It is now possible to follow events' and organisations' versions. Refs #15

app/controllers/versions_controller.rb

@@ -0,0 +1,15 @@
+# Supervise all the actions done
+class VersionsController < ApplicationController
+  def index
+    respond_to do |format|
+      format.html do
+        @search = PaperTrail::Version.search params[:q]
+        @search.sorts = 'created_at desc' if @search.sorts.empty?
+        @versions = @search.result.page params[:page]
+      end
+      format.rss do
+        @versions = PaperTrail::Version.order('created_at desc').limit(20)
+      end
+    end
+  end
+end

app/models/event.rb

@@ -4,7 +4,7 @@
 class Event < ActiveRecord::Base
   extend SimpleCalendar
   strip_attributes
-  has_paper_trail
+  has_paper_trail ignore: [:last_updated, :secret, :submitter]
 
   belongs_to :region
   has_many :notes, dependent: :destroy

app/models/orga.rb

@@ -1,6 +1,7 @@
-# Groups related to this agenda
+# Organisations related to this agenda
 class Orga < ActiveRecord::Base
-  has_paper_trail
+  strip_attributes
+  has_paper_trail ignore: [:last_updated, :secret, :submitter]
 
   belongs_to :region
   belongs_to :kind
@@ -54,4 +55,8 @@ class Orga < ActiveRecord::Base
   def name_as_tag
     name.gsub(/\AL'/, '').gsub(/[\s\*']/, '-').delete ':'
   end
+
+  def to_s
+    "[#{kind.name}] #{name}"
+  end
 end

app/views/layouts/application.html.haml

@@ -62,6 +62,9 @@
         = link_to orgas_path do
           %em.fa.fa-users
           = Orga.model_name.human.pluralize
+        = link_to versions_path do
+          %em.fa.fa-exchange
+          = t 'versions.index.title'
         = link_to application_infos_path do
           %em.fa.fa-info
           = t '.infos'

app/views/versions/index.haml

@@ -0,0 +1,49 @@
+%h2
+  %em.fa.fa-exchange
+  = title t '.title'
+
+%table.list.autopagerize_page_element
+  %thead
+    %th.event= sort_link @search, :event
+    %th.whodunnit= sort_link @search, :whodunnit
+    %th.object= sort_link @search, :object_id
+    %th.created_at= sort_link @search, :created_at
+    %th.view/
+
+  %tbody
+    - @versions.each do |version|
+      :ruby
+        if version.event == 'create'
+          object = version.item_type.constantize.find version.item_id
+        else
+          object = version.reify
+        end
+        next unless object.moderated?
+
+        changes = ''
+        if version.event == 'update'
+          version.changeset.each do |key, val|
+            changes += version.item_type.constantize.human_attribute_name(key)
+            changes += ': '
+            if key == 'description'
+              changes += Differ.diff(val[1], val[0]).to_s
+            else
+              changes += "#{val[0]} -> #{val[1]}"
+            end
+            changes += '
+            '
+          end
+          changes = strip_tags(changes).gsub(/^\s*/, '')
+        end
+
+      %tr
+        %td{ title: changes }= t ".#{version.event}_html"
+        %td= User.find version.whodunnit if version.whodunnit
+        %td= object
+        %td= l version.created_at
+        %td
+          %a{ href: polymorphic_path(version.item_type.tableize.singularize,
+                                     id: version.item_id) }
+            %em.fa.fa-eye
+
+= paginate @versions

app/views/versions/index.rss.builder

@@ -0,0 +1,78 @@
+require 'differ/format/patch'
+Differ.format = Differ::Format::Patch
+
+xml.instruct!
+
+xml.rdf :RDF,
+        'xmlns:rdf' => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
+        'xmlns' => 'http://purl.org/rss/1.0/',
+        'xmlns:dc' => 'http://purl.org/dc/elements/1.1/',
+        'xmlns:sy' => 'http://purl.org/rss/1.0/modules/syndication/',
+        'xmlns:admin' => 'http://webns.net/mvcb/',
+        'xmlns:cc' => 'http://web.resource.org/cc/',
+        'xmlns:content' => 'http://purl.org/rss/1.0/modules/content/',
+        'xmlns:georss' => 'http://www.georss.org/georss' do
+  xml.channel 'rdf:about' => root_url do
+    title = t 'layouts.application.title'
+    if params[:region].present? && params[:region] != 'all'
+      region = Region.find(params[:region]).name
+      title += " [#{region}]"
+    end
+    xml.title title
+    xml.description t 'layouts.application.subtitle'
+    xml.link root_url
+    xml.dc :language, 'fr'
+    xml.dc :creator, root_url
+
+    xml.items do
+      xml.rdf :Seq do
+        @versions.each do |version|
+          xml.rdf :li, 'rdf:resource' =>
+            polymorphic_url(version.item_type.tableize.singularize,
+                            id: version.item_id)
+        end
+      end
+    end
+  end
+
+  @versions.each do |version|
+    if version.event == 'create'
+      object = version.item_type.constantize.find version.item_id
+    else
+      object = version.reify
+    end
+    next unless object.moderated?
+    url = polymorphic_url(version.item_type.tableize.singularize,
+                          id: version.item_id)
+
+    xml.item 'rdf:about' => url do
+      xml.title "#{version.event} - #{object}"
+      xml.link url
+      domain = root_url.gsub(/www/, '').gsub(/http.?:../, '').gsub(/:.*/, '')
+      xml.dc :identifier, "version_#{version.id}@#{domain}"
+      xml.dc :date, version.created_at.iso8601
+
+      if object.try(:description)
+        if version.event == 'create'
+          xml.description strip_tags object.description
+          xml.content(:encoded) { xml.cdata! object.description }
+        elsif version.event == 'update'
+          changes = ''
+          version.changeset.each do |key, val|
+            changes += version.item_type.constantize.human_attribute_name(key)
+            changes += ': '
+            if key == 'description'
+              changes += Differ.diff(val[1], val[0]).to_s
+            else
+              changes += "#{val[0]} -> #{val[1]}"
+            end
+            changes += '
+            '
+          end
+          xml.description changes
+          xml.content(:encoded) { xml.cdata! changes }
+        end
+      end
+    end
+  end
+end

