presenter 层的用法？

 public function input_field()
    {
        if($this->wrappedObject->type === 'select')
        {
            $options = $this->wrappedObject->settingSelectOptions;
            $str = "<select name=".$this->wrappedObject->name." class='form-control'>";
            foreach($options as $key=>$value)
            {
                if($this->wrappedObject->value == $value['id'])
                {
                    $str .= "<option selected value='".$value['id']."'>".$value['body']."</option>";
                }
                else
                {
                    $str .= "<option value='".$value['id']."'>".$value['body']."</option>";
                }
            }
            $str .= "</select>";
            return $str;
        }
        if($this->wrappedObject->type === 'text')
        {
            $name = $this->wrappedObject->name;
            $value = $this->wrappedObject->value;
            $str = <<<str
<input class="form-control" name="$name" value="$value">
str;
            return $str;
        }
    }Copy