CakePHP 3.0 Namespace

cake3ns.markdown

CakePHP Core

• Core namespace: Cake
• Namespace will follow the directories, ie. Cake\Cache\Engine\ApcEngine, Cake\Controller\Controller
• View files don't need namespaces
• Basic functions will not be namespaced as well
• Use the class loader defined by the PHP Standard Group, see https://gist.github.com/562509
• Suffixes will not be removed (ie. HtmlHelper will be Cake\View\Helper\HtmlHelper instead of Cake\View\Helper\Html)
• Remove App::uses()
• Remove filemap
• Support full class name in configurations, ie. DebugKit\Controller\Component\ToolbarComponent instead of DebugKit.Toolbar

Plugins

• Plugin must use namespaces
• The default top level namespace will be the same of plugin name, but can be configured a custom namespace using the Plugin::load()

Applications

• Application must use namespaces
• Include in core.php a configuration to indicate the application namespace (empty for global)

We should also keep in mind that for many classes the classname will rarely be typed. Behaviors, helpers, and components (all currently suffixed) are rarely used with a suffix as the ObjectCollections responsible for loading them trim off the suffix.

Off of mark's comment - assuming an object collection is still used - rarely being typed (or perhaps more specifically - rarely typing new Class() ) means to a large extent the problem that suffixes solve when applied to 5.3+ doesn't exist. It also means suffixes won't hurt because you won't be typing them either. What we're really discussing therefore is if we want Foo/Controller/BarController.php or Foo/Controller/Bar.php. Personally - I'd prefer to have to type less.

Mark's point is very valid, most of the class names are not going to be typed by the user, so that should not be a big concern. What I do not want to see in CakePHP is having to address the full name of a class inside the core like 'new \My\Long\Namespaced\Class()', that will be a lot of typing to do. Also, I'm very happy with the fuzzy file search now, since I don't confuse anymore the Model with ModelTask, as I did hundreds of times when working on 1.3 (and stupidly started editing Security instead of SecurityComponent). Going back to that would be a little sad.

For plugins we should use author/creator name as top level in the namespace. For eg. if i want to use simultaneously CakeDC's Search plugin and ADmad' Search plugin (with all classes named similarly), it would be possible only if author name is top level in namespace.

@ADmad won't that create an issue in the filesystem as well? Both plugins will be expecting to be in app/Plugin/Search/. We'd have to add even more configuration to allow custom filepath -> namespace pairs. And additionally require more namespaces. I think its worth asking how often we expect this to happen and whether or not this can be solved by ignoring the problem. If the community just chooses more unique names for things, then there is no need for all this additional configuration, namespace & filepath resolution hijinks. It feels like we're trying to solve a people/communication issue with computers.

@markstory Well if were to include author name as top level in namespace, then as per PSR-0 wouldn't the folders be app/Plugin/CakeDC/Search and app/Plugin/ADmad/Search ?

@ADmad I implemented and forgot to update this document. You will be able to put the files as you described, but you will have to setup the custom namespace in the Plugin::load(). Ie, Plugin::load('ADSearch', array('namespace' => 'ADmad\Search')) will load files on APP/Plugin/ADmad/Search/....

So you can use like $components = array('ADSearch.PrgComponent');.

I will update the document with that.

@jrbasso That takes care of two plugins with same name. Will that also allow me to simultaneously load PrgComponent from both the Search plugins? If that's the case then I am happy :)

Yes, you can use the className option available in the collections, so you can load simultaneously like that:

public $components = array(
  'ADPgr' => array(
    'className' => 'ADmad\Search\Controller\Component\PgrComponent'
  ),
  'CakePgr' => array(
    'className' => 'CakeDC\Search\Controller\Component\PgrComponent'
  )
);
// use $this->ADPgr and $this->CakePgr

Silly me, totally forget we already have classname aliasing.