Add activity models, controllers, and index

app/assets/stylesheets/application.css.sass

@@ -32,3 +32,4 @@ $blueprint-grid-columns: 20
 @import partials/pagination
 @import partials/fonts
 @import partials/articles
+@import partials/activities

app/assets/stylesheets/partials/_activities.sass

@@ -0,0 +1,37 @@
+div.activity
+  +container
+  div.activity_title
+    +column(20)
+    font-size: 1.5em
+    font-family: $display-font
+    margin-bottom: 1em
+    line-height: 0.9
+    span.registration
+      float: right
+      color: #666
+      a
+        font-size: 0.75em
+        color: #333
+        &.participating:before
+          content: ""
+          float: left
+          width: 26px
+          height: 1em
+          background: asset-url("icons/check.png", image) no-repeat
+        &:hover
+          color: #333
+    a
+      color: $link-active-color
+      &:hover
+        color: $link-color
+
+  div.activity_content
+    +column(15)
+    h1, h2, h3, h4
+      font-size: 1em
+  div.activity_info
+    +column(5, true)
+    text-align: right
+  div.control-bar
+    +column(20)
+    margin-bottom: 0

app/assets/stylesheets/partials/_articles.sass

@@ -32,17 +32,3 @@ article
   div.control-bar
     +column(20)
     margin-bottom: 0
-
-hr.separator
-  border: none
-  height: 1px
-  background-color: #ccc
-  color: #ccc
-  margin: 2em 0
-
-a#back-link
-  border-top: 1px solid #ccc
-  padding-top: 1em
-  margin-top: 1em
-  display: block
-  font-family: $display-font

app/assets/stylesheets/partials/_base.sass

@@ -35,3 +35,17 @@ a.warn
   margin: 1em 0
   a, input, button
     margin-right: 0.5em
+
+hr.separator
+  border: none
+  height: 1px
+  background-color: #ccc
+  color: #ccc
+  margin: 2em 0
+
+a#back-link
+  border-top: 1px solid #ccc
+  padding-top: 1em
+  margin-top: 1em
+  display: block
+  font-family: $display-font

app/controllers/activities_controller.rb

@@ -0,0 +1,33 @@
+class ActivitiesController < ApplicationController
+  before_filter :user_required
+  before_filter :find_activity, :only => [:show, :edit, :update, :destroy, :register]
+
+  def index
+    @activities = Activity.includes(:author).order("created_at desc").
+                  paginate(:page => params[:page])
+    @activities = ActivityDecorator.decorate(@activities)
+  end
+
+  def register
+    registration = @activity.activity_registrations.
+      where(:user_id => current_user.id)
+
+    if registration.any?
+      registration.first.destroy
+    else
+      registration.create
+    end
+
+    @activity = ActivityDecorator.decorate(@activity)
+
+    respond_to do |format|
+      format.js
+    end
+  end
+
+  private
+
+  def find_activity
+    @activity = Activity.find_by_slug(params[:id])
+  end
+end

app/decorators/activity_decorator.rb

@@ -0,0 +1,43 @@
+class ActivityDecorator < ApplicationDecorator
+  decorates :activity
+
+  def registration_button
+    h.content_tag(:span, :class => "registration") do
+      if activity.registration_open?
+        if activity.approved_participants.include?(h.current_user)
+          text = "Participating"
+          css_class = "participating"
+        elsif activity.users.include?(h.current_user)
+          text = "Pending Approval"
+        else
+          text = "Participate"
+        end
+
+        h.link_to(text, h.register_activity_path(activity),
+          :class => "clean-gray #{css_class if css_class}",
+          :method => :post, :remote => true)
+      else
+        "Registration Closed"
+      end
+    end
+  end
+
+  def created_at
+    h.l activity.created_at.to_date, :format => :long
+  end
+
+  def author_link
+    "by #{h.link_to(activity.author.name, h.person_path(activity.author))}".html_safe
+  end
+
+  def participants_link
+    participants = activity.approved_participants
+
+    if participants.any?
+      link = h.link_to h.pluralize(participants.count, 'participant'),
+        h.activity_path(activity, :anchor => "participants")
+    end
+
+    h.content_tag(:div, link || "", :class => "participants").html_safe
+  end
+end

app/decorators/application_decorator.rb

@@ -1,28 +1,12 @@
 class ApplicationDecorator < Draper::Base
-  # Lazy Helpers
-  #   PRO: Call Rails helpers without the h. proxy
-  #        ex: number_to_currency(model.price)
-  #   CON: Add a bazillion methods into your decorator's namespace
-  #        and probably sacrifice performance/memory
-  #  
-  #   Enable them by uncommenting this line:
-  #   lazy_helpers
 
