How does the db of php phalcon framework obtain the error message during mysql execution?

PhalconDb, PhalconDbAdapterPdo, and PhalconDbAdapterPdoMysql are database operations in phalcon. I have read these questions and I have not found any methods for obtaining the corresponding errors after database execution errors. I don't know what is going on. Do you know? Phalcon \ Db, Phalcon \ Db \ Adapter \ Pdo, Phalcon \ Db \ Adapter \ Mysql in Phalcon. I have read these questions and I have not found any methods for obtaining the corresponding errors after database execution errors. I don't know what is going on. Do you know?

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Phalcon \ Db, Phalcon \ Db \ Adapter \ Pdo, Phalcon \ Db \ Adapter \ Mysql in Phalcon. I have read these questions and I have not found any methods for obtaining the corresponding errors after database execution errors. I don't know what is going on. Do you know?

1. Assume that you have registered the "falsh" service:

php/** 1. Register the flash service with custom CSS classes */$di->set('flash', function() {    $flash = new \Phalcon\Flash\Direct(array(        'error'   => 'alert alert-danger callout callout-danger',        'success' => 'alert alert-success',        'notice'  => 'alert alert-info',        'warning' => 'alert alert-warning'    ));    return $flash;});

1. Take \ Phalcon \ Mvc \ Model as an example. In the controller:

phpif ($Article->save()) {                        $this->flash->success($Article->title . 'has been updated');                    } else {                        foreach ($Article->getMessages() as $message) {                            $this->flashSession->error($message);                        }                        return $this->response->redirect($paginateUrl);                        $this->view->disable();                    }

1. Of course, you can also customize the verification information:

phppublic function validation()    {      $this->validate(new Uniqueness(array(          'field' => 'slug',          'message' => 'The slug already exists in other articles,please modify the article title'      )));      if ($this->validationHasFailed() == true) {          return false;      }    }

For working with models

$robot       = new Robots();$robot->type = "mechanical";$robot->name = "Astro Boy";$robot->year = 1952;if ($robot->save() == false) {    echo "Umh, We can't store robots right now: \n";    foreach ($robot->getMessages() as $message) {        echo $message, "\n";    }} else {    echo "Great, a new robot was saved successfully!";}

For phql

$phql   = "INSERT INTO Cars VALUES (NULL, 'Nissan Versa', 7, 9999.00, 2012, 'Sedan')";$result = $manager->executeQuery($phql);if ($result->success() == false){    foreach ($result->getMessages() as $message)    {        echo $message->getMessage();    }}