Feed the Masses

Introducing Vice - Outbound Syndication in Plone via the Zope Component Architecture Paul Bugni Center for Public Health Informatics Feed the Masses T: 206.221.7444 F: 206.616.5249 1100 NE 45 th Street, Ste 405 Seattle, WA 98105 www.cphi.washington.edu

Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object]

To publish or broadcast ,[object Object]

“Web Feed” or “News Feed”

Data format for frequently updated content

Content distributors syndicate a web feed

Users can easily subscribe to the feed

Simplifies keeping up with changes

Prevailing syndication formats ,[object Object]

Two prevailing formats (as of mid-2005) ,[object Object],[object Object]

Exposing the myth of RSS compatibility ,[object Object],[object Object]

RSS Stands For? ,[object Object],[object Object],[object Object]

First, there was the mark up language RDF ,[object Object],[object Object]

RSS 0.90 ,[object Object],[object Object]

RSS 0.91 (part 1) ,[object Object]

RSS 0.91 (part 2) ,[object Object]

Confusion ensued ,[object Object]

RSS 1.0 ,[object Object],[object Object],[object Object]

So to clear things up ,[object Object],[object Object],[object Object],[object Object]

RSS 2.0 ,[object Object],[object Object]

IETF (Internet Engineering Task Force)

The Atom syndication format has been adopted as IETF Proposed Standard RFC 4287

RSS 2.0 versus Atom 1.0 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Need For Better Syndication in Plone ,[object Object],[object Object],[object Object]

PLIP #128 Motivation ,[object Object]

PLIP #128 Motivation (continued) ,[object Object]

PLIP #128 ,[object Object],[object Object]

And the name ? ,[object Object],[object Object]

Vice was Born at the (now infamous) BBQ Sprint ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Then Vice Picked up a Sponsor ,[object Object],[object Object],[object Object]

Vice also benefited from additional sprints ,[object Object],[object Object]

Add Vice to the Buildout Eggs ,[object Object],[object Object],[object Object],[object Object]

Include the Vice Configuration Files (a la zcml slug) ,[object Object],[object Object],[object Object]

Install Product in Portal ,[object Object]

Configure for Use ,[object Object],[object Object],[object Object]

Out of the box demo ,[object Object]

Separation of Concerns ,[object Object]

Goal: Make it easy to add additional feed types

Goal: Make it easy to extend beyond common object attributes

How to Manage the Complexity? ,[object Object]

The Previous Approach: ,[object Object],[object Object]

The Downsides ,[object Object],[object Object]

Three Core Concepts ,[object Object],[object Object],[object Object]

Interfaces ,[object Object],[object Object]

Adapters ,[object Object],[object Object]

Types of Components ,[object Object],[object Object],[object Object],[object Object]

Zope Component Architecture ,[object Object],[object Object]

Core Vice Concepts ,[object Object],[object Object]

IFeedable ,[object Object],[object Object],[object Object],[object Object]

IFeed ,[object Object],[object Object]

IFeed ,[object Object],[object Object],[object Object],[object Object]

IFeed Adapters ,[object Object],[object Object]

IFeedItem ,[object Object],[object Object],[object Object]

IFeedItem Adapters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Thus Vice Handles all AT Content Types “out of the box” ,[object Object]

New Type Must Be Adaptable to IFeedItem

Register the Adapter Factory ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Define the IFeedItem Adapter Class ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Page Template for Body of Feed Item ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Adding a new Feed Format ,[object Object]

But there’s a vice sprint going on this weekend! ,[object Object]

Inbound Story? ,[object Object],[object Object],[object Object]

How to get involved ,[object Object],[object Object],[object Object],[object Object],[object Object]

Feed the Masses

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