Aura.Di

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Chris Johnson

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Jul 30, 2020, 12:04:12 PM7/30/20
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What am I doing wrong here?  AbstractHttpResponder takes an instance of ClxMsg in its constructor, and ClxMsg takes an instance of Logger in its constructor.  Logger takes 4 parameters in its constructor.  Yet when my framework tries to call a method within the AbstractHttpResponder class, I get an error like this:

"PHP Fatal error:  Uncaught Error: Typed property Clx\WebResponder\AbstractHttpResponder::$log must not be accessed before initialization"

Why isn't my Aura.Di container configuration code (below) properly initializing this class through its constructor?

        $di->set('clx/clxmsg', $di->lazyNew(ClxMsg::class));
        $di->set('cxj/phpsyslog', $di->lazyNew(Logger::class));

        $di->params[Logger::class] = [
            'ident'    => $ident,
            'level'    => $logLevel,
            'options'  => $logOptions,
            'facility' => $logFacility,
        ];
        $di->params[ClxMsg::class] = [
            'psr3-log' => $di->lazyGet('cxj/phpsyslog'),
        ];
        $di->params[AbstractHttpResponder::class] = [
            'log' => $di->lazyGet('clx/clxmsg'),
        ];



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Hari K T

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Jul 31, 2020, 12:15:01 AM7/31/20
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Is there a full sample code that you can put in gist. So we can run 

php sample.php

I believe there is some other issue in code.

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Chris Johnson

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Jul 31, 2020, 1:09:43 PM7/31/20
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You are correct.  There was another obscure problem in the code.  The parent and child constructors did not match, e.g.:
class Parent {
    public function __construct(Logger $log, Template $template) {  }
}
class Child extends Parent {
    public function __construct(Template $template, string $path) {  }
}

It is very strange that this did not cause any error during construction, but rather only failed later when an uninitialized property was used.

Thank you for the reply!

Hari K T

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Jul 31, 2020, 1:13:52 PM7/31/20
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Glad to know you were able to fix it.

Some times debugging di is a mess. ;) .

One thing I was sure Aura.Di is very stable. 

Let me Thank our developers and consumers for their awesome work.

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