Bug: php spark migrate:create File -n NameSpace doesn't create migration class under NameSpace/Database/Migrations directory with composer autoload

[samsonasik]

Currently, when running migration create for module namespace, eg: Album, while Album namespace already in composer autolaod, it doesn't create the migration class to Album/Database/Migrations directory. Instead, It created file in app/Database/Migrations directory.

It needs manually add 'namespace' to Config/Autoload class under app/Config directory:

		$psr4 = [
			'App'         => APPPATH,                // To ensure filters, etc still found,
			APP_NAMESPACE => APPPATH,                // For custom namespace
			'Config'      => APPPATH . 'Config',
			'Album'       => ROOTPATH . 'modules/Album',
		];

to make it generated to correct Album/Database/Migrations directory, while I think it should not, as Album namespace already in composer.json autoload:

	"autoload": {
		"psr-4": {
			"Album\\": "modules/Album"
		}
	},

CodeIgniter 4 version
4.0.2

Expected behavior, and steps to reproduce if appropriate
It create the migration class to Album/Database/Migrations directory:

Context

• OS: OSX
• Web server: Apache
• PHP version 7.4

[MGatner]

It looks like CreateMigration is using an old way of searching namespaces, maybe the code is older?

https://github.com/codeigniter4/CodeIgniter4/blob/develop/system/Commands/Database/CreateMigration.php#L127

I think switching this to use Autoloader:: getNamespace() should fix the issue.