doc/3.20.rst
author Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
Thu, 28 Mar 2013 19:24:46 +0100
changeset 10123 c390c444de06
parent 10121 23af005426bf
child 10131 7e6b7739afe6
permissions -rw-r--r--
[server] refactor cleanup() code used by "cubicweb-ctl delete" Try to make each logical step (i.e. "delete database" and "delete user") a bit more visible and explicit. This is a preparatory work to easily plug the "delete namespace" feature.
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What's new in CubicWeb 3.20
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===========================
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New features
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------------
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* virtual relations: a new ComputedRelation class can be used in
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  schema.py; its `rule` attribute is an RQL snippet that defines the new
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  relation.
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* computed attributes: an attribute can now be defined with a `formula`
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  argument (also an RQL snippet); it will be read-only, and updated
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  automatically.
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  Both of these features are described in `CWEP-002`_, and the updated
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  "Data model" chapter of the CubicWeb book.
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* cubicweb-ctl plugins can use the ``cubicweb.utils.admincnx`` function
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  to get a Connection object from an instance name.
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.. _CWEP-002: http://hg.logilab.org/review/cwep/file/tip/CWEP-002.rst
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API Changes
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-----------
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* ``ucsvreader()`` and ``ucsvreader_pb()`` from the ``dataimport`` module have
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  2 new keyword arguments ``delimiter`` and ``quotechar`` to replace the
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  ``separator`` and ``quote`` arguments respectively. This makes the API match
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  that of Python's ``csv.reader()``.  The old arguments are still supported
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  though deprecated.
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* the migration environment's ``remove_cube`` function is now called ``drop_cube``.
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* cubicweb.old.css is now cubicweb.css.  The previous "new"
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  cubicweb.css, along with its cubicweb.reset.css companion, have been
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  removed.
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Deprecated Code Drops
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----------------------
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* most of 3.10 and 3.11 backward compat is gone; this includes:
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  - CtxComponent.box_action() and CtxComponent.build_link()
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  - cubicweb.devtools.htmlparser.XMLDemotingValidator
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  - various methods and properties on Entities, replaced by cw_edited and cw_attr_cache
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  - 'commit_event' method on hooks, replaced by 'postcommit_event'
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  - server.hook.set_operation(), replaced by Operation.get_instance(...).add_data()
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  - View.div_id(), View.div_class() and View.create_url()
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  - `*VComponent` classes
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  - in forms, Field.value() and Field.help() must take the form and the field itself as arguments
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  - form.render() must get `w` as a named argument, and renderer.render() must take `w` as first argument
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  - in breadcrumbs, the optional `recurs` argument must be a set, not False
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  - cubicweb.web.views.idownloadable.{download_box,IDownloadableLineView}
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  - primary views no longer have `render_entity_summary` and `summary` methods
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  - WFHistoryVComponent's `cell_call` method is replaced by `render_body`
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  - cubicweb.dataimport.ObjectStore.add(), replaced by create_entity
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  - ManageView.{folders,display_folders}