尝试将catch块插入控制器或模型中吗？

Question

I have a structure project like follow:

/Controller
    test.php
/Models
    test_model.php

Now when I execute a request the model test.php shunk the request in the corresponding model, in this case test_model.php . Here no problem. Now my question is: I should handle the exceptino in test.php class (controller) or in the test_model.php class?

For execute all the database dialogue I have created a db layer with pdo. I set the:

$this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$this->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

for handle the exception. All working good but I have this doubt. A practice example:

<?php

    include "test_model.php";

    public function selectInformation()
    {
        try
        {
            $test = new Test_Model(); //just as example..
            return $test->selectUserInfo(); // test_model
        }catch(Exception $ex)
        {
              echo json_encode(array("success" => false, "message" => $ex->getMessage()));
              exit();
        }
    }

    ...

Here the Test_Model class:

   <?php

      class Test_Model extends PDO
      {

         public function __construct()
         {
               parent::__construct();
               $this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
               $this->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
         }

         public function selectUserInfo()
         {
             //I removed most part of the code, essentially here an exception is fired by a non correct db table name
         }

Actually I manage all the exceptions in the Test class but is a good practice? I use each Model only for return a result from the database. There is no each in the Model class actually.

Answer 1

Neither in the model or controller.

An error exception have to be handled in the error handler.

Instead of "handling" every call to the model separately, you have to handle all errors in a single place. Which is called error handler.

Neither error message or line number should be sent in JSON. This information have to be logged locally, while no internal error have to be revealed outside. Only a generalized excuse have to be shown.

There should be an error handler set through set_error_handler that have to be responsible for handling errors. It should log errors in production, while only a generalized excuse sent outside.

Note that it is very important to send appropriate HTTP status code in case of error, of 5xx family

Answer 2

您应该将try catch块放入控制器中。