Help with nextSibling(), prevSibling(), isFirst() and isLast()

Muut · September 26, 2014, 10:07am

Hello,

Maybe I’m overlooking something really obvious here, however I’m after some help / examples on how I can use nextSibling, prevSibling etc.

If I attempt to use any of the above methods, like:

page.nextSibling()
page.nextSibling().url
…
etc.

I get a Twig_Error_Runtime thrown up. Any examples or help how I should be using these would be greatly appreciated.

Basically, I’m trying to implement a previous/next article navigation control at the page level.

Thanks!

Muut · September 26, 2014, 1:59pm

I think what you want is more like the navigation we have in the http://learn.getgrav.org site? these previous and next buttons on each page?

If so you can look at that example directly on github:

github.com

getgrav/grav-learn/blob/develop/themes/learn/templates/docs.html.twig

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

{% set progress = page.collection({'items':{'@taxonomy.category': 'docs'},'order': {'by': 'default', 'dir': 'asc'}}) %}

{% block navigation %}
	<div id="navigation">
	{% if not progress.isFirst(page.path) %}
	    <a class="nav nav-prev" href="{{ progress.nextSibling(page.path).url }}"> <i class="icon-left-open"></i></a>
	{% endif %}

	{% if not progress.isLast(page.path) %}
	    <a class="nav nav-next" href="{{ progress.prevSibling(page.path).url }}"><i class="icon-right-open"></i></a>
	{% endif %}
	</div>
{% endblock %}

{% block content %}
    {% include 'partials/page.html.twig' %}
{% endblock %}

Muut · September 26, 2014, 3:03pm

Perfect! thanks again.

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Help with nextSibling(), prevSibling(), isFirst() and isLast()

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