我想弄清楚这一点Drupal 6 php代码有什么问题，我想在Drupal 7中工作:
function node_widget_get_fields(&$form) {
$fields = array();
if (isset($form['#type'])) {
$content_type = content_types($form['#type']['#value']);
foreach ($content_type['fields'] as $field_name => $field) {
if ($field['type'] == 'nodereference' && $field['widget']['type'] ==
'node_widget_node_form') {
$fields[$field_name] = $field;
}
}
}
return $fields;
这是我所得到的:
function node_widget_get_fields(&$form) {
$fields = array();
if (isset($form['#type'])) {
$content_type = field_info_instances($form['#type']['#value']);
foreach ($content_type['fields'] as $field_name => $field) {
if ($field['type'] == 'nodereference' && $field['widget']['type'] ==
'node_widget_node_form') {
$fields[$field_name] = $field;
}
}
}
return $fields;
错误返回:
Notice: Undefined index: f in field_info_instances() (line 682 of /modules/field/field.info.inc).
Warning: Invalid argument supplied for foreach() in node_widget_get_fields() (line 164 of all/modules/node_widget/includes/node_widget.form.inc).
和
Notice: Undefined index: how_to in field_info_instances() (line 682 of /var/www/bitbybit/modules/field/field.info.inc).
Warning: Invalid argument supplied for foreach() in node_widget_get_fields() (line 164 of /var/www/bitbybit/sites/all/modules/node_widget/includes/node_widget.form.inc).
Notice: Undefined index: type in node_widget_get_fields() (line 163 of /var/www/bitbybit/sites/all/modules/node_widget/includes/node_widget.form.inc).
Notice: Undefined index: fields in node_widget_get_fields() (line 164 of /var/www/bitbybit/sites/all/modules/node_widget/includes/node_widget.form.inc).
field_info_instances接受两个参数(尽管它们不是必需的)，第一个是实体类型(在您的例子中更可能是node)，第二个是bundle。
在Drupal 7中，所有节点都是实体，内容类型是实体中的bundle。因此，要将所有字段附加到具有特定内容类型的node，您需要这样做:
$content_type = field_info_instances('node', $form['#type']['#value']);