render data in html with templateView django - django-views

Question

How can I render the data in from the model to the html? The way they describe it in the docs doesn´t work for me. Here is what I have:
class Thema(models.Model):
title = models.CharField(max_length=70, help_text="The title of the Post")
publication_date = models.DateField(verbose_name="Date the Post was published.")
text = models.TextField(max_length=5000,default='kein Textinhalt vorahnden')
category = models.ForeignKey(Category, on_delete=models.CASCADE)
bilder = models.ForeignKey(Bilder, on_delete=models.CASCADE)
links = models.ManyToManyField(Link)
files = models.ManyToManyField(File)
tags = models.ManyToManyField(Tag)
def __str__(self):
return self.title
The View:
from .models import Thema
from django.views.generic import TemplateView
class HomePageView(TemplateView):
model = Thema
context_object_name = 'themas'
template_name = "home/home.html"
And the template:
<h2>THEMAS</h2>
<ul>
{% for thema in themas %}
<li>{{ thema.title }}</li>
{% endfor %}
</ul>
How can I render the many to many fields?
thanks for answers

Answer 1

Your template assumes that themas is a list. But themas is actually only one model instance of Thema.
class HomePageView(TemplateView):
model = Thema # model is Thema
context_object_name = 'thema' # 'themas' is missleading --> change to 'thema'
# because this view only passes ONE Thema to the view
template_name = "home/home.html"
<h1>Thema: {{ thema.title }}</h1>
<h3>Links:</h3>
{% for link in thema.links.all %}
<li>{{ link }}</li>
{% endfor %}
<h3>Tags:</h3>
{% for tag in thema.tags.all %}
<li>{{ tag }}</li>
{% endfor %}