Content Proxy (1.0)

bda.contentproxy

Overview

Module providing some flavour of content proxy for Plone. It works for all kinds of Archetypes based types.

Consider that the Archetypes UID must be present in the portal_catalog (default in plone 3) and the view for the Type must come along with a main macro in it's view, i.e.:

<metal:main fill-slot="main">
 <tal:main-macro metal:define-macro="main">
 
 <!-- type view goes here -->
 
 </tal:main-macro>
</metal:main>

This macro is called on the proxied content and is inserted into the main slot of the main_template in the current context.

Two kinds of proxy behaviour are provided:

• A placeless proxy
  This is a simple BrowserView named proxy, with its own traverser resolving the trailing part of the URL as the Archetype UID, i.e.:

  http://your.domain.net/some/path/@@proxy/0c6e067822a520eabcfdd1e67d209d96
  

• The other way is a simple Archetype with a UID reference field The first kind of proxy may takes place when rendering search results, the other one might be used to insert remote content to a specified place in the folder hirarchy.

KSS

Archetypes provides inline editing stuff. Since the proxied content is indeed rendered as is, the KSS rules for archetypes apply, but on the wrong context, so we set a condition inside the kssregistry on at.kss resource to determine wether it should be loaded or not.

If you use the proxy not via the placeless proxy or the proxy type, but out of your own application, you might have to add your own conditional rule to avoid at.kss to be loaded. This can be done by the IContentProxiedRule interface.

To provide your custom rule, implement this interface and register your object as multiadapter for context and request, i.e.:

<adapter
 for="foo.bar.interfaces.IBaz
 zope.publisher.interfaces.http.IHTTPRequest"
 factory="foo.bar.baz.Baz"/>

A Base Rule object as well as a default rule object exist in bda.contentproxy.proxy. The default rule is registered for *. if you want to provide your own general rule, you have to define your rule implementation in an overrides.zcml, but its strongly recommended to avoid this due to several applications registering their own general rules, that might end in confusing side effects. better bind to the context interface explicit.

Installation

1. Make the egg available in your instance,
2. Import the bda.contentproxy extension profile in your plone instance.

This Product is tested with Plone 3.0

Credits

• Written by Robert Niederreiter Squarewave Computing, BlueDynamics Alliance, Austria
• Ideas and contributions: Jens Klein BlueDynamics Alliance, Klein & Partner KEG, Austria
• This addon is an outcome of the UN ILO Better Work project.