[FIXED] How to make Composer/PSR-4 make accepting my second namespace in a subfolder?

Issue

Given is a Symfony 4.4 Application (specifically, Sylius) using PSR-4 for autoloading:

    "autoload": {
        "psr-4": {
            "App\\": "src/",
            "KYCBundle\\": "src/KYCBundle/"
        }
    },

Placing all Controllers and Entities and so on under the src directory works well so far:

+ src
  - Controllers
  - Entities

And the corresponding namespace is e.g.:

namespace App\Controller\Admin;

But for the second namespace KYCBundle this does not work.

+ src
   + KYCBundle
     - Controllers
     - Command
     - Entities

When I want to use Classes with the following namespace declaration:

namespace KYCBundle\Command\AccessTokenCommand

this will give an error:

Expected to find class "App\KYCBundle\Command\AccessTokenCommand" in file " ./src/KYCBundle/Command/AccessTokenCommand.php" while importing services from resource "../src/*", but it was not found! Check the namespace prefix used with the resource.

When I change the namespace from KYCBundle\Command into App\KYCBundle\Command thinks work well. Also, when I delete the second Line in PSR-4 configuration, things will not change which basically means that whether with or without the PSR-4 configuration for KYCBundle is not used at all.

How to let me use the namespace KYCBundle as the root level without the prefix App?

Solution

Do not put the classes from your second namespace within src. Avoid having nested namespaces "roots".

Either put your second namespace outside src. E.g.:

- ./src
- ./KYCBundle

Or have different roots within src:

- ./src/App
- ./src/KYCBundle

Logically, modify your composer.json file to match your directory structure.

Answered By - yivi

Answer Checked By - Mildred Charles (PHPFixing Admin)