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<?php
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// $Id: object_driver.module,v 1.9 2007/04/08 16:45:03 pwolanin Exp $
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/**
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* hooks this module looks for (hook -> module name, classhook -> class name):
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*
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* hook_data_classes(): returns an array of class names
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*
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* classhook_class_define(): return a definition for the object's data table.
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* classhook_class_access($op): $op = 'create', 'view', 'update', 'delete'
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*
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* The primary key of the data table must have the name classhook_id
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*
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*
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* optional (overrides default functionality)- functionally similar to node module functions
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*
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* classhook_class_new(): return an object with all keys set to default values
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* classhook_class_load($class, $id) : returns a full object according to $id
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* classhook_class_validate($obj): sets errors on the edit form
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* classhook_class_submit(&$obj): fix up the upject before saving, after validation
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* classhook_class_save($obj): save the new or updated data to the module's table
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* classhook_class_delete($obj): delete an object
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* classhook_class_edit_form($obj): an editing form
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* classhook_class_view_list(): a list or table of data
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* classhook_class_view($obj): a view of a single data item
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*
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*
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* optionally implemented by a 3rd module to alter the behavior/data of a class
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*
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* hook_objectapi_X($obj): X = load, validate, submit, insert, update, delete, view
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*/
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function object_driver_perm() {
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return array('access object driver data');
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}
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function object_driver_menu($may_cache) {
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$items = array();
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if ($may_cache) {
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$class_list = object_driver_class_list(TRUE);
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if (count($class_list)) {
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$items[] = array(
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'path' => 'add-data',
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'title' => t('Data add'),
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'callback' => 'object_driver_add_data',
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'access' => user_access('access object driver data'),
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);
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$items[] = array(
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'path' => 'view-data',
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'title' => t('Data view'),
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'callback' => 'object_driver_view_data',
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'access' => user_access('access object driver data'),
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);
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foreach ($class_list as $class) {
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$obj_def = call_user_func($class .'_class_define');
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if (!empty($obj_def['auto_menu'])) {
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$items[] = array(
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'path' => 'add-data/'. $class,
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'title' => t('Add @class', array('@class' => ucfirst($class))),
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'access' => object_driver_access('create', $class),
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);
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$items[] = array(
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'path' => 'view-data/'. $class,
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'title' => t('@class overview', array('@class' => ucfirst($class))),
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'access' => object_driver_access('view', $class),
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);
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}
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}
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}
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}
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else {
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$class_list = object_driver_class_list();
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foreach ($class_list as $class) {
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if (arg(0) == $class && is_numeric(arg(1))) {
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$obj_def = call_user_func($class .'_class_define');
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if (!empty($obj_def['auto_menu'])) {
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$id_name = $class .'_id';
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$obj = object_driver_load($class, arg(1));
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if ($id = $obj->$id_name) {
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$items[] = array('path' => $class. '/'. $id, 'title' => t('View @class', array('@class' => $class)),
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'callback' => 'object_driver_view',
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'callback arguments' => array($obj),
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'access' => object_driver_access('view', $class),
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'type' => MENU_CALLBACK);
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$items[] = array('path' => $class. '/'. $id .'/view', 'title' => t('View'),
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'type' => MENU_DEFAULT_LOCAL_TASK, 'weight' => -10);
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$items[] = array('path' => $class. '/'. $id .'/edit', 'title' => t('Edit'),
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'callback' => 'object_driver_edit_page',
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'callback arguments' => array($obj),
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'access' => object_driver_access('update', $class),
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'weight' => 1,
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'type' => MENU_LOCAL_TASK);
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$items[] = array('path' => $class. '/'. $id .'/delete', 'title' => t('Delete'),
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'callback' => 'drupal_get_form',
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'callback arguments' => array('object_driver_delete_confirm', $obj),
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'access' => object_driver_access('delete', $class),
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'weight' => 1,
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'type' => MENU_CALLBACK);
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}
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}
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}
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}
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}
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return $items;
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}
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function object_driver_access($op, $class) {
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if (function_exists($class .'_class_access')) {
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$function = $class .'_class_access';
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return $function($op);
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}
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drupal_set_message(t('No access function is defined for object_driver class %class', array('%class' => $class)), 'error');
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return TRUE;
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}
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function object_driver_add_data($class = '') {
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$class_list = object_driver_class_list();
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if ($class && in_array($class, $class_list)) {
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if (function_exists($class .'_class_new')) {
