Source View: pre_{$field}

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

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
332           $format_to_edit = array('link_notes');
333           $value = apply_filters("edit_$field", $value, $bookmark_id);
334
335           if ( in_array($field, $format_to_edit) ) {
336                $value = format_to_edit($value);
337           } else {
338                $value = attribute_escape($value);
339           }
340      } else if ( 'db' == $context ) {
341           $value = apply_filters("pre_$field", $value);
342      } else {
343           // Use display filters by default.
344           $value = apply_filters($field, $value, $bookmark_id, $context);
345      }
346
347      if ( 'attribute' == $context )
348           $value = attribute_escape($value);
349      else if ( 'js' == $context )
350           $value = js_escape($value);