z3c.resourceinclude 0.2.1

Machinery to include web resources based on request layer.

Overview

The package is able to include the following types of resources:

• Cascading stylesheets (.css)

• Kinetic stylesheets (.kss)

• Javascript (.js)

Usage

The package operates with browser resources, registered individually or using the resource directory factory.

A simple example:

<configure xmlns="http://namespaces.zope.org/zope"
          xmlns:browser="http://namespaces.zope.org/browser">

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

  <browser:resource name="example.css" file="example.css" />

  <browser:resourceInclude
       layer="zope.publisher.interfaces.browser.IDefaultBrowserLayer"
       include="example.css"
   />

</configure>

This registration means that whenever the request provides IDefaultBrowserLayer the resource named ‘example.css’ will be included on the page.

To render HTML snippets that include applicable resources, a content provider is provided, see z3c/resourceinclude/provide.py. You may also use one of the viewlets:

<browser:viewlet
   name="resourceinclude"
   class="z3c.resourceinclude.viewlets.CacheOneHourViewlet"
   permission="zope.View" />

A convenience method is provided to require a given resource layer:

>>> from z3c.resourceinclude import include
>>> include(IMyLayer)

Ordering

Resources will be included in the order they’re registered for inclusion; within an include-definition, order is respected only for resources of similar kind.

Merging

When not in ‘devmode’, the resource collector will automatically merge resources, giving them a filename based on the contents (sha digest).