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$obj = call_user_func($class .'_class_new');
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}
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else { // default functionality
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$obj = new stdClass();
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$obj->class = $class;
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$obj_def = call_user_func($class .'_class_define');
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$fields = $obj_def['columns'];
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foreach ($fields as $key => $data) {
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$obj->$key = isset($data['default']) ? $data['default'] : '';
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}
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}
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return drupal_get_form($class .'_class_edit_form', $obj);
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}
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elseif (count($class_list)) {
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$links = array();
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foreach ($class_list as $class) {
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$obj_def = call_user_func($class .'_class_define');
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if (!empty($obj_def['auto_menu'])) {
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if (object_driver_access('create', $class)) {
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$links[$class]['href'] = l(ucfirst($class), 'add-data/'. $class);
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$links[$class]['description'] = isset($obj_def['description']) ? $obj_def['description'] : '';
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}
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}
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}
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return theme('object_driver_add_links', $links);
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}
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}
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function theme_object_driver_add_links($links) {
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$output = '';
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if (count($links)) {
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uksort($links, 'strnatcasecmp');
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$output .= t('Choose the appropriate item from the list:') .'<dl>';
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foreach ($links as $class => $link) {
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$output .= '<dt>'. $link['href'] .'</dt>';
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$output .= '<dd>'. $link['description'] .'</dd>';
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}
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$output .= '</dl>';
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}
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else {
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$output = t('No data types are available.');
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}
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return $output;
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}
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function object_driver_view_data($class = '') {
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$class_list = object_driver_class_list();
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if ($class && in_array($class, $class_list)) {
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if (function_exists($class .'_class_view_list')) {
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return call_user_func($class .'_class_view_list');
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}
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else { // default functionality
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$obj_def = call_user_func($class .'_class_define');
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$fields = $obj_def['columns'];
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$cols = array_keys($fields);
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$id_name = $class .'_id';
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$query_cols = array($id_name);
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$next = array_shift($cols);
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while ($next && count($query_cols) < 7) { // TODO make this number changeable?
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$query_cols[] = $next;
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$next = array_shift($cols);
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}
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// drupal_set_message(print_r($query_cols,1));
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$table = isset($obj_def['table']) ? $obj_def['table'] : $class;
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$count_sql = "SELECT COUNT(*) FROM {". $table ."}";
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$sql = "SELECT ". implode(', ', $query_cols) ." FROM {". $table ."} ORDER BY ". $id_name;
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$result = pager_query($sql, 25, 0, $count_sql); // TODO make this number changeable?
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return theme('object_driver_show_list', $result, $class, $query_cols, $fields);
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}
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}
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elseif (count($class_list)) {
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$links = array();
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foreach ($class_list as $class) {
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$obj_def = call_user_func($class .'_class_define');
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if (!empty($obj_def['auto_menu'])) {
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if (object_driver_access('view', $class)) {
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$links[$class]['href'] = l(ucfirst($class), 'view-data/'. $class);
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$links[$class]['description'] = isset($obj_def['description']) ? $obj_def['description'] : '';
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}
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}
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}
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return theme('object_driver_view_links', $links);
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}
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}
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function theme_object_driver_view_links($links) {
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return theme_object_driver_add_links($links);
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}
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function theme_object_driver_show_list($result, $class, $query_cols, $fields) {
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$id_name = array_shift($query_cols);
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$rows = array();
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$edit = object_driver_access('update', $class);
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while ($obj = db_fetch_object($result)) {
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$arow = array(
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l(t('View'), $class ."/". $obj->$id_name));
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$arow[] = ($edit) ? l(t('Edit'), $class ."/". $obj->$id_name ."/edit") : ' ';
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foreach($query_cols as $key) {
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switch ($fields[$key]['form type']) {
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case 'radios':
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case 'select':
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$output = $fields[$key]['options'][$obj->$key];
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$type = $key.'_'.$obj->$key;
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break;
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default:
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$output = check_plain(truncate_utf8($obj->$key, 15));
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$type = $key;
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}
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$arow[] = array('data' => $output, 'class' => $type);
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}
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$rows[] =$arow;
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}
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if (!$rows) {
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$rows[] = array(array('data' => t('No data available.'), 'colspan' => '3'));
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}
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$header = array(array('data' => t('Operations'), 'colspan' => '2'));
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foreach($query_cols as $key) {
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$header[] = $fields[$key]['name'];
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}
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$output = '<div id="object-driver-'. $class .'">';
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$output .= theme('table', $header, $rows);
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$output .= theme('pager', array(), 25); // TODO make this number changeable?
