Add assets on Twig include

Hello,

I have a page using a Twig include to a partials/some-content.html.twig and in this file I want to load a specific js script.
I tried this way:

{# page.html.twig #}

{% extends 'partials/base.html.twig' %}

{% block content %}
    <div class="container">
        {% include "partials/some-content.html.twig" %}
    </div>
{% endblock %}

{# partials/some-content.html.twig #}

{% do assets.addJs("https://some.cdn/some-script.js") %}

<div class="some-content"></div>

But the script https://some.cdn/some-script.js is not added to the page.

Is there a special way to add the script in this case ?

I will add this to the cookbook, but here is an explanation about how to add asset on a specific page.

Basically, you need to extend the block that has all your js and call parents.
Here is a link: https://github.com/paulmassen/grav-collection#add-a-css-or-js-file-on-a-specific-page

Thanks for your answer.

I have to do the assets.addJs() in page.html.twig with your explanation, but if I have:

{# page.html.twig #}

{% extends 'partials/base.html.twig' %}

{% block content %}
    <div class="container">
        {% if condition %}
            {% include "partials/some-content1.html.twig" %}
        {% else%}
            {% include "partials/some-content2.html.twig" %}
        {% endif %}
    </div>
{% endblock %}

with partials/some-content1.html.twigand partials/some-content2.html.twig requiring 2 differents JS (not the same), how can I avoid to load useless JS ?
Did I have to duplicate the condition in page.html.twig in my JS block ?

I can add assets in markdown using the shortcode assets plugin. This seems very inelegant. Is there a better approach?