config/locales/views/en.yml

@@ -380,15 +380,7 @@ reason:
       signature: Have a good day!
     accept:
       subject: "Organisation '%{subject}' moderated"
-      body: "Organisation has been modérée by %{moderator}.
-\nYou can acces it here:"
-      edit_link: "Vous pouvez modifier cette organisation ultérieurement pour y ajouter des
-\nprécisions en vous rendant à l'adresse:"
-      delete_link: "You can also delete it using the address:"
-      signature: Thank you for your contribution and see you soon!
-    accept:
-      subject: "Organisation '%{subject}' moderated"
-      body: The orgnisation has been moderated by %{author}.
+      body: The organisation has been moderated by %{author}.
       access: "You can consult it here:"
       signature: Thanks for your contribution!
     destroy:
@@ -399,3 +391,10 @@ reason:
         moderation team.
       reminder: "Reminder, here is your organisation's content:"
       signature: With all our thanks for your contribution
+
+  versions:
+    index:
+      title: Versions
+      create_html: <em class='fa fa-plus-circle'></em>
+      update_html: <em class='fa fa-exchange'></em>
+      destroy_html: <em class='fa fa-trash'></em>

config/locales/views/fr.yml

@@ -391,3 +391,10 @@ l'adresse:"
         de modérateurs.
       reminder: "Pour rappel, voici le contenu de l'organisation:"
       signature: Avec tous nos remerciements pour votre contribution
+
+  versions:
+    index:
+      title: Versions
+      create_html: <em class='fa fa-plus-circle'></em>
+      update_html: <em class='fa fa-exchange'></em>
+      destroy_html: <em class='fa fa-trash'></em>

config/routes.rb

@@ -3,6 +3,7 @@ Rails.application.routes.draw do
   get 'application/contact'
   get 'application/rules'
   get 'stats', to: 'stats#index'
+  get 'versions', to: 'versions#index'
 
   resources :users
   resources :events do

db/migrate/20160109203136_add_object_changes_to_versions.rb

@@ -0,0 +1,10 @@
+# Can trace the exact changes to paper trailed objects
+class AddObjectChangesToVersions < ActiveRecord::Migration
+  # The largest text column available in all supported RDBMS.
+  # See `create_versions.rb` for details.
+  TEXT_BYTES = 1_073_741_823
+
+  def change
+    add_column :versions, :object_changes, :text, limit: TEXT_BYTES
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160107203117) do
+ActiveRecord::Schema.define(version: 20160109203136) do
 
   create_table "active_admin_comments", force: :cascade do |t|
     t.string   "namespace",     limit: 255
@@ -121,6 +121,7 @@ ActiveRecord::Schema.define(version: 20160107203117) do
     t.text     "tag"
     t.text     "tags",                        default: ""
     t.text     "diaspora"
+    t.text     "object_changes"
   end
 
   add_index "orgas", ["kind_id"], name: "index_orgas_on_kind_id"
@@ -166,12 +167,13 @@ ActiveRecord::Schema.define(version: 20160107203117) do
   end
 
   create_table "versions", force: :cascade do |t|
-    t.string   "item_type",  null: false
-    t.integer  "item_id",    null: false
-    t.string   "event",      null: false
+    t.string   "item_type",                         null: false
+    t.integer  "item_id",                           null: false
+    t.string   "event",                             null: false
     t.string   "whodunnit"
     t.text     "object"
     t.datetime "created_at"
+    t.text     "object_changes", limit: 1073741823
   end
 
   add_index "versions", ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id"