Re: Cascading Types in a Meta Tag

Perfect, Dan — thanks.  Your various options, and the simple use of <span>, are very constructive thoughts.

— rob


On Oct 24, 2013, at 1:19 PM, Dan Scott <dan@coffeecode.net> wrote:

> On Thu, Oct 24, 2013 at 9:50 AM, Robert Kost <rkost@thematix.com> wrote:
>> Hi
>> 
>> Dumb question #347:
>> 
>> How does one nest RDFa type declarations in a <meta> tag?
>> 
>> For example, the copyrightHolder of a CreativeWork is an Organization.
>> Since the copyright holder isn’t explicitly stated on the page, it has to be
>> declared in a <meta> tag.   But this doesn’t look right:
>> 
>> <div id="namespaces" prefix="schema: http://schema.org/ “>
>> 
>> <div typeof="schema:VideoObject”>
>> <meta property="copyrightHolder" typeof="schema:Organization"
>> property="name" content=“Some Company"/>
>> ...
>> </div>
>> </div>
>> 
>> 
>> I know this is elementary stuff, but a fair amount of googling around failed
>> to provide an answer, so I look to someone here.
>> 
> 
> The best option would probably be to publish a URL about "Some
> Company" that you could link to directly, for example:
> 
> <div vocab="http://schema.org/" typeof="VideoObject">
>   <link property="copyrightHolder" href="http://example.com/some_company" />
> </div>
> 
> That way you wouldn't have to bloat your markup with copies of
> properties on every page, and updating info about "Some Company" would
> be handled by changing a single page. But, I assume you've already
> looked into that as an option, so if you have to go inline...
> 
> Nesting it in a span tag, with a meta tag inside, seems to work... for example:
> 
> <div vocab="http://schema.org/" typeof="VideoObject">
>  <span property="copyrightHolder" typeof="Organization">
>    <meta property="name" content="Some Company"/>
>  </span>
> </div>
> 
> Tested in http://rdfa.info/play and
> http://www.google.com/webmasters/tools/richsnippets?q=uploaded:8004e97fb53580b319d78cd8b549a58b
> for what that's worth.
> 
> Alternately, you could go beyond RDFa Lite and use the @about attribute like so:
> 
> <div vocab="http://schema.org/" typeof="VideoObject">
>  <meta property="copyrightHolder" typeof="Organization" resource="#foobar">
>  <meta property="name" content="Some Company" about="#foobar"/>
> </div>
> 
> That tests out fine in http://rdfa.info/play but the Rich Snippets
> tool doesn't like it very much, which isn't much of a surprise as
> schema.org only declares support for RDFa Lite -- however, there are
> certainly times I _wish_ @about was supported.




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Robert Kost
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