Phalcon：名称空间类声明错误

Question

My folder structure is:

/app/config/loader.php
/app/validation/Domain.php

Domain.php

namespace Validation
{
    use Phalcon\Validation\Validator as Validator;

    class Email extends Validator
    {
        public function validate($validator, $attribute)
        {
            $result = parent::validate($validator,$attribute);

            return $result;
        }
    }
}

Loader.php

$loader = new \Phalcon\Loader();

$loader->registerNamespaces(
    array(
        'Validation'  => __DIR__ . '/../validation/'
    )
);

$loader->register();

echo '<pre><br/>';
var_dump(new Validation\Email());
die();

and it returns an error:

Fatal error: Class 'Validation\\Domain\\Email' not found

What i'm doing wrong?

PS: An example here http://docs.phalconphp.com/en/latest/reference/loader.html also does't work.

// Creates the autoloader
$loader = new \Phalcon\Loader();

//Register some namespaces
$loader->registerNamespaces(
    array(
       "Example\Base"    => "vendor/example/base/",
       "Example\Adapter" => "vendor/example/adapter/",
       "Example"         => "vendor/example/",
    )
);

// register autoloader
$loader->register();

// The required class will automatically include the
// file vendor/example/adapter/Some.php
$some = new Example\Adapter\Some();

I created the same structure and I get an error:

Fatal error: Class 'Example\\Adapter\\Some' not found

Answer 1

Phalcon loader has some questionable reputation. If you use composer it would often make more sense to use that for autoloading your own code via the autoload directive.

# composer.json
{

    "require": {
        "phpunit/dbunit": "*",
        "phpunit/phpunit": "*",
        "…": "…"
    },
    "autoload": {
        "psr-0": {
            "": "../src"
        }
    }
}

Otherwise the issue would be with the paths, make sure you take into account subfolders (where you config sits, where the loaded code sits, etc). It seems you need to change 'app/validation/' to '../../app/validation/' – figure this out yourself. Also try setting the absolute path if that doesn't do the job using __DIR__ . '../../app/validation/' __DIR__ . '../../app/validation/' .

Edit:

In your structure you say you have Domain.php but loading Domain\\Email – surely the problem is here. I also tested it locally, the only instance when the loader works is when the absolute path is provided (and given you actually have app/validator/Domain/Email.php file with a class).

$loader->registerNamespaces(
    array(
        'Validation'  => __DIR__ . '/../../app/validation/'
    )
);

The advice on the composer autoloader stays up. Note how you are not using PSR-0 standard for your namespaces ( validator starts with a lower letter, your Validator namespace starts with a capital), which isn't cool…