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$output .= '</div>';
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return $output;
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}
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/**
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* Menu callback; returns the object editing form, or redirects to delete confirmation.
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*/
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function object_driver_edit_page($obj) {
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$class = $obj->class;
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$id_name = $class .'_id';
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if ($_POST['op'] == t('Delete')) {
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// Note: we redirect to make the tabs disappear.
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if ($_REQUEST['destination']) {
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$destination = drupal_get_destination();
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unset($_REQUEST['destination']);
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}
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drupal_goto($class .'/'. $obj->$id_name .'/delete', $destination);
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}
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return drupal_get_form($class .'_class_edit_form', $obj);
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}
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/**
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* Implementation of hook_forms(). All object forms share the same default handler
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*/
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function object_driver_forms() {
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foreach (object_driver_class_list() as $class) {
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$forms[$class .'_class_edit_form']['callback'] = 'object_driver_form';
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}
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return $forms;
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}
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function object_driver_form($obj) {
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$class = $obj->class;
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$form = array();
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$obj_def = call_user_func($class .'_class_define');
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$fields = $obj_def['columns'];
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$id_name = $class .'_id';
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$form['class'] = array(
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'#type' => 'value',
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'#value' => $class,
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);
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if (isset($obj->$id_name)) {
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$form[$id_name] = array(
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'#type' => 'value',
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'#value' => $obj->$id_name,
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);
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}
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foreach ($fields as $key => $data) {
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switch ($data['form type']) {
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case 'radios':
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case 'select':
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$form[$key] = array(
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'#type' => $data['form type'],
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'#default_value' => $obj->$key,
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'#options' => $data['options'],
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'#required' => TRUE,
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);
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break;
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case 'textarea':
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$rows = isset($data['rows']) ? $data['rows'] : 5;
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$form[$key] = array(
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'#type' => 'textarea',
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'#default_value' => $obj->$key,
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'#rows' => $rows,
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);
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break;
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case 'textfield':
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default:
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$maxlength = isset($data['maxlength']) ? $data['maxlength'] : 128;
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$size = $maxlength < 60 ? $maxlength : 60;
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$form[$key] = array(
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'#type' => 'textfield',
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'#default_value' => $obj->$key,
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'#size' => $size,
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'#maxlength' => $maxlength,
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);
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}
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$form[$key]['#title'] = $data['name'];
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$form[$key]['#required'] = !empty($data['required']);
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}
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$form['#id'] = $class .'-form';
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$form['#base'] = 'object_driver_form';
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$form['submit'] = array('#type' => 'submit', '#value' => t('Save'), '#weight' => 45);
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if (isset ($obj->$id_name) && object_driver_access('delete', $class)) {
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$form['delete'] = array('#type' => 'submit', '#value' => t('Delete'), '#weight' => 50);
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}
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return $form;
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}
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function object_driver_form_validate($form_id, $form_values) {
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$obj = (object)$form_values;
