Django templates inheritance - django

For example:
base.html
<body>
{% block content}
{% endblock %}
</body>
base_index.html
{% extends 'base.html' %}
{% block content %}
something
{% endblock %}
# add new block "for_child" to fill in with next inheritance
<h1>Name:
{% block for_child %}
{% endblock %}</h1>
base_index_child.html
{% extends 'base_index.html' %}
{% block for_child %}
Peter
{% endblock %}
Result base_index_child.html:
<body>
something
</body>
But i want (base.html -> base_index.html -> base_index_child.html)
<body>
something
<h1>Name: Peter</h1>
</body>
How to get this?
Update (answer)
Adding a block must be inside the block
base_index.html
{% extends 'base.html' %}
{% block content %}
something
<h1>Name:
{% block for_child %} # block must be inside the block
{% endblock %}</h1>
{% endblock %}

This post is pretty much what you're asking.
So this would fix it:
base_index.html
{% extends 'base.html' %}
{% block content %}
something
<h1>Name:
{% block for_child %}
{% endblock %}
</h1>
{% endblock %}

Related

Is it okay to have two base.html templates in django?

Is it okay to have multiple base.html templates in django? For instance, I would have one template that would extend from base_one.html and another template extending from base_two.html. For example, this is one of the templates:
{% extends "base_one.html" %}
{% block content %}
{% endblock content %}
and this is another template:
{% extends "base_two.html" %}
{% block content %}
{% endblock content %}
Well not only two you can keep how much you want just with different names and you have to extend on different templates but yeah you can easily keep parts of the base template and extend in one according to your needs.
I'm adding three files here 1-base.html 2-base-comments.html 3-post-template.html
Here is a little expansion of my answer
Suppose this file name is base.html
# base.html
<html>
<head>
<title>Foo</title>
</head>
<body>
<header>
{% block header %}
<h1>Lorem ipsum</h1>
{% endblock %}
</header>
{% block content %}{% comment %}A wrapper around content is needed{% endcomment %}
<div class="page-content">
{% block page_content %}{% comment %} Filled in by your page templates {% endcomment %}
{% endblock %}
</div>
{% endblock %}
<footer>
{% block footer %}
<em>♥ joar</em>
{% endblock footer %}
</footer>
</body>
</html>
here is another file base-comments.html which extends the previous file.
# base-comments.html
{% extends 'base.html' %}
{% block content %}
<div class="page-content">
{% block page_content %}{% comment %} Filled in by your page templates {% endcomment %}
{% endblock %}
{% block comments %}
<footer>
<h2>Comments</h2>
<script>loadCommentsEtc()</script>
</footer>
{% endblock %}
</div>
{% endblock %}
And here is the last file which extends the 2nd base file which already extends the 1st base file 3-post-template.html
# post-template.html
{% extends 'base-comments.html' %}
{% block page_content %}
<article>
<h1>{{ post.title }}</h1>
<div class="post-body">
{{ post.body }}
</div>
</article>
{% endblock %}
I hope this works and clears your doubts.
Thanks for the question.

Nesting Django block with {% include %}

I am trying to nest blocks with Django 3. I have sections of html that are sometimes reused on a page. I don't think I would have to resort to duplicating templates, but I can't get it to work;
I have this template
{% extends 'base.html' %}
{% include 'site_part.html' %}
{% block content %}
Some Content
<br>
And here I insert the child content
{% block part_of_site %}
{% endblock %}
{% endblock %}
And the site_part_html is like this;
{% block part_of_site %}
Okay, i am loaded!
{% endblock %}
In the base.html I have only this:
{% block content %}
{% endblock %}
I'd expect it to render the "Okay, i am loaded!" string in the resulting page, in the content block. However, it remains empty. I've looked, but most examples are far more advanced then what I need and I can't get those to work either.
If I remove the extends statement at that start and the block content lines, it does load the included html.
Basically, I have a site part that sometimes is need, and I'd like to included that based on some templating. Otherwise, I'd have duplicate that code for each of the pages that it occurs on.
You may call the content from the block 'part_of_site' in any child template using {{ block.super }} like this:
{% extends 'site_part.html' %}
{% block content %}
Some Content
<br>
{% block part_of_site %}
{{ block.super }}
{% endblock %}
{% endblock %}
You should use {% extends 'base.html' %} in the 'site_part.html' template. All children of 'site_part.html' will also be a descendant of base.html
{% extends 'base.html' %}
{% block part_of_site %}
Okay, i am loaded!
{% endblock %}
If you want to use {% include %} instead, change your code like this:
{% extends 'base.html' %}
{% block content %}
Some Content
<br>
{% include 'site_part.html' %}
{% endblock %}
You need to move your {% include 'site_part.html' %} into the {% block content %} block.
content.html
{% extends 'base.html' %}
{% block content %}
Some Content
<br>
And here I insert the child content
{% include 'site_part.html' %}
{% block part_of_site %}
{% endblock %}
{% endblock %}
Then, in your view you need to return your content template. I named it content.html here.
def your_view(request):
return render(request, "content.html")
You can put the include anywhere inside the content block, it doesn't have to be right before the part_of_site block.

