Custom Formatter Documentation, field_view_field

API page: https://api.drupal.org/api/drupal/modules%21field%21field.module/functio...

Update documentation related to using custom formatters with field_view_field. This was difficult to find and may come up often when related to things like taxonomy.

If the custom formatter module is used something like the following must be used:

$display = array('type' => 'custom_formatters_my_formatter');
$output = field_view_field('node', $node, 'field_foo', $display);