plone.multilingual 0.2b3

Multilingual extensions core package

plone.multilingual
==================

This package contains the core functionality for the next generation multilingual engine.

These are the main artifacts and its purposes:

canonical:
* the canonical organizes the information about a "translation-group"
* it's using a dictionary with language-codes as keys and uuids
(provided by plone.uuid) as values

storage:
* persistent storage, which holds the canonicals in an IOBTree
* the OOBTree's key is the UUID of the content, the according value is the canonical

manager:
* adapter for ITranslatable
* provides the translations API

adapters:
* ITranslationLocator - where to put a translation
* ITranslationIdChooser - generates a valid id for a translation
* ITranslationCloner - copy the language-independent content to the translation
* ITranslationFactory - creates the translation

In order to have a test we have a type called Demo that has an adapter
called DemoLanguage that will allow to get the language of the object::

>>> from plone.multilingual.interfaces import ITranslationManager
>>> from plone.multilingual.interfaces import ILanguage
>>> from plone.app.testing import setRoles, login, TEST_USER_ID, TEST_USER_NAME

>>> portal = layer['portal']
>>> setRoles(portal, TEST_USER_ID, ['Manager'])
>>> login(portal, TEST_USER_NAME)
>>> portal.invokeFactory('Folder', 'ob1', title=u"An archetypes based folder")
'ob1'

>>> ILanguage(portal['ob1']).set_language('ca')

Ensuring that the new object gets its UUID::

>>> from plone.uuid.interfaces import IUUID
>>> ob1_uuid = IUUID(portal['ob1'])
>>> isinstance(ob1_uuid, str)
True

We create a new translation in 'en' language::

>>> ITranslationManager(portal['ob1']).add_translation('en')

We try to create a new translation in 'ca' that already exists::

>>> ITranslationManager(portal['ob1']).add_translation('ca')
Traceback (most recent call last):
...
KeyError: 'Translation already exists'

We try to create a new translation without language::

>>> ITranslationManager(portal['ob1']).add_translation(None)
Traceback (most recent call last):
...
KeyError: 'There is no target language'

We get the 'en' translation::

>>> ITranslationManager(portal['ob1']).get_translation('en')
<ATFolder at /plone/ob1-en>
>>> ILanguage(ITranslationManager(portal['ob1']).get_translation('en')).get_language() == 'en'
True

let's get all the translations::

>>> ITranslationManager(portal['ob1']).get_translations()
{'ca': <ATFolder at /plone/ob1>, 'en': <ATFolder at /plone/ob1-en>}

let's get only the languages::

>>> ITranslationManager(portal['ob1']).get_translated_languages()
['ca', 'en']

has_translation::

>>> ITranslationManager(portal['ob1']).has_translation('en')
True

>>> ITranslationManager(portal['ob1']).has_translation('it')
False

register_translation with invalid language::

>>> ITranslationManager(portal['ob1']).remove_translation('en')
>>> ITranslationManager(portal['ob1']).register_translation('', portal['ob1-en'])
Traceback (most recent call last):
...
KeyError: 'There is no target language'

register a translation with content::

>>> ITranslationManager(portal['ob1']).register_translation('en', portal['ob1-en'])
>>> ITranslationManager(portal['ob1']).get_translations()
{'ca': <ATFolder at /plone/ob1>, 'en': <ATFolder at /plone/ob1-en>}

changing the content-language (there should act a subscriber)::

>>> ILanguage(portal['ob1-en']).set_language('it')
>>> from zope.event import notify
>>> from zope.lifecycleevent import ObjectModifiedEvent
>>> notify(ObjectModifiedEvent(portal['ob1-en']))
>>> ITranslationManager(portal['ob1']).get_translations()
{'ca': <ATFolder at /plone/ob1>, 'it': <ATFolder at /plone/ob1-en>}

test the delete-subscriber::

>>> from OFS.event import ObjectWillBeRemovedEvent
>>> notify(ObjectWillBeRemovedEvent(ITranslationManager(portal['ob1']).get_translation('it')))
>>> ITranslationManager(portal['ob1']).get_translations()
{'ca': <ATFolder at /plone/ob1>}

Default-Adapters
----------------
id-chooser::

>>> from plone.multilingual.interfaces import ITranslationIdChooser
>>> chooser = ITranslationIdChooser(portal['ob1-en'])
>>> chooser(portal, 'es')
'ob1-es'

locator::

>>> ITranslationManager(portal['ob1']).add_translation('es')
>>> child_id = portal.ob1.invokeFactory('Folder', 'ob1_child', language="ca")

>>> from plone.multilingual.interfaces import ITranslationLocator
>>> locator = ITranslationLocator(portal['ob1-en'])
>>> locator('es') == portal
True

>>> child_locator = ITranslationLocator(portal.ob1.ob1_child)
>>> child_locator('es') == portal['ob1-es']
True

>>> ITranslationManager(portal['ob1']).remove_translation('es')

Convert intids to uuids upgrade step
------------------------------------

An upgrade step is available in case of having an existing site with the experimental
0.1 plone.multilingual version::

>>> from plone.multilingual.upgrades.to02 import upgrade

.. note::
You must reinstall the plone.multilingual package in order to install the required new
utility in place before upgrading. If you are using a version of Dexterity below 2.0, you
must install the package plone.app.referenceablebehavior and enable the *Referenceable*
(plone.app.referenceablebehavior.referenceable.IReferenceable) behavior for all your
Dexterity content types before you attempt to upgrade your site.

You can run the @@pml-upgrade view at the root of your site or follow the upgrade step in
portal_setup > upgrades. If you can't see the upgrade step, press *Show old upgrades* and
select the *Convert translation based initids to uuids (0.1 → 02)*

uninstall-profile
-----------------
::

>>> from plone.app.testing import applyProfile
>>> applyProfile(portal, 'plone.multilingual:uninstall')

we shouldn't find the storage-utility anymore::

>>> from plone.multilingual.interfaces import IMultilingualStorage
>>> gsm = portal.getSiteManager()
>>> gsm.queryUtility(IMultilingualStorage) == None
True

Changelog
=========

0.1a2 - 2011-10-20
------------------

- Updated testing facilities to Plone Core packages style [sneridagh]
- Migrated from bare intids to plone.uuid facilities [sneridagh]
- Due to the previous change from this version to above, it's only compatible with Plone 4.1 and above [sneridagh]
- Added upgrade step and upgrade browser view to convert the 0.1a1 intids based utility to the 0.1a2 uuids based one [sneridagh]


0.1a1 - 2011-10-03
------------------

- Initial version [ramon, awello, sneridagh]