Hi John,

Thanks for the quick reply. Now that you've pointed it out, I can see that:

Div Attr 
<https://hackage.haskell.org/package/pandoc-types-1.17.5.4/docs/Text-Pandoc-Definition.html#t:Attr> 
[Block 
<https://hackage.haskell.org/package/pandoc-types-1.17.5.4/docs/Text-Pandoc-Definition.html#t:Block>
]

Means that a div can have attributes, but

Table [Inline 
<https://hackage.haskell.org/package/pandoc-types-1.17.5.4/docs/Text-Pandoc-Definition.html#t:Inline>
] [Alignment 
<https://hackage.haskell.org/package/pandoc-types-1.17.5.4/docs/Text-Pandoc-Definition.html#t:Alignment>
] [Double 
<https://hackage.haskell.org/package/base-4.11.1.0/docs/Prelude.html#t:Double>
] [TableCell 
<https://hackage.haskell.org/package/pandoc-types-1.17.5.4/docs/Text-Pandoc-Definition.html#t:TableCell>
] [[TableCell 
<https://hackage.haskell.org/package/pandoc-types-1.17.5.4/docs/Text-Pandoc-Definition.html#t:TableCell>
]]

A table does not have that. 

I did look at this page, but my next task is to learn how to read this 
documentation format...!

Looks like I'll need to post-process the HTML output with a separate 
script. 

On Wednesday, 30 January 2019 14:06:54 UTC-5, John MacFarlane wrote:
>
>
> I don't know anything about PHP, but if you look at 
> the API docs for Text.Pandoc.Definition, you'll see 
> that the Table element doesn't have attributes 
> (including class). 
>
> Best you can do is insert it into a Div with 
> attributes. 
>
> Ken Dow <theke...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <javascript:>> writes: 
>
> > Hi, 
> > 
> > I'd like to assign a class to every table in my HTML output. I've got 
> PHP 
> > filters <https://github.com/glassdimly/pandocfilters-php> working but 
> can't 
> > figure out how to manipulate the AST to do what I want. 
> > 
> > Building on an example PHP filter, I have: 
> > 
> > Pandoc_Filter::toJSONFilter(function ($type, $value, $format, $meta) { 
> >     if ('Str' == $type) { 
> >         // use mb_convert_case instead of ucwords so filter works with 
> > unicode 
> >         return mb_convert_case($value, MB_CASE_LOWER, "UTF-8"); 
> >     } 
> >     if ('Table' == $type) { 
> >         $attrs = array('classes' => 'table'); 
> >         // return ??? 
> >     } 
> > }); 
> > 
> > The 'Str' manipulation works as expected, and any code I put into the 
> > 'Table' section is executed, but I can't get started on how to proceed 
> from 
> > there. Any pointers would be very welcome! 
> > 
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