php - PHP-DI says missing parameter while in definition file has set

Question

I am new to PHP-DI and I really do not understand what do I miss.

I have a container:

$definitonFile = __DIR__ . '/app/etc/di_config.php';

$containerBuilder = new \DI\ContainerBuilder();
$containerBuilder->useAutowiring(true);
$containerBuilder->addDefinitions($definitonFile);
$container = $containerBuilder->build();
$container->call(["Vendor\MyTestClass", "getName"], []);

In the definition file:

return [
  'Logger' => DI\autowire()->constructor('app.log'),
];

And int the MyTestClass

<?php

namespace Vendor;

use Monolog\Logger;

class MyTestClass
{
    /**
     * @var Logger
     */
    private $logger;

    public function __construct(Logger $logger)
    {
        $this->logger = $logger;
    }

    public function getName()
    {
        var_dump($this->logger);
    }

}

For some reason I am getting this error message:

Fatal error: Uncaught DI\Definition\Exception\InvalidDefinition: Entry "Vendor\MyTestClass" cannot be resolved: Entry "Monolog\Logger" cannot be resolved: Parameter $name of __construct() has no value defined or guessable Full definition: Object ( class = Monolog\Logger lazy = false __construct( $name = #UNDEFINED# $handlers = (default value) array ( ) $processors = (default value) array ( ) ) ) Full definition: Object ( class = Vendor\MyTestClass lazy = false __construct( $logger = get(Monolog\Logger) ) ) in /var/www/dmholding.lh/vendor/php-di/php-di/src/Definition/Exception/InvalidDefinition.php on line 18

I am doing exactly as in the documentation.

Can somebody look at it?

标签： phpphp-di

Answer 1

I don't see the Logger class being defined. See this example in the PHP-DI documentation.

<?php
// config.php

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

return [
    // ...

    Psr\Log\LoggerInterface::class => DI\factory(function () {
        $logger = new Logger('mylog');

        $fileHandler = new StreamHandler('path/to/your.log', Logger::DEBUG);
        $fileHandler->setFormatter(new LineFormatter());
        $logger->pushHandler($fileHandler);

        return $logger;
    }),
];

http://php-di.org/doc/best-practices.html#using-libraries