我的模块使用hook_field_info()
定义自定义字段类型。在此模块的hook_install()
中,我正在尝试创建此自定义字段类型的新字段和实例:
function my_module_install() {
if (!field_info_field('my_field')) {
$field = array(
'field_name' => 'my_field',
'type' => 'custom_field_type',
'cardinality' => 1
);
field_create_field($field);
}
}
代码在field_create_field($field)
处崩溃:
WD php: FieldException: Attempt to create a field of unknown type custom_field_type. in field_create_field() (line 110 of [error]
/path/to/modules/field/field.crud.inc).
Cannot modify header information - headers already sent by (output started at /path/to/drush/includes/output.inc:37) bootstrap.inc:1255 [warning]
FieldException: Attempt to create a field of unknown type <em class="placeholder">custom_field_type</em>. in field_create_field() (line 110 of /path/to/modules/field/field.crud.inc).
出了什么问题?
答案 0 :(得分:9)
您正在尝试启用定义字段类型的模块,并尝试在其hook_install()
中使用这些字段类型,然后再启用它们。运行hook_install()
之前不会重建Drupal的字段信息缓存,因此当您尝试创建字段时,Drupal不知道模块中的字段类型。
要解决此问题,请在field_info_cache_clear()
之前调用field_create_field($field)
来手动重建字段信息缓存:
if (!field_info_field('my_field')) {
field_info_cache_clear();
$field = array(
'field_name' => 'my_field',
'type' => 'custom_field_type',
'cardinality' => 1
);
field_create_field($field);
}