Mercurial > genshi > genshi-test
view doc/upgrade.txt @ 653:ca37a9301a20
Fix test to work on Python 2.5.1 which has a different exception message.
author | cmlenz |
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date | Thu, 22 Nov 2007 19:19:17 +0000 |
parents | 9ada030ad986 |
children | 812671b40022 |
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Upgrading Genshi ================ .. contents:: Contents :depth: 2 .. sectnum:: Upgrading from Genshi 0.4.x to 0.5.x ------------------------------------ Genshi 0.5 introduces a new, alternative syntax for text templates, which is more flexible and powerful compared to the old syntax. For backwards compatibility, this new syntax is not used by default, though it will be in a future version. It is recommended that you migrate to using this new syntax. To do so, simply rename any references in your code to ``TextTemplate`` to ``NewTextTemplate``. To explicitly use the old syntax, use ``OldTextTemplate`` instead, so that you can be sure you'll be using the same language when the default in Genshi is changed (at least until the old implementation is completely removed). The default error handling mode has been changed to "strict". This means that accessing variables not defined in the template data will now generate an immediate exception, as will accessing object attributes or dictionary keys that don't exist. If your templates rely on the old lenient behavior, you can configure Genshi to use that instead. See the documentation for details on how to do that. But be warned that lenient error handling may be removed completely in a future release. Upgrading from Genshi 0.3.x to 0.4.x ------------------------------------ The modules ``genshi.filters`` and ``genshi.template`` have been refactored into packages containing multiple modules. While code using the regular APIs should continue to work without problems, you should make sure to remove any leftover traces of the files ``filters.py`` and ``template.py`` in the ``genshi`` package on the installation path (including the corresponding ``.pyc`` files). This is not necessary when Genshi was installed as a Python egg. Results of evaluating template expressions are no longer implicitly called if they are callable. If you have been using that feature, you will need to add the parenthesis to actually call the function. Instances of ``genshi.core.Attrs`` are now immutable. Filters manipulating the attributes in a stream may need to be updated. Also, the ``Attrs`` class no longer automatically wraps all attribute names in ``QName`` objects, so users of the ``Attrs`` class need to do this themselves. See the documentation of the ``Attrs`` class for more information. Upgrading from Markup --------------------- Prior to version 0.3, the name of the Genshi project was "Markup". The name change means that you will have to adjust your import statements and the namespace URI of XML templates, among other things: * The package name was changed from "markup" to "genshi". Please adjust any import statements referring to the old package name. * The namespace URI for directives in Genshi XML templates has changed from ``http://markup.edgewall.org/`` to ``http://genshi.edgewall.org/``. Please update the ``xmlns:py`` declaration in your template files accordingly. Furthermore, due to the inclusion of a text-based template language, the class:: markup.template.Template has been renamed to:: genshi.template.MarkupTemplate If you've been using the Template class directly, you'll need to update your code (a simple find/replace should do—the API itself did not change).