Overriding blocks within included Twig templates

Question

Is there a generally "good" way to achieve this functionality? I have read about the 'use' tag, which seems like the best option so far, but I still don't like that it wont let me bring in any outside html, only blocks.

I will use the 'include' tag in the example below to demonstrate the intent I'm trying to describe.

#base.html.twig {% include 'elements/header.html.twig' %} {% block content %}{% endblock %} {% include 'elements/footer.html.twig' %}  #header.html.twig <h1>This is my header</h1> {% block page_title %} Default Page Title {% endblock %}  #index.html.twig {% extends 'layouts/base.html.twig' %} {# I want to be able to do this somehow #} {% block page_title %} This is my overridden page title {% endblock %} {% block content %} here is the index page content {% endblock %} 

Answer 1

I found a solution. Use the block() function to get the child's block content and pass it to header.html.twig as a variable in the include statement:

#base.html.twig {% include 'elements/header.html.twig' with {page_title: block('page_title')} %} {% block content %}{% endblock %} {% include 'elements/footer.html.twig' %}  #header.html.twig <h1>This is my header</h1> {% if page_title is empty %} Default Page Title {% else %} {{ page_title }} {% endif %}  #index.html.twig {% extends 'layouts/base.html.twig' %} {% block page_title %} This is my overridden page title {% endblock %} {% block content %} here is the index page content {% endblock %}