cakephp - 如何处理完整性约束违规错误

Question

我在这里不知所措.我需要知道在违反完整性约束的情况下如何处理错误消息.

意思是我想向用户显示一些有意义的消息,而不是显示错误消息

Error: SQLSTATE[23000]: Integrity constraint violation: 1451 Cannot delete or update a parent row: a foreign key constraint fails

我需要捕获这些数据库错误,只显示像说的消息

The item you are trying to delete is associated with other records 

我们如何处理这个问题.

我在这里找到了一个推荐:https://stackoverflow.com/a/8842963/576523

但我不想做计数检查.

当我们使用debug_kit插件时,我们可以看到他们已经在下面捕获了这些值

变量选项卡.我需要一种方法来执行此操作或从debug_kit插件访问这些数据.

Thankz.

Answer 1

你也可以用try-catch

try {
    $this->Item->delete();
} catch (Exception $e) {
    $error = 'The item you are trying to delete is associated with other records';
    // The exact error message is $e->getMessage();
    $this->set('error', $error);
}

Answer 2

如果您只想捕获特定的异常，请在 catch 块中指定异常类。希望它能解决您的问题。

try {
    $this->Item->delete();
} catch (\PDOException $e) {
    $error = 'The item you are trying to delete is associated with other records';
    //exact error message $e->getMessage();
}