php – Yii框架创建时的日期时间格式无效

我有这样的项目表结构

CREATE TABLE IF NOT EXISTS `projects` (
  `project_id` int(11) NOT NULL AUTO_INCREMENT,
  `title` varchar(255) NOT NULL,
  `description` text NOT NULL,
  `url` varchar(255) NOT NULL,
  `create_time` datetime DEFAULT NULL,
  `create_user_id` int(11) DEFAULT NULL,
  `update_time` datetime DEFAULT NULL,
  `update_user_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`project_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;

当我尝试用下一个表单创建新记录时

模型中的规则：

public function rules()
    {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            array('title, description, url', 'required'),
            array('create_user_id, update_user_id', 'numerical', 'integerOnly'=>true),
            array('title, url', 'length', 'max'=>255),
            array('create_time, update_time', 'safe'),
            // The following rule is used by search().
            // Please remove those attributes that should not be searched.
            array('project_id, title, description, url, create_time, create_user_id, update_time, update_user_id', 'safe', 'on'=>'search'),
        );
    }

我收到了错误

CDbCommand Failed to execute the sql statement: sqlSTATE[22007]:
Invalid datetime format: 1292 Incorrect datetime value: ” for column
‘create_time’ at row 1. The sql statement executed was: INSERT INTO
projects (title, description, url, create_time,
create_user_id, update_time, update_user_id) VALUES (:yp0, :yp1,
:yp2, :yp3, :yp4, :yp5, :yp6)

为什么？如何告诉Yii日期时间字段不是必需的,如果没有输入则可以包含默认值.

解决方法:

试试这个,因为这是Yii本身内部的自包含行为,它应该工作：

在规则模型中添加：

public function behaviors(){
        return array('CTimestampBehavior'=>array(
        'class' => 'zii.behaviors.CTimestampBehavior',
        'createAttribute' => 'create_time',
        'updateAttribute' => 'update_time',
        'setUpdateOnCreate' => true,  
        ));
    }