Source View: pre_{$taxonomy}_{$field}

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
832      if ( 'edit' == $context ) {
833           $value = apply_filters("edit_term_$field", $value, $term_id, $taxonomy);
834           $value = apply_filters("edit_${taxonomy}_$field", $value, $term_id);
835           if ( 'description' == $field )
836                $value = format_to_edit($value);
837           else
838                $value = attribute_escape($value);
839      } else if ( 'db' == $context ) {
840           $value = apply_filters("pre_term_$field", $value, $taxonomy);
841           $value = apply_filters("pre_${taxonomy}_$field", $value);
842           // Back compat filters
843           if ( 'slug' == $field )
844                $value = apply_filters('pre_category_nicename', $value);
845
846      } else if ( 'rss' == $context ) {
847           $value = apply_filters("term_${field}_rss", $value, $taxonomy);
848           $value = apply_filters("${taxonomy}_${field}_rss", $value);
849      } else {
850           // Use display filters by default.