The extends Tag
In the previous pages we created two templates, one for listing all members, and one for details about a member.
The templates have a set of HTML code that are the same for both templates.
Django provides a way of making a "parent template" that you can include in all pages to do the stuff that is the same in all pages.
Start by creating a template called master.html, with all the necessary HTML elements:
Master
<!DOCTYPE html>
<html>
<head>
<title>{% block title %}{% endblock %}</title>
</head>
<body>
{% block content %}
{% endblock %}
</body>
</html>
Do you see Django block Tag inside the <title> element, and the <body> element?
They are placeholders, telling Django to replace this block with content from other sources.
Modify Templates
Now the two templates (all_members.html and details.html) can use this master.html template.
This is done by including the master template with the {% extends %} tag, and inserting a title block and a content block:
Members
{% extends "master.html" %}
{% block title %}
My Tennis Club - List of all members
{% endblock %}
{% block content %}
<h1>Members</h1>
<ul>
{% for x in mymembers %}
<li><a href="details/{{ x.id }}">{{ x.firstname }} {{ x.lastname }}</a></li>
{% endfor %}
</ul>
{% endblock %}
Details
{% extends "master.html" %}
{% block title %}
Details about {{ mymember.firstname }} {{ mymember.lastname }}
{% endblock %}
{% block content %}
<h1>{{ mymember.firstname }} {{ mymember.lastname }}</h1>
<p>Phone {{ mymember.phone }}</p>
<p>Member since: {{ mymember.joined_date }}</p>
<p>Back to <a href="/members">Members</a></p>
{% endblock %}
If you have followed all the steps on your own computer, you can see the result in your own browser: 127.0.0.1:8000/members/.
If the server is down, you have to start it again with the runserver command:
python manage.py runserver
