type)) { translation_helpers_invoke_translation_change($node); } } /** * Invoke hook_node_translation_change() to allow modules to respond to a change in * source translation. * * Follows logic in translation_remove_from_set(). * * Sample implementation: * * function example_node_translation_change($node) { * if (isset($node->translation_change)) { * // If there is only one node remaining, track by nid rather than tnid. Otherwise, use * // the new tnid. * $new = $node->translation_change['new_tnid'] == 0 ? $node->translation_change['remaining_nid'] : $node->translation_change['new_tnid']; * db_update('example') * ->fields(array('id' => $new)) * ->condition('id', $node->translation_change['old_tnid']) * ->execute(); * } * } * */ function translation_helpers_invoke_translation_change($node) { if (isset($node->tnid)) { if (db_query('SELECT COUNT(*) FROM {node} WHERE tnid = :tnid', array(':tnid' => $node->tnid))->fetchField() == 1) { // There is only one node left in the set. $node->translation_change = array( 'old_tnid' => $node->tnid, 'new_tnid' => 0, // Determine the remaining former member of the translation set. // May be needed e.g. to reassign existing data from the tnid to this nid. 'remaining_nid' => db_query('SELECT nid FROM {node} WHERE tnid = :tnid', array(':tnid' => $node->tnid))->fetchField(), ); // Allow other modules to respond to the removal of this translation set. module_invoke_all('node_translation_change', $node); } else { // If the node being removed was the source of the translation set, // we pick a new source - preferably one that is up to date. if ($node->tnid == $node->nid) { $node->translation_change = array( 'old_tnid' => $node->tnid, 'new_tnid' => db_query('SELECT nid FROM {node} WHERE tnid = :tnid ORDER BY translate ASC, nid ASC', array(':tnid' => $node->tnid))->fetchField(), ); // Allow other modules to respond to the changed source for this translation set. module_invoke_all('node_translation_change', $node); } } } } /** * Implement hook_module_implements_alter(). * * Set translation_helpers to act before translation module. */ function translation_helpers_module_implements_alter(&$implementations, $hook) { if ($hook == 'node_delete') { // Move translation_helpers_node_delete() to the beginning of the list. $group = $implementations['translation_helpers']; unset($implementations['translation_helpers']); $implementations = array_merge(array('translation_helpers' => $group), $implementations); } } /** * Return the source translation of a node. */ function translation_helpers_get_source($node) { if (isset($node->tnid) && translation_supported_type($node->type)) { // A node can be its own source. if ($node->nid == $node->tnid) { return $node; } return node_load($node->tnid); } return FALSE; } /** * Return the translation of a node in a given language. */ function translation_helpers_get_translation($node, $language) { if (isset($node->tnid) && translation_supported_type($node->type)) { $translations = translation_node_get_translations($node->tnid); if (isset($translations[$language])) { return node_load($translations[$language]->nid); } } return FALSE; }