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Document recursive nature of hash attr expansion

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Matt Wildig 2014-02-14 23:16:55 +00:00
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REFERENCE.md
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@ -419,6 +419,16 @@ and the output will be rendered as:
<a data-author_id='123' data-category='7' href='/posts'>Posts By Author</a>
This expansion of hashes is recursive – any value of the child hash that is
itself a hash will create an attribute for each entry, with the attribute name
prefixed with all ancestor keys. For example:
.book-info{:data => {:book => {:id => 123, :genre => 'programming'}, :category => 7}}
will render as:
<div class='book-info' data-book-genre='programming' data-book-id='123' data-category='7'></div>
### Class and ID: `.` and `#`
The period and pound sign are borrowed from CSS. They are used as shortcuts to