Django ListView works but DetailView not displaying Model Data - django

Question

I am helping my daughter with her computing Project for school. It is a simple generic forum type application.
She has a ListView for a model which works fine:
{% extends 'users/main.html' %}
<!-- Here is where our content will begin -->
{% block content %}
<h1>This is posts.html!</h1>
<br/>
{% for obj in object_list %}
<h2>{{ obj.topic }}</h2>
{{ obj.date_posted }}
<br/>
{{ obj.content }}
<br/>
Author: {{ obj.author }}
<br/><br/>
{% endfor %}
{% endblock %}
She then added a DetailView which is simply the same code with the loop removed:
{% extends 'users/main.html' %}
<!-- Here is where our content will begin -->
{% block content %}
<h1>This is posts.html!</h1>
<br/>
{{ obj.id }}
<h2>{{ obj.topic }}</h2>
{{ obj.date_posted }}
<br/>
{{ obj.content }}
<br/>
Author: {{ obj.author }}
<br/><br/>
{% endblock %}
This is then called with a '....post/1/' (post id = 1 does exist (checked via DB Browser and in the ListView) and the path and naming of the template is correct.
Frustratingly, this displays the page but not the details inside the django temp language brackets (object.topic etc)!
When I look at the page source for the section dealing with the detail, I get:
screenshot of page
and the source code looks like so:
<h1>This is posts.html!</h1>
<br/>
<h2></h2>
<br/>
<br/>
Author:
<br/><br/
It is simply ignoring the bracketed templating code - any ideas?

Answer 1

Django DetailView returns 'object' inside context by default.
If you did not change 'context_object_name' variable, then use {{object}} instead of {{obj}}
<h1>This is posts.html!</h1>
<br/>
{{ object.id }}
<h2>{{ object.topic }}</h2>
{{ object.date_posted }}
<br/>
{{ object.content }}
<br/>
Author: {{ object.author }}
<br/><br/>

Answer 2

Really thanks a lot for all of this.
I corrected my template to include 'object' and made it march all conventions to avoid having to send in context information.
It still wouldn't work.
I rebooted localhost repeatedly because it all made no sense.
Finally, I rebooted my daughters PC and immediately, everything worked.
A lesson learned and as a dad helping a 17 year old daughter who did his Computer Science degree 40(!) years ago, another lesson in how complicated and challenging understanding a framework can be.
I must say - it has been fun.
Thanks again,
Howard.