CODEWITHSUNDEEP
phpoopnamespaces
Vincent
Vincent

Reputation: 1730

How to use namespace in a parent class constructor

I have a class named Service_B which extends a custom service class.

This custom service class requires one single object named Reader in its __construct() in order to instantiate properly.

The parent service is defined as follow

namespace Vendor\Services;

abstract class Service{

    function __construct(Vendor\Services\Reader $reader){
    }
}

Service_B is defined as follow:

namespace Vendor\Services;    

class Service_B extends Service{

    function __construct(){
        parent::__construct(new \Vendor\Services\Reader());
    }
}

Reader do have the following line at the top of the file:

use Vendor\Services;

Class files are organized like this:

Vendor/Services/Service_B.php
Vendor/Services/Reader.php

Question: When I instantiate Service_B, I get the following error message:

Fatal error: Class 'Vendor\Services\Reader' not found

I don't understand why I get this error since I think I am using the proper namespaces declarations. Thank you

Upvotes: 1

Views: 571

Answers (1)

Moppo
Moppo

Reputation: 19285

On top of your Reader class place:

//This will declare the Reader class in this namespace
namespace Vendor\Services;

and remove:

//THIS IS A WRONG DIRECTIVE: you're telling PHP to use the Vendor\Services class but it doesn't even exist     
use Vendor\Services;

Then modify the Service_B class as follow:

namespace Vendor\Services;    

//i think this should extend Service, as it's calling the parent constructor
class Service_B extends Service
{
    function __construct(){
        parent::__construct( new Reader() );
    }
}

This way all yours 3 classes will be in the same namespace, and the Reader class should be found without explicit namespace prefix

Upvotes: 3

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