public function render($content = null)
{
if ($content === null) {
if (!isset($this->parts['{input}'])) {
$this->getInputClass();
$this->parts['{input}'] = Html::activeTextInput($this->model, $this->attribute, $this->inputOptions);
}
if (!isset($this->parts['{label}'])) {
$this->parts['{label}'] = Html::activeLabel($this->model, $this->attribute, $this->labelOptions);
}
if (!isset($this->parts['{error}'])) {
$this->parts['{error}'] = Html::error($this->model, $this->attribute, $this->errorOptions);
}
if (!isset($this->parts['{hint}'])) {
$this->parts['{hint}'] = Html::activeHint($this->model, $this->attribute, $this->hintOptions);
}
$content = strtr($this->template, $this->parts);
} elseif (!is_string($content)) {
$content = call_user_func($content, $this);
}
return $this->begin() . "\n" . $content . "\n" . $this->end();
}
