getting HTML element data attributes in DOMCrawler

[tacman]

I know it's possible to get a single data attribute from the DOM Crawler with

                $blocks->each(function (Crawler $node, $i) use ($componentHtml) {
                    $el = $node->attr('data-element');
                    // $elData = $node->data(); // this doesn't work.
}

but is there a way to get an array of all the data attributes, like javascripts el.dataset? I guess I could iterate over all the children and extract the ones beginning with data-, but I'm wondering if there's already a tool to do that. Or maybe DOMCrawler isn't the right component to use?

[MatTheCat]

Iterating over attributes is trivial so I’m not sure you’d need a dedicated tool. I guess you could try adding the crawler this functionality in a PR.

[tacman]

how do I iterative over all the attributes in the DOM crawler? I could then look for 'data-' and populate an array. I'm sure it's trivial, but I can't seem to find it. I still find domNode and domElement confusing.

[MatTheCat]

The crawler exposes a getNode method returning a DOMNode, which exposes an $attributes property yielding DomAttrs:

foreach ($crawler->getNode(0)->attributes as $attribute) {
    dump($attribute->name, $attribute->value);
}

[tacman]

Thanks!