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Add doc about how to get a link by its id or class attribute in DOM crawler page #12141

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Sep 18, 2019
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Add doc about how to get a link by its id or class attribute in DOM crawler page #12141

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26 changes: 19 additions & 7 deletions components/dom_crawler.rst
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Expand Up @@ -370,16 +370,28 @@ This behavior is best illustrated with examples::
Links
~~~~~

To find a link by name (or a clickable image by its ``alt`` attribute), use
the ``selectLink()`` method on an existing crawler. This returns a ``Crawler``
instance with just the selected link(s). Calling ``link()`` gives you a special
:class:`Symfony\\Component\\DomCrawler\\Link` object::
To find a link by its ``id`` or its ``class`` attribute(s), use the ``filter()``
method on an existing crawler. To find a link by name (or a clickable image by
its ``alt`` attribute), use the ``selectLink()`` method on an existing crawler.
This returns a ``Crawler`` instance with just the selected link(s). Calling
``link()`` gives you a special :class:`Symfony\\Component\\DomCrawler\\Link` object::

$linksCrawler = $crawler->selectLink('Go elsewhere...');
$link = $linksCrawler->link();
// select the link by its id
$linksByIdCrawler = $crawler->filter('#your-link');
$link = $linksByIdCrawler->link();

// select the link by its class
$linksByClassCrawler = $crawler->filter('.link');
$link = $linksByClassCrawler->link();

// select the link by its name
$linksByNameCrawler = $crawler->selectLink('Go elsewhere...');
$linkByName = $linksCrawler->link();

// or do this all at once
$link = $crawler->selectLink('Go elsewhere...')->link();
$linkById = $crawler->filter('#your-link')->link();
$linkByClass = $crawler->filter('.link')->link();
$linkByName = $crawler->selectLink('Go elsewhere...')->link();

The :class:`Symfony\\Component\\DomCrawler\\Link` object has several useful
methods to get more information about the selected link itself::
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