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Silva 2.3 beta1 Released

Publication date: 5.August.2010, 18:48

After a sneak preview at Europython, Infrae is pleased to announce the beta1 release of Silva 2.3. This release adds a slew of new features for users, developers, and system administrators. The most important point is that it uses Python 2.6 and Zope 2.12 (it won’t work with Python 2.4 or any previous version of Zope).

User features

  • In Kupu images and linked objects use references so the content objects can be moved across the site without breaking links.
  • The forms editor is gone, Documents (and News items in Silva News) are now rendered by default with XSLT.
  • Silva Links, Silva Ghost Folders, Silva Ghosts, Silva Indexers and Silva Find also use the same reference mechanism.
  • A content object cannot be deleted if it is the target of a reference. This prevents having broken links.
  • The XML import/export has been improved to preserve proper references on import independent of the export location. You cannot export content objects that have a reference target outside of the export tree.
  • A javascript pop up has been added to select references. The pop up uses a REST API to query the site.
  • Silva supports WSGI servers. It is now the recommended way to run Silva. You can use Paste or Apache’s mod_wsgi.

Developer features

  • z3c form has been replaced in favor of zeam.form.
  • The SMI partially uses silva.core.layout.
  • Management of HTTP response headers has been improved.
  • Various code optimizations have been performed.
  • Many tests have been added, cleaned, refactored,  and improved.
  • A new test setup system makes testing easier.

Removed products

  • The Old SilvaLayout products is no longer distributed by default.
  • XMLWidgets are gone.

Silva for mobile devices

Silva integrates with Mobi, a middleware suite for detecting mobile devices. Silva provides a layout system that is able to choose the best presentation for a mobile device or computer.

For more technical information on Mobi have a look at the product page:

Silva News Network

  • Silva News Network 2.9 has been refactored with improved calendaring functionality.

Check out

 See for extensive installation documentation.

What is Silva?

Silva is a powerful CMS for organizations that manage multiple or complex websites. Content is stored in clean and futureproof XML, independent of layout and presentation. Features include versioning, workflow system, integral visual editor (Kupu), content reuse, sophisticated access control, multi–site management, extensive import/export facilities, fine–grained templating, and hi–res image storage and manipulation.

For more complete information, see the Silva Product Pages at


Silva 2.3 should be installed using buildout:

or using Paster by selecting the development distribution. For more information on the Silva installation procedure see:


FMI contact Kit Blake, kitblake at infrae com, +31 10 243 7051.