z3c.jbot 0.4

Drop-in template overrides.

Overview

The z3c.jbot (or “Just a bunch of templates”) package allows drop-in page template overrides. It works on Zope 2 and Zope 3. The Chameleon rendering engine is supported [1].

Any template that is defined as a class-attribute can be overriden using jbot, e.g. those used in views, viewlets and portlets. The template overrides may be registered for any request layer or only a specific layer.

To override a particular template, first determine its canonical filename. It’s defined as the path relative to the package within which the template is located; directory separators are replaced with dots.

Example:

Suppose you want to override: /plone/app/layout/viewlets/logo.pt

You would use the filename: plone.app.layout.viewlets.logo.pt

Simply drop the file in a directory and register that directory for use with jbot using a ZCML-directive:

<include package="z3c.jbot" file="meta.zcml" />

<browser:templateOverrides
    directory="<path>"
    layer="<layer>" />

Use of this package adds a small (2-3 ms per request on Plone) to the total application response time.

[1]

To enable Chameleon on Zope 2, use the five.pt package (CMF-apps like Plone should use cmf.pt which adds full support).

Author

Malthe Borch <[e-mail]>

Changes

0.4 (2009-10-15)

• Added Chameleon-support.

• Reimplemented override logic; the total usage cost is now reduced to an insignificant amount. Meanwhile, only templates that are defined as class-attributes (e.g. on views, viewlets and portlets) can be overriden.

0.3 (2009-09-26)

• Improved test coverage.

• Refactored code, improving performance.

• Fixed issue with multiple layers.

0.2 (2008-07-14)

• Added layer support.

0.1 (2007-11-27)

• Initial public release.