-  # Shared Decorations
-  #   Consider defining shared methods common to all your models.
-  #   
-  #   Example: standardize the formatting of timestamps
-  #
-  #   def formatted_timestamp(time)
-  #     h.content_tag :span, time.strftime("%a %m/%d/%y"), 
-  #                   :class => 'timestamp' 
-  #   end
-  # 
-  #   def created_at
-  #     formatted_timestamp(model.created_at)
-  #   end
-  # 
-  #   def updated_at
-  #     formatted_timestamp(model.updated_at)
-  #   end
+  def bottom(collection, collection_path)
+    if collection
+      h.tag(:hr, :class => "separator") if model != collection.last
+    else
+      h.link_to "&laquo; There is more where that came from".html_safe,
+        collection_path, :id => "back-link"
+    end
+  end
+
 end

app/decorators/article_decorator.rb

@@ -10,15 +10,6 @@ def body
     h.md(article.body)
   end
 
-  def bottom(articles)
-    if articles
-      h.tag(:hr, :class => "separator") if article != articles.last
-    else
-      h.link_to "« There is more where that came from".html_safe,
-        h.articles_path, :id => "back-link"
-    end
-  end
-
   def twitter
     via = "via @" + article.author.twitter unless article.author.twitter.blank?
     url = short_url

app/models/activity.rb

@@ -0,0 +1,20 @@
+class Activity < ActiveRecord::Base
+
+  belongs_to :author, :class_name => "User"
+  has_many   :activity_registrations
+  has_many   :users, :through => :activity_registrations
+
+  has_slug 'title', :max_length  => 40,
+                    :on_conflict => :append_id
+
+  validates_presence_of :title, :body, :author
+
+  def to_param
+    slug
+  end
+
+  def approved_participants
+    users.includes(:activity_registrations).
+      where("activity_registrations.approved = true")
+  end
+end

app/models/activity_registration.rb

@@ -0,0 +1,16 @@
+class ActivityRegistration < ActiveRecord::Base
+  before_create :set_approval
+
+  belongs_to :user
+  belongs_to :activity
+
+  attr_protected :approved
+
+  private
+
+  def set_approval
+    self.approved = !activity.participation_moderated?
+
+    return true
+  end
+end

app/models/user.rb

@@ -1,7 +1,9 @@
 class User < ActiveRecord::Base
   before_save :clean_website
 
-  has_many :articles, :foreign_key => :author_id
+  has_many :articles,              :foreign_key => :author_id
+  has_many :activities,            :foreign_key => :author_id
+  has_many :activity_registrations
 
   GITHUB_FORMAT = {
     :with        => /^(?!-)[a-z\d-]+/i,

app/views/activities/_activity.html.haml

@@ -0,0 +1,25 @@
+= content_tag_for :div, activity do
+  .activity_title
+    - if @activities
+      = link_to activity.title, activity_path(activity)
+    - else
+      = activity.title
+
+    = activity.registration_button
+
+  .activity_content= activity.body
+
+  .activity_info
+    = activity.participants_link
+    = activity.author_link
+    %br
+    = activity.created_at
+
+  - if false #activity.editable_by?(current_user)
+    .control-bar
+      = link_to 'Edit', edit_activity_path(activity), :class => "clean-gray"
+      = link_to 'Destroy', activity, :confirm => 'Are you sure?',
+        :method => :delete, :class => "clean-gray warn"
+
+= activity.bottom(@activities, activities_path)
+

app/views/activities/index.html.haml

@@ -0,0 +1,3 @@
+#activities= render :partial => "activity", :collection => @activities
+
+= will_paginate @activities

app/views/activities/register.js.erb

@@ -0,0 +1,5 @@
+var button = '<%= escape_javascript @activity.registration_button %>';
+var participants = '<%= escape_javascript @activity.participants_link %>';
+
+$('#activity_<%= @activity.id %> span.registration').replaceWith(button);
+$('#activity_<%= @activity.id %> div.participants').replaceWith(participants);

app/views/articles/_article.html.haml

@@ -9,5 +9,4 @@
 
   = render 'user_info', :article => article, :profile_size => "100"
 
-= article.bottom(@articles)
-
+= article.bottom(@articles, articles_path)

app/views/shared/_navigation.html.haml

@@ -5,6 +5,7 @@
   = render :partial => "shared/flash", :locals => { :flash => flash }
   %span.nav
     = link_to "Updates", articles_path
+    = link_to("Activities", activities_path) if current_user
     = link_to "About", about_path
     %span#account
       - if current_user

config/routes.rb

@@ -8,6 +8,11 @@
 
   resources :people
   resources :articles
+  resources :activities do
+    member do
+      post :register
+    end
+  end
 
   namespace :admin do
     resources :pages

db/migrate/20120113160904_create_activities.rb

@@ -0,0 +1,15 @@
+class CreateActivities < ActiveRecord::Migration
+  def change
+    create_table :activities do |t|
+      t.integer :author_id
+      t.string  :title
+      t.string  :slug
+      t.text    :body
+
+      t.boolean :registration_open,       :null => false
+      t.boolean :participation_moderated, :null => false
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20120113162402_create_activity_registrations.rb

@@ -0,0 +1,12 @@
+class CreateActivityRegistrations < ActiveRecord::Migration
+  def change
+    create_table :activity_registrations do |t|
+      t.belongs_to :user
+      t.belongs_to :activity
+
+      t.boolean    :approved, :null => false
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -11,7 +11,26 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20120116220134) do
+ActiveRecord::Schema.define(:version => 20120113162402) do
+
+  create_table "activities", :force => true do |t|
+    t.integer  "author_id"
+    t.string   "title"
+    t.string   "slug"
+    t.text     "body"
+    t.boolean  "registration_open",       :null => false
+    t.boolean  "participation_moderated", :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  create_table "activity_registrations", :force => true do |t|
+    t.integer  "user_id"
+    t.integer  "activity_id"
+    t.boolean  "approved",    :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
 
   create_table "articles", :force => true do |t|
     t.integer  "author_id"