[Cubicweb] [ANNOUNCE] cubicweb 3.20.0 released

Julien Cristau julien.cristau at logilab.fr
Wed Jan 7 16:30:28 CET 2015


I'm happy to announce the release of CubicWeb 3.20.0 (and 3.20.1, to fix
a stupid mistake in .0).  The highlight of this release is the
implementation of virtual relations and computed attributes (CWEP002,

Some more changes that might be of interest, taken from the doc/3.20.rst
file in the CubicWeb source tree:

What's new in CubicWeb 3.20

New features

* virtual relations: a new ComputedRelation class can be used in
  schema.py; its `rule` attribute is an RQL snippet that defines the new

* computed attributes: an attribute can now be defined with a `formula`
  argument (also an RQL snippet); it will be read-only, and updated

  Both of these features are described in `CWEP-002`_, and the updated
  "Data model" chapter of the CubicWeb book.

* cubicweb-ctl plugins can use the ``cubicweb.utils.admincnx`` function
  to get a Connection object from an instance name.

* new 'tornado' wsgi backend

* session cookies have the HttpOnly flag, so they're no longer exposed to

* rich text fields can be formatted as markdown

* the edit controller detects concurrent editions, and raises a ValidationError
  if an entity was modified between form generation and submission

* cubicweb can use a postgresql "schema" (namespace) for its tables

* "cubicweb-ctl configure" can be used to set values of the admin user
  credentials in the sources configuration file

* in debug mode, setting the _cwtracehtml parameter on a request allows tracing
  where each bit of output is produced

.. _CWEP-002: http://hg.logilab.org/review/cwep/file/tip/CWEP-002.rst

API Changes

* ``ucsvreader()`` and ``ucsvreader_pb()`` from the ``dataimport`` module have
  2 new keyword arguments ``delimiter`` and ``quotechar`` to replace the
  ``separator`` and ``quote`` arguments respectively. This makes the API match
  that of Python's ``csv.reader()``.  The old arguments are still supported
  though deprecated.

* the migration environment's ``remove_cube`` function is now called ``drop_cube``.

* cubicweb.old.css is now cubicweb.css.  The previous "new"
  cubicweb.css, along with its cubicweb.reset.css companion, have been

* the jquery-treeview plugin was updated to its latest version

Deprecated Code Drops

* most of 3.10 and 3.11 backward compat is gone; this includes:
  - CtxComponent.box_action() and CtxComponent.build_link()
  - cubicweb.devtools.htmlparser.XMLDemotingValidator
  - various methods and properties on Entities, replaced by cw_edited and cw_attr_cache
  - 'commit_event' method on hooks, replaced by 'postcommit_event'
  - server.hook.set_operation(), replaced by Operation.get_instance(...).add_data()
  - View.div_id(), View.div_class() and View.create_url()
  - `*VComponent` classes
  - in forms, Field.value() and Field.help() must take the form and the field itself as arguments
  - form.render() must get `w` as a named argument, and renderer.render() must take `w` as first argument
  - in breadcrumbs, the optional `recurs` argument must be a set, not False
  - cubicweb.web.views.idownloadable.{download_box,IDownloadableLineView}
  - primary views no longer have `render_entity_summary` and `summary` methods
  - WFHistoryVComponent's `cell_call` method is replaced by `render_body`
  - cubicweb.dataimport.ObjectStore.add(), replaced by create_entity
  - ManageView.{folders,display_folders}


Julien Cristau          <julien.cristau at logilab.fr>
Logilab		        http://www.logilab.fr/
Informatique scientifique & gestion de connaissances
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