--- a/src/source/dev_guide/traverser.rst Fri Dec 21 15:48:43 2018 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,47 +0,0 @@
-.. _traverser:
-
-PyAMS namespace traverser
-=========================
-
-PyAMS_utils provide a custom URL traverser, defined in package :py:mod:`pyams_utils.traversing`.
-
-The :py:class:`NamespaceTraverser <pyams_utils.traversing.NamespaceTraverser>` is a custom traverser based on default
-Pyramid's *ResourceTreeAdapter*, but it adds the ability to use *namespaces*. Inherited from *Zope3* concept, a
-namespace is a resource path element starting with the « *++* » characters, like this:
-
-.. code-block:: none
-
- http://localhost:5432/folder/content/++ns++argument/@@view.html
-
-In this sample, *ns* is the namespace name. When the traverser detects a namespace, it looks for several named
-adapters (or multi-adapters) to the :py:class:`ITraversable <zope.traversing.interfaces.ITraversable>` interface
-defined in *zope.traversing* package. Adapters lookup with name *ns* is done for the current *context* and *request*,
-then only for the context and finally for the request, in this order. If a traversing adapter is found, it's
-:py:func:`traverse` method is called, with the *attr* value as first argument, and the rest of the traversal stack
-as second one.
-
-This is for example how a custom *etc* namespace traverser is defined:
-
-.. code-block:: python
-
- from pyams_utils.interfaces.site import ISiteRoot
- from zope.traversing.interfaces import ITraversable
-
- from pyams_utils.adapter import adapter_config, ContextAdapter
-
- @adapter_config(name='etc', context=ISiteRoot, provides=ITraversable)
- class SiteRootEtcTraverser(ContextAdapter):
- """Site root ++etc++ namespace traverser"""
-
- def traverse(self, name, furtherpath=None):
- if name == 'site':
- return self.context.getSiteManager()
- raise NotFound
-
-By using an URL like '++etc++site' on your site root, you can then get access to your local site manager.
-
-*argument* is not mandatory for the namespace traverser. If it is not provided, the *traverse* method is called with
-an empty string (with is a default adapter name) as first argument.
-
-Several PyAMS components use custom traversal adapters. For example, getting thumbnails from an image is done
-through a traversing adapter, which results in nicer URLs than when using classic URLs with arguments...