我使用 Yii MVC 开发了一个脚本,但索引键和标准有问题。
我想防止插入已经存储在数据库中的记录;
我的示例,每次都无法检查并尝试添加新记录。
为什么 ?以及如何做到这一点?
CDbCommand failed to execute the SQL statement: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '21-/popular/category/1.html' for key 'index_link'. The SQL statement executed was: INSERT INTO `categories` (`server_id`, `website_id`, `slave_category_id`, `link`, `name`, `image`, `videos`, `status`) VALUES (:yp0, :yp1, :yp2, :yp3, :yp4, :yp5, :yp6, :yp7)
CREATE TABLE IF NOT EXISTS `categories` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`server_id` int(11) NOT NULL,
`website_id` int(11) NOT NULL,
`slave_category_id` int(11) NOT NULL,
`link` varchar(255) NOT NULL,
`name` varchar(255) NOT NULL,
`image` varchar(255) NOT NULL,
`videos` int(11) NOT NULL,
`status` int(11) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `index_link` (`website_id`,`link`),
UNIQUE KEY `index_name` (`website_id`,`name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=332 ;
PK 是 id;另一个索引,是 website_id + link;另一个索引是 website_id + name;
以下代码无法检查并阻止插入:1
$criteria_categories = new CDbCriteria();
$criteria_categories->condition = " `server_id`=':server_id' and `website_id`=':website_id' and `link`=':link' and `name`=':name' ";
$criteria_categories->params = array(
':server_id' => $model_website->server_id,
':website_id' => $model_website->id,
':link' => $matches_url[$value->link][$key2],
':name' => $matches_url[$value->name][$key2],
);
$record_categories = Categories::model()->find($criteria_categories);
print_r($record_categories);
if (!$record_categories) {
$model_categories = new Categories();
$model_categories->server_id = $model_website->server_id;
$model_categories->website_id = $model_website->id;
$model_categories->slave_category_id = 1; //??
$model_categories->link = $matches_url[$value->link][$key2];
$model_categories->name = $matches_url[$value->name][$key2];
$model_categories->image = $matches_url[$value->image][$key2];
$model_categories->videos = 0;
$model_categories->status = 0;
$model_categories->save();
}