[RFC] class_name:namespace

---- En jue, 25 feb 2021 21:41:40 +0100 Nikita Popov nikita.ppv@gmail.com escribió ----

Hi internals,

I would like to present a possible new RFC( "class_name:namespace" ) for
your consideration.

As you know, namespaces are very important nowdays. They are used in
autoloaders, Frameworks, CMS, ...

Maybe, you are used to code something similar to this:

use MyProject\MyHelpers\MyClass;

echo substr( MyClass::class, 0, strrpos( MyClass::class, '\\'));

or perhaps:

use MyProject\MyHelpers\MyClass;

$splited_class_name = explode( '\\', MyClass::class );
array_pop($splited_class_name);
echo $namespace = implode('\\', $splited_class_name );

Other option is:

namespace MyProject\MyHelpers;

class MyClass {
      public const NAMESPACE = __NAMESPACE__;
}

However... :(

namespace MyProject\MyServices;

class MyNewClass  extends MyClass{
}

echo MyNewClass::NAMESPACE; //MyProject\MyHelpers

All of these examples are ways for getting a thing which PHP compiler
would resolver fast.

It would be fantastic can code:

MyClass::namespace or static::namespace( for example, in abstract classes )

Don't you think the same ?

Could you please share the use case(s) you have in mind for this?

Regards,
Nikita

Hi, Nikita,

Yes, of course. For example, loading views using TemplateViews pattern[1]:

namespace MyProjects\Framework;

abstract class TemplateView {
   private const VIEW_SUBPATH = '/views/';

   protected function includeView( string $viewName ) {
        $filePath = str_replace('\\', '/', static::namespace ).  self::VIEW_SUBPATH;
        $fileName =$filePath.$viewName.'.tpl';
        
        if( file_exists($fileName) ) {
            return include $fileName;
        }

        error_log("Not found view[$viewName] in path $filePath"  };
   }
}

namespace MyProject\CMS\Freelancer\Attachments;

class Budget extends TemplateView {
     
      public function __toString() {
          $this->includeView('full_budget');
      }

}```



Regards
- P.S: Sorry, my mistake with subject. 

[1]: https://dzone.com/articles/practical-php-patterns/practical-php-patterns-9
--
Manuel Canga

Zend Certified PHP Engineer 
Websites: https://manuelcanga.dev | https://trasweb.net
Linkedin: https://es.linkedin.com/in/manuelcanga

Le 25/02/2021 à 21:41, Nikita Popov a écrit :

Could you please share the use case(s) you have in mind for this?

Regards,
Nikita

Hello,

I don't have a concrete example in mind right now, it happens I do need
this sometime.

It's mitigated by the fact I need it in most case when accessing class
reflection in order to introspect it and generate code or documentation
along or I do need to explode the whole class name to introspect
namespace parts.

Nevertheless, it still happens that I do magic with class names without
using the reflection, one use case that comes to mind is a class name to
logical name mapper I've written for converting PHP domain class names
to logical PHP-free message names for a bus in an heterogeneous infra
based upon a naming convention (using the namespaces as a basis for
string replacement).

--

Pierre