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if (function_exists($class .'_validate')) {
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$function = $class .'_validate';
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$function($obj); // For pass-by-reference
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}
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object_driver_invoke_all('validate', $obj);
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}
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function object_driver_form_submit($form_id, $form_values) {
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$obj = (object)$form_values;
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$class = $obj->class;
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| 371 |
if (function_exists($class .'_class_submit')) {
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| 372 |
$function = $class .'_class_submit';
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$function($obj); // For pass-by-reference
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}
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object_driver_invoke_all('submit', $obj);
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object_driver_save($obj);
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| 379 |
$id_name = $class.'_id';
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| 380 |
if (isset($obj->$id_name)) {
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| 381 |
if (object_driver_access('view', $class)) {
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| 382 |
return $class .'/'. $obj->$id_name;
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}
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| 384 |
}
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return '';
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| 386 |
}
|
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| 388 |
function object_driver_view($obj) {
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$class = $obj->class;
|
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| 391 |
$rows = array();
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| 392 |
$obj_def = call_user_func($class .'_class_define');
|
| 393 |
$fields = $obj_def['columns'];
|
| 394 |
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| 395 |
foreach($fields as $key => $data) {
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| 396 |
$arow = array($data['name']);
|
| 397 |
switch ($data['form type']) {
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case 'radios':
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| 399 |
case 'select':
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| 400 |
$output = $data['options'][$obj->$key];
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$type = $key.'_'.$obj->$key;
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break;
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default:
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$output = check_plain($obj->$key);
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$type = $key;
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}
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$rows[] = array($data['name'], array('data' => $output, 'class' => $type));
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}
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return theme('table', array(), $rows) . object_driver_navigation($obj);
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}
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function object_driver_navigation($obj) {
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//TODO
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| 415 |
return '';
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}
|
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| 418 |
function object_driver_class_list($rebuild = FALSE) {
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| 419 |
$list = variable_get('object_driver_class_list', NULL);
|
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| 421 |
if (is_null($list) || $rebuild) {
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| 422 |
$list = array();
|
| 423 |
foreach (module_implements('data_classes') as $module) {
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| 424 |
$result = call_user_func($module .'_data_classes');
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| 425 |
if (isset($result) && is_array($result)) {
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| 426 |
$list = array_merge($list, $result);
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| 427 |
}
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| 428 |
}
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| 429 |
variable_set('object_driver_class_list', $list);
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| 430 |
}
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| 431 |
return $list;
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| 432 |
}
|
| 433 |
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| 434 |
function object_driver_enable() {
|
| 435 |
object_driver_class_list(TRUE);
|
| 436 |
}
|
| 437 |
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| 438 |
function object_driver_disable() {
|
| 439 |
object_driver_class_list(TRUE);
|
| 440 |
}
|
| 441 |
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| 442 |
function object_driver_load($class, $id, $reset = FALSE) {
|
| 443 |
static $obj_cache = array();
|
| 444 |
|
| 445 |
if ($reset) {
|
| 446 |
unset($obj_cache[$class]);
|
| 447 |
}
|
| 448 |
|
| 449 |
if (isset($obj_cache[$class][$id])) {
|
| 450 |
return is_object($obj_cache[$class][$id]) ? drupal_clone($obj_cache[$class][$id]) : $obj_cache[$class][$id];
|
| 451 |
}
|
| 452 |
$extra = array();
|
| 453 |
$id_name = $class .'_id';
|
| 454 |
|
| 455 |
if (function_exists($class .'_load')) {
|
| 456 |
$obj = call_user_func($class .'_load', $id);
|
| 457 |
}
|
| 458 |
else { // Default functionality
|
| 459 |
$obj_def = call_user_func($class .'_class_define');
|
| 460 |
$table = isset($obj_def['table']) ? $obj_def['table'] : $class;
|
| 461 |
|
| 462 |
$obj = db_fetch_object(db_query("SELECT * FROM {". $table ."} WHERE %s = %d", $id_name, $id));
|
| 463 |
|
| 464 |
}
|
| 465 |
if (isset($obj->$id_name)) {
|
| 466 |
$obj->class = $class;
|
| 467 |
$result = object_driver_invoke_all('load', $obj);
|
| 468 |
$extra = array_merge($extra, $result); // Use + instead?
|
| 469 |
|
| 470 |
foreach ($extra as $key => $value) {
|
| 471 |
$obj->$key = $value;
|
| 472 |
}
|
| 473 |
$obj->class = $class; // Just in case
|
| 474 |
}
|
| 475 |
$obj_cache[$class][$id] = $obj;
|
| 476 |
return is_object($obj_cache[$class][$id]) ? drupal_clone($obj_cache[$class][$id]) : $obj_cache[$class][$id];
|
| 477 |
}
|
| 478 |
|
| 479 |
function object_driver_save(&$obj) {
|
| 480 |
$class = $obj->class;
|
| 481 |
$id_name = $class .'_id';
|
| 482 |
// Is this a new object?
