adding custom classes for tables

3 comments

1. In your case you need to add custom hook for the_content filter:

   add_filter( 'the_content', 'wpse8170_add_custom_table_class' );
   function wpse8170_add_custom_table_class( $content ) {
       return str_replace( '<table>', '<table class="mycustom-class">', $content );
   }
   

   Add this snippet to your functions.php file.

2. I made a simple modification to get the code recognize other styles within the tag:

   add_filter( 'the_content', 'wpse8170_add_custom_table_class' );
   function wpse8170_add_custom_table_class( $content ) {
   return str_replace( '<table', '<table class="my-class"', $content );
   }
   

3. There is no table functionality in the default editors, visual or text, so unless are using an editor like CKEditor that does generate that markup, I’d use a shortcode.

   function table_wrapper_wpse_114253( $atts, $content = null ) {
     return '<table class="abc xyz">'.$content.'</table>';
   }
   add_shortcode('table','table_wrapper_wpse_114253');
   

   In your content, just write [table]...[/table] instead of <table>...</table>

   I have to add that if your theme uses body_class and post_class correctly, and all you want to do is add a class to every <table> in the post body, there is almost certainly existing markup in place that makes what you are doing unnecessary, whether you use a filter on the_content as @EugeneManuilov suggests or a shortcode.

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