AtomPubServer
=============
WARNING : This plugin just probably works with rails edge version(2.0RC)

This plugin allows your app to create an atomPub service document from its controllers.


Example
=======

==First you must add the term "acts_as_collection" to the controllers that manage your resorces.
    Mandatory options:
        :title => the collection's title
        :workspace => the collection's workspace
        :href => collection's IRI
        :accept => array with MimeType objects that the post and put method accept
    Other available options:
        :categories => array of hashes. Within each hash:
            :href => mandatory if the categories are not fixed
            :fixed => 'yes' or 'no' (DEFAULT 'no')
            :scheme => if the categories are fixed they can inherit from this scheme
            :category => array of hashes. Mandatory if the categories are fixed. Within each hash:
                :term
                :scheme

    Example:

        class PostsController < ApplicationController
            acts_as_collection :title => 'posts', :workspace => 'my blog', :href => 'http://myblog/posts',
                :accept => Mime::ATOM_ENTRY,
                :categories => [{
                    :fixed => 'yes', :scheme => 'http://myblog/tags',
                    :category => [{:term => 'rails'}, {:term => 'plugins'}]
                },
                {:href => 'http://myblog/mysections'}
                ]
        end

==Then you must add the term "acts_as_service_document" to a controller. This controller will have a method called "document_service"
that generates a valid atomPub service document xml.

    Example:

        class ServicesController < ApplicationController
            acts_as_service_document
 
            def index
                render :xml => service_document
            end
        end

        Writting 'http://localhost:3000/services' in your browser you lii get:

            <service>
                <workspace>
                    <atom:title>my blog</atom:title>
                    <collection href="http://myblog/posts">
                        <atom:title>posts</atom:title>
                        <accept>application/atom+xml;type=entry</accept>
                        <categories scheme="http://myblog/tags" fixed="yes">
                            <atom:category term="rails"/>
                            <atom:category term="plugins"/>
                        </categories>
                        <categories href="http://myblog/mysections"/>
                    </collection>
                </workspace>
            </service>
    
    
==In addition, when you declares a controller with the term 'acts_as_collection' this plugin adds a 'before_filter' declaration. 
This filter must be created too, and must be called 'filter_content_type'. It will be only executed before the create and update methods.
The name of create and update methods can be initialized as two environment varible called ENV['COLLECTION_POST_METHOD'] and ENV['ENTRY_PUT_METHOD']. 
Default names are :create and :update.
Please visit http://ryandaigle.com/articles/2007/10/22/what-s-new-in-edge-rails-filters-get-tweaked for more info about the rails 2.0 filters sintax.


==Moreover, this plugin add some MimeType objects specifics for atomPub server implementation:

    Mime::ATOM_ENTRY => 'application/atom+xml;type=entry'
    Mime::ATOM_SVC => 'application/atomsvc+xml'
    Mime::ATOM_CAT => 'application/atomcat+xml'


==Finally, the atomPubServer plugins override the new AtomFeedHelper class in order to allow the developer could include new namespaces to an atom feed.
        The rails 2.0 helper sintax:

            atom_feed do |feed|
                ...
            end

        The atomPubServer sintax:

            atom_feed({'xmlns:app' => 'http://www.w3.org/2007/app', 
                'xmlns:georss' => 'http://www.georss.org/georss/10'}) do |feed|
                ...
            end

Copyright (c) 2007 David Calavera, released under the MIT license