|
| 483 |
$obj->is_new = empty($obj->$id_name);
|
| 484 |
|
| 485 |
if (function_exists($class .'_save')) {
|
| 486 |
call_user_func($class .'_save', $obj);
|
| 487 |
}
|
| 488 |
else { // Default functionality
|
| 489 |
$obj_def = call_user_func($class .'_class_define');
|
| 490 |
$table = isset($obj_def['table']) ? $obj_def['table'] : $class;
|
| 491 |
|
| 492 |
if ($obj->is_new) {
|
| 493 |
// Insert a new object
|
| 494 |
$obj->$id_name = db_next_id("{". $table ."}_id");
|
| 495 |
}
|
| 496 |
|
| 497 |
$column_names = array();
|
| 498 |
$column_placeholders = array();
|
| 499 |
$column_assignments = array();
|
| 500 |
$col_type_map = array(
|
| 501 |
"int" => "%d", "mediumint" => "%d", "tinyint" => "%d", "bigint" => "%d", "smallint" => "%d",
|
| 502 |
"float" => "%f",
|
| 503 |
"blob" => "%b", "longblob" => "%b",
|
| 504 |
'text' => "'%s'", 'longtext' => "'%s'", 'varchar' => "'%s'",
|
| 505 |
);
|
| 506 |
|
| 507 |
foreach ($obj_def['columns'] as $column => $attrib) {
|
| 508 |
$column_names[] = $column;
|
| 509 |
$placeholder = isset($attrib['data type']) ? $col_type_map[$attrib['data type']] : "'%s'";
|
| 510 |
$column_placeholders[] = $placeholder;
|
| 511 |
$column_assignments[] = $column .' = '. $placeholder;
|
| 512 |
$data[] = $obj->$column;
|
| 513 |
}
|
| 514 |
$data[] = $obj->$id_name;
|
| 515 |
if ($obj->is_new) {
|
| 516 |
db_query("INSERT INTO {". $table ."} (". implode(', ', $column_names) .", $id_name) VALUES (". implode(', ', $column_placeholders) .', %d)', $data);
|
| 517 |
}
|
| 518 |
else {
|
| 519 |
db_query("UPDATE {". $table ."} SET ". implode(', ', $column_assignments) ." WHERE $id_name = %d", $data);
|
| 520 |
}
|
| 521 |
}
|
| 522 |
if ($obj->is_new) {
|
| 523 |
object_driver_invoke_all('insert', $obj);
|
| 524 |
}
|
| 525 |
else {
|
| 526 |
object_driver_invoke_all('update', $obj);
|
| 527 |
}
|
| 528 |
cache_clear_all();
|
| 529 |
}
|
| 530 |
|
| 531 |
function object_driver_delete_confirm($obj) {
|
| 532 |
$class = $obj->class;
|
| 533 |
$id_name = $class .'_id';
|
| 534 |
$form['obj'] = array(
|
| 535 |
'#type' => 'value',
|
| 536 |
'#value' => $obj,
|
| 537 |
);
|
| 538 |
$form['#submit'] = array('object_driver_delete_confirm_submit' => array());
|
| 539 |
$output = '';
|
| 540 |
if (object_driver_access('delete', $class)) {
|
| 541 |
$form = confirm_form($form,
|
| 542 |
t('Are you sure you want to delete this %class?', array('%class' => ucfirst($class))),
|
| 543 |
$_GET['destination'] ? $_GET['destination'] : $class .'/'. $obj->$id_name, t('This action cannot be undone.'),
|
| 544 |
t('Delete'), t('Cancel') );
|
| 545 |
}
|
| 546 |
|
| 547 |
return $form;
|
| 548 |
}
|
| 549 |
|
| 550 |
function object_driver_delete_confirm_submit($form_id, $form_values) {
|
| 551 |
object_driver_delete($form_values['obj']);
|
| 552 |
|
| 553 |
return "view-data/" . $form_values['obj']->class;
|
| 554 |
}
|
| 555 |
|
| 556 |
function object_driver_delete($obj) {
|
| 557 |
|
| 558 |
$class = $obj->class;
|
| 559 |
|
| 560 |
if (function_exists($class .'_delete')) {
|
| 561 |
$obj = call_user_func($class .'_delete', $obj);
|
| 562 |
}
|
| 563 |
else { // Default functionality
|
| 564 |
$obj_def = call_user_func($class .'_class_define');
|
| 565 |
$table = isset($obj_def['table']) ? $obj_def['table'] : $class;
|
| 566 |
$id_name = $class .'_id';
|
| 567 |
|
| 568 |
db_query("DELETE FROM {". $table ."} WHERE %s = %d", $id_name, $obj->$id_name);
|
| 569 |
if (isset($obj->type)) {
|
| 570 |
if (function_exists($obj->type .'_'. $class .'_delete')) {
|
| 571 |
call_user_func($obj->type .'_'. $class .'_delete', $obj);
|
| 572 |
}
|
| 573 |
}
|
| 574 |
}
|
| 575 |
object_driver_invoke_all('delete', $obj);
|
| 576 |
cache_clear_all();
|
| 577 |
}
|
| 578 |
|
| 579 |
function object_driver_invoke_all($op, &$obj) {
|
| 580 |
$data = array();
|
| 581 |
|
| 582 |
foreach (module_implements('objectapi_'. $op) as $name) {
|
| 583 |
$function = $name .'_objectapi_'. $op;
|
| 584 |
$result = $function($obj); // For pass-by-reference
|
| 585 |
if (isset($result) && is_array($result)) {
|
| 586 |
$data = array_merge($data, $result);
|
| 587 |
}
|
| 588 |
}
|
| 589 |
return $data;
|
| 590 |
}
|
| 591 |
|
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