django sekizai {% addtoblock %} tag is not working properly

Question

I'm trying to implement django sekizai app. It is duplicating the js files that i'm adding.

base template:

{% load sekizai_tags %}
...
{% render_block "my_js" %}

template that is using this base:

{% load sekizai_tags %}
<div id="a1" >
    {% addtoblock "my_js" %}
        <script type="text/javascript" src="{{ MEDIA_URL }}js/my_js.js"></script>
    {% endaddtoblock %}
</div>
{% addtoblock "my_js" %}
    <script type="text/javascript" src="{{ MEDIA_URL }}js/my_js.js"></script>
{% endaddtoblock %}

Now here the rendered template has rendered twice.But when I tried adding the same script within the div it wasn't duplicated. Would appreciate if someone can shed some light on this!

Also when i try to use {% addtoblock %} in a template rendered by a template tag the script goes missing (It is neither included nor it stays in that template).

Note: The template tags, render_block and addtoblock, are from the django-sekizai package.

well i could find the reason behind the duplication of my script which is the difference in the indentation of the script within and outside the div. {% addtoblock %} tag apparently doesn't remove the white-spaces. So the solution to my first question is a silly one as below: {% load sekizai_tags %}
{% addtoblock "my_js" %}{% endaddtoblock %}
{% addtoblock "my_js" %}{% endaddtoblock %} — Vikas Gulati, Mar 21 '12 at 17:27
Also in custom template tag's template the scripts were disappearing. As per [django-sekizai-docs](https://github.com/ojii/django-sekizai/blob/master/docs/restrictions.rst) it is compulsory to use either SekizaiContext or RequestContext and the sekizai context processor but i found a workaround if you want to size down your template's context(say cont={}) use this cont['SEKIZAI_CONTENT_HOLDER'] = context['SEKIZAI_CONTENT_HOLDER']. With this workaround you need not use RequestContext and only sekezai context processor would be enough. — Vikas Gulati, Mar 21 '12 at 19:54

Brandon Taylor · Accepted Answer · 2015-12-04T03:27:17.293

29

{% addtoblock %} and {% endaddtoblock %} have to be inside of a block in templates that inherit another template.

# base.html
<html>
    ...
    {% render_block 'js' %}
    {% block js %}{% endblock %}
</html>


# some-page.html
{% inherits 'base.html' %}

{% block js %}
    {% addtoblock 'js' %}
        <script type="text/javascript" ... />
    {% endaddtoblock %}
{% endblock %}

Hope that helps you out.

edited Dec 04 '15 at 03:27

answered Mar 21 '12 at 19:00

Brandon Taylor

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It will not work. the sekizai will parse it as "\n(8 spaces)" and not "". – Vikas Gulati Mar 21 '12 at 19:40
That works for me. I'm not sure what might be going on with the newline character and spaces, but I've used the same code I posted on at least 10 projects that all work as expected. Perhaps there's something else altering the output? – Brandon Taylor Mar 21 '12 at 20:12
Yep, this fixed it up. But *why* is this the case? I presume it's a limitation of Django's template system? – Chris Morgan Sep 05 '13 at 10:53
I'm not certain, I was just following the documentation. – Brandon Taylor Sep 05 '13 at 17:15

score 7 · Answer 2 · answered Dec 04 '15 at 03:50

{% addtoblock %} inside the template (something.html) from an inclusion tag:

from django import template
from django.conf import settings

register = template.Library()

@register.inclusion_tag('something.html', takes_context=True)
def render_something(context, some_arg):
    sezikai_ctx_var = getattr(settings, 'SEKIZAI_VARNAME', 'SEKIZAI_CONTENT_HOLDER')
    attrs = {
        'some_arg': some_arg,
        sezikai_ctx_var: context[sezikai_ctx_var]
    }
    return attrs

Very useful - is this documented anywhere? – petr Apr 14 '17 at 10:13 — petr, Apr 14 '17 at 10:13

django sekizai {% addtoblock %} tag is not working properly

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