Yii INSERT ... ON DUPLICATE UPDATE

Question

I am working on a Yii project. How can I use the ON DUPLICATE feature of MySQL ( http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html ) when doing a save() on a Yii model?

My MySQL is as follows:

CREATE TABLE `ck_space_calendar_cache` (
  `space_id` int(11) NOT NULL,
  `day` date NOT NULL,
  `available` tinyint(1) unsigned NOT NULL DEFAULT '0',
  `price` decimal(12,2) DEFAULT NULL,
  `offer` varchar(45) DEFAULT NULL,
  `presale_date` date DEFAULT NULL,
  `presale_price` decimal(12,2) DEFAULT NULL,
  `value_x` int(11) DEFAULT NULL,
  `value_y` int(11) DEFAULT NULL,
  PRIMARY KEY (`space_id`,`day`),
  KEY `space` (`space_id`),
  CONSTRAINT `space` FOREIGN KEY (`space_id`) REFERENCES `ck_space` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

My PHP is a follows:

$cache = new SpaceCalendarCache();
$cache->attributes = $day; //Some array with attributes              
$cache->save();

If there is a duplicate in my primary key (sapce_id,day), I don't want it to complain, I just want it to update with the latest data.

I know how to do it in raw SQL, I was just wondering if there is a clean Yii way to do it.

Answer 1

You are using models in Yii, its quite simple .. try to load you model where you suspect to have duplicate entries, if you find the entry the model is loaded else null is return. now if your model is null simply create new model. rest is your normal code to insert a new record.

//try to load model with available id i.e. unique key
$model = someModel::model()->findByPk($id);  

//now check if the model is null
if(!$model) $model = new someModel();

//Apply you new changes
$model->attributes = $attributes;

//save
$model->save();

Refer to post controllers update method in sample app Yii blog. I might be wrong with spelling of function names, sorry for that.