ThinkPHP
由于工作原因在thinkPHP的create()方法上遇到了问题,所以跟踪了create(),从而进一步探究了create()方法。
原来create()方法原来有两个参数,第一个参数就是众所周知的数据参数,第二个是隐藏的$type参数,那么这个参数用来控制什么的呢?
// 状态$type = $type?$type!empty($data[$this->getPk()])?self::MODEL_UPDATE:self::MODEL_INSERT);
仔细琢磨了这句话才发现,这个隐藏参数是用来指明本次数据库具体是什么操作的,1即为插入操作,0即为更新操作,
默认的情况下是不用给这个参数赋值的,原因是,系统能自动识别
它是这么识别的:
如果您传入的数据中有与主键相同字段的,则本次数据库操作则默认为更新操作,这么判断主要是因为大部分情况主键都是默认自增的,插入操作一般不会给主键赋值,但问题就出在这里
最近做的项目直接把学号作为主键,而学号不能使用自增而是有固定格式的,必须录入,
但是系统就自动把我的录入操作当成了更新操作,而我的自动完成代码都是这么写的:
复制代码 代码如下:protected $_auto = array(
array('majorid','maxmajoridadd1',1,'callback'),
);
第三个参数1查看手册就知道是指这个自动完成操作是在插入时候执行的。
而系统把我的插入操作当成了更新操作,我设置的自动完成代码自然就失效而不被执行了
当出现了你也要录入主键字段值的情况的时候您可以这么写
复制代码 代码如下:create($_POST,1)
直接告诉create方法此次操作是插入操作
这是非常难以发现的问题,最近发现好多人遇到此问题,特此撰文说明。
此外自动验证/自动完成功能失效还有可能是你的Model类名称写错了之类的,我就犯过这种错误,多个字母少个字母经常的事情
基本上自动验证/自动完成失效就这两种情况

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