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<?php
// $Id$
/**
* @file
* Field API multilingual handling.
*/
/**
* Form submit handler for node_form().
*
* Update the field language according to the node language, changing the
* previous language if necessary.
*/
function locale_field_node_form_update_field_language($form, &$form_state, $reset_previous = TRUE) {
$node = (object) $form_state['values'];
$available_languages = field_multilingual_content_languages();
// @todo: Unify language neutral language codes.
$selected_language = empty($node->language) ? FIELD_LANGUAGE_NONE : $node->language;
list(, , $bundle) = field_extract_ids('node', $node);
foreach (field_info_instances('node', $bundle) as $instance) {
$field_name = $instance['field_name'];
$field = field_info_field($field_name);
$previous_language = $form[$field_name]['#language'];
// Handle a possible language change: previous language values are deleted,
// new ones are inserted.
if ($field['translatable'] && $previous_language != $selected_language) {
$form_state['values'][$field_name][$selected_language] = $node->{$field_name}[$previous_language];
if ($reset_previous) {
$form_state['values'][$field_name][$previous_language] = array();
}
}
}
}
/**
* Apply fallback rules to the given object.
*
* Parameters are the same of hook_field_attach_view().
*/
function locale_field_fallback_view(&$output, $context) {
// Lazily init fallback values and candidates to avoid unnecessary calls.
$fallback_values = array();
$fallback_candidates = NULL;
list(, , $bundle) = field_extract_ids($context['obj_type'], $context['object']);
foreach (field_info_instances($context['obj_type'], $bundle) as $instance) {
$field_name = $instance['field_name'];
$field = field_info_field($field_name);
// If the items array is empty then we have a missing field translation.
// @todo: Verify this assumption.
if (empty($output[$field_name]['items'])) {
if (!isset($fallback_candidates)) {
require_once DRUPAL_ROOT . '/includes/language.inc';
$fallback_candidates = language_fallback_get_candidates();
}
foreach ($fallback_candidates as $langcode) {
// Again if we have a non-empty array we assume the field translation is
// valid.
if (!empty($context['object']->{$field_name}[$langcode])) {
// Cache fallback values per language as fields might have different
// fallback values.
if (!isset($fallback_values[$langcode])) {
$fallback_values[$langcode] = field_attach_view($context['obj_type'], $context['object'], $context['build_mode'], $langcode);
}
// We are done, skip to the next field.
$output[$field_name] = $fallback_values[$langcode][$field_name];
break;
}
}
}
}
}