core/Form.php
public function clearValues()
    {
        $this->values = null;
        $fields = $this->fields;
        foreach ($fields as $name => $field) {
            $field->value = null;
        }
    }
public function clearValues()
    {
        $this->values = null;
        $fields = $this->fields;
        foreach ($fields as $name => $field) {
            $field->value = null;
        }
    }
清空表单值