Django overwrite parts in inherited templates

I have set up the following templates
base.html
{% extends 'base/main_base.html' %}
{% block main-content %}
<h1>Header stuff<h1>
...
{% block article-content %}
{% endblock %}
{% endblock %}
article.html
{% extends 'base.html' %}
{% block article-content %}
<h2>Content</h2>
<p>More content</p>
{% endblock %}
Now, I connected a view to the article.html, and I want use the dynamic view data to overwrite the 'header stuff' in the 'base.html' template. Problem is, the view is connected to the article.html, which inherits from the base.
Is there a way to override parts of the base template from the child template?
You could create another template block in your base.html
{% extends 'base/main_base.html' %}
{% block main-content %}
<h1>{% block header %}Header stuff{% endblock %}<h1>
...
{% block article-content %}
{% endblock %}
{% endblock %}
and overwrite the block in your article.html
{% extends 'base.html' %}
{% block header %}My overwritten headline{% endblock %}
{% block article-content %}
<h2>Content</h2>
<p>More content</p>
...
{% endblock %}
You could also check, in base.html, if a "header" value is injected to the template from the article (or any other view):
base.html
{% extends 'base/main_base.html' %}
{% block main-content %}
<h1>
{% if header %}
{{ header }}
{% else %}
Header stuff
{% endif %}
<h1>
...
{% block article-content %}
{% endblock %}
{% endblock %}

Reuse same "block" of html in multiple django templates

Currently, I have two html template that extends from a base.html:
page1.html:
{% extends 'dashboard/base.html' %}
{% block tittle %} Dashboard1 {% endblock %}
... code ...
Code_block_1
{% endblock %}
page2.html:
{% extends 'dashboard/base.html' %}
{% block tittle %} Dashboard2 {% endblock %}
... code ...
Code_block_1
{% endblock %}
Both html share the same Code_block_1.
I was thinking about about creating another html called Code_block_1.html to consolidate this repeating piece of code. Then, insert Code_block_1.html into page1.html and pag2.html. Django only lets you extend once. How do I get around this problem?
Thanks.
Simply create another HTML file called code_block_1.html and then inside both page1.html and page2.html use include like this:
<!-- page1.html -->
{% extends 'dashboard/base.html' %}
{% block tittle %} Dashboard1 {% endblock %}
... code ...
{% include 'code_block_1.html' %}
{% endblock %}
<!-- page2.html -->
{% extends 'dashboard/base.html' %}
{% block tittle %} Dashboard2 {% endblock %}
... code ...
{% include 'code_block_1.html' %}
{% endblock %}

Strip HTML from Django template block?

In my Django base.html template I have a title block:
<html>
<head>
<title>{% block title %}{% endblock %}</title>
</head>
<body>
{% block content %}
{% endblock %}
</body>
</html>
In a page template I use the text from its <h1> page title in that block, so it also appears in the <title> tag, e.g.:
{% extends 'base.html' %}
{% block content %}
<h1>{% block title %}Hello world!{% endblock %}</h1>
{% endblock %}
That all works fine. But if I want to use HTML tags within the page's <h1> like this...
{% extends 'base.html' %}
{% block content %}
{% block title %}<b>Hello</b> world!{% endblock %}
{% endblock %}
...those tags will also appear in the <title>, which isn't allowed.
Is there a way around this other than having two versions of the title: one within <h1>, and one HTML-free version within a {% block title %}? I don't think there's a way to strip HTML from a block?
You could use cycle like so:
{% extends 'base.html' %}
{% block content %}
<h1>
{% block title %}
{% cycle '' '<b>' %}Hello world!{% cycle '' '</b>' %}
{% endblock %}
</h1>
{% endblock %}
Hope this helps