public function schema_fields($data = false)
{
if ($data) {
if (is_callable($data)) {
$this->fields_data = call_user_func($data);
} elseif (is_array($data)) {
$this->fields_data = array_replace_recursive($this->fields_data, $data);
} elseif (is_string($data)) {
$module = $data;
$method = 'fields';
if ($m = Core_Regexps::match_with_results('{^(.+)::(.+)$}', $data)) {
$module = trim($m[1]);
$method = trim($m[2]);
}
$this->schema_module = $module;
if (strpos($module, '.') > 0) {
Core::load($module);
$module = str_replace('.', '_', $module);
}
$this->fields_data = call_user_func(array($module, $method));
}
foreach ($this->fields_data as $field => $data) {
if (isset($data['type']) && $data['type'] == 'serial' || isset($data['sqltype']) && $data['sqltype'] == 'serial') {
$this->key($field);
break;
}
}
$this->columns(CMS_Fields::fields_to_columns($this->fields_data));
return $this;
} else {
if ($this->fields_data === false) {
$this->fields_data = array();
}
return $this->fields_data;
}
}
