html directly:

return render(request, 'latest_post.html', context)

But there is no such context variable latestPost in blog_index.html. What you need to do is add context to blog_index.html. Add this to index view also:

latest = Post.objects.all().order_by('-id')[:1]
context = {'latestPost': latest}
return render(request, 'blog_index.html', context)

Also you can use first to select first element in queryset.

Upvotes: 1

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