Add user microposts

app/assets/javascripts/microposts.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://jashkenas.github.com/coffee-script/

app/assets/stylesheets/custom.css.scss

@@ -183,3 +183,31 @@ input, textarea, select, .uneditable-input {
     }
   }
 }
+
+/* microposts */
+
+.microposts {
+  list-style: none;
+  margin: 10px 0 0 0;
+
+  li {
+    padding: 10px 0;
+    border-top: 1px solid #e8e8e8;
+  }
+}
+.content {
+  display: block;
+}
+.timestamp {
+  color: $grayLight;
+}
+.gravatar {
+  float: left;
+  margin-right: 10px;
+}
+aside {
+  textarea {
+    height: 100px;
+    margin-bottom: 5px;
+  }
+}

app/assets/stylesheets/microposts.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the microposts controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/microposts_controller.rb

@@ -0,0 +1,29 @@
+class MicropostsController < ApplicationController
+  before_filter :signed_in_user, :only => [:create, :destroy]
+  before_filter :correct_user, :only => :destroy
+
+  def index
+  end
+
+  def create
+    @micropost = current_user.microposts.build(params[:micropost])
+    if @micropost.save
+      flash[:success] = "Micropost created!"
+      redirect_to root_path
+    else
+      @feed_items = current_user.feed.paginate(:page => params[:page])
+      render 'static_pages/home'
+    end
+  end
+
+  def destroy
+    @micropost.destroy
+    redirect_to root_path
+  end
+
+  private
+    def correct_user
+      @micropost = current_user.microposts.find_by_id(params[:id])
+      redirect_to root_path if @micropost.nil?
+    end
+end

app/controllers/static_pages_controller.rb

@@ -1,5 +1,9 @@
 class StaticPagesController < ApplicationController
   def home
+    if signed_in?
+      @micropost = current_user.microposts.build
+      @feed_items = current_user.feed.paginate(:page => params[:page])
+    end
   end
 
   def help

app/controllers/users_controller.rb

@@ -13,6 +13,7 @@ def new
 
   def show
     @user = User.find(params[:id])
+    @microposts = @user.microposts.paginate(:page => params[:page])
   end
 
   def create
@@ -46,13 +47,6 @@ def destroy
   end
 
   private 
-    def signed_in_user
-      unless signed_in?
-        store_location
-        redirect_to signin_path, :notice => "Pleas sign in."
-      end
-    end
-
     def correct_user
       @user = User.find(params[:id])
       redirect_to root_path unless current_user?(@user)

app/helpers/microposts_helper.rb

@@ -0,0 +1,2 @@
+module MicropostsHelper
+end

app/helpers/sessions_helper.rb

@@ -33,4 +33,11 @@ def redirect_back_or(default)
   def store_location
     session[:return_to] = request.url
   end
+
+  def signed_in_user
+    unless signed_in?
+      store_location
+      redirect_to signin_path, :notice => "Pleas sign in."
+    end
+  end
 end

app/helpers/users_helper.rb

@@ -1,7 +1,8 @@
 module UsersHelper
-  def gravatar_for(user)
+  def gravatar_for(user, options = { :size => 50 })
    gravatar_id = Digest::MD5::hexdigest(user.email.downcase)
-    gravatar_url = "https://secure.gravatar.com/avatar/#{gravatar_id}"
-    image_tag(gravatar_url, :alt => user.name, :class => "gravatar") 
+   size = options[:size]
+   gravatar_url = "https://secure.gravatar.com/avatar/#{gravatar_id}?s=#{size}"
+   image_tag(gravatar_url, :alt => user.name, :class => "gravatar") 
   end
 end

app/models/micropost.rb

@@ -0,0 +1,23 @@
+# == Schema Information
+#
+# Table name: microposts
+#
+#  id         :integer          not null, primary key
+#  content    :string(255)
+#  user_id    :integer
+#  created_at :datetime         not null
+#  updated_at :datetime         not null
+#
+
+class Micropost < ActiveRecord::Base
+  attr_accessible :content
+  belongs_to :user
+
+  validates :user_id,
+      :presence => true
+  validates :content,
+      :presence => true,
+      :length => { :maximum => 140 }
+
+  default_scope :order => 'created_at DESC'
+end

app/models/user.rb

@@ -9,12 +9,15 @@
 #  updated_at      :datetime         not null
 #  password_digest :string(255)
 #  remember_token  :string(255)
+#  admin           :boolean          default(FALSE)
 #
 
 class User < ActiveRecord::Base
   attr_accessible :email, :name, :password, :password_confirmation
   has_secure_password
 
+  has_many :microposts, :dependent => :destroy
+
   validates :name, 
       :presence => true,
       :length => { :maximum => 50 }
@@ -35,6 +38,10 @@ class User < ActiveRecord::Base
   before_save { |user| user.email = email.downcase }
   before_save :create_remember_token
 
+  def feed
+    microposts
+  end
+
   private 
     def create_remember_token
       self.remember_token = SecureRandom.urlsafe_base64

app/views/microposts/_micropost.html.erb

@@ -0,0 +1,12 @@
+<li>
+  <span class="content"><%= micropost.content %></span>
+  <span class="timestamp">
+    Posted <%= time_ago_in_words(micropost.created_at) %>
+  </span>
+  <% if current_user?(micropost.user) %>
+    <%= link_to 'delete', micropost, :method => :delete,
+      :data => { :confirm => 'You sure?' },
+      :title => micropost.content
+    %>
+  <% end %>
+</li>

app/views/microposts/create.html.erb

@@ -0,0 +1,2 @@
+<h1>Microposts#create</h1>
+<p>Find me in app/views/microposts/create.html.erb</p>

app/views/microposts/destroy.html.erb

@@ -0,0 +1,2 @@
+<h1>Microposts#destroy</h1>
+<p>Find me in app/views/microposts/destroy.html.erb</p>

app/views/shared/_error_messages.html.erb

@@ -1,10 +1,10 @@
 <div id="error_explanation">
-  <% if @user.errors.any? %>
+  <% if object.errors.any? %>
     <div class="alert alert-error">
-      The form contains <%= pluralize(@user.errors.count, 'error') %>.
+      The form contains <%= pluralize(object.errors.count, 'error') %>.
     </div>
     <ul>
-      <% @user.errors.full_messages.each do |msg| %>
+      <% object.errors.full_messages.each do |msg| %>
         <li>* <%= msg %></li>
       <% end %>
     </ul>

app/views/shared/_feed.html.erb

@@ -0,0 +1,6 @@
+<% if @feed_items.any? %>
+  <ol class="microposts">
+    <%= render :partial => 'shared/feed_item', :collection => @feed_items %>
+  </ol>
+  <%= will_paginate @feed_items %>
+<% end %>

app/views/shared/_feed_item.html.erb

@@ -0,0 +1,13 @@
+<li id="<%= feed_item.id %>">
+  <%= link_to gravatar_for(feed_item.user), feed_item.user %>
+  <span class="user">
+    <%= link_to feed_item.user.name, feed_item.user %>
+  </span>
+  <span class="content"><%= feed_item.content %></span>
+  <span class="timestamp">
+    Posted <%= time_ago_in_words(feed_item.created_at) %>
+  </span>
+  <% if current_user?(feed_item.user) %>
+    <%= link_to 'delete', feed_item, :method => :delete, :data => { :confirm => "You sure?" } %>
+  <% end %>
+</li>

app/views/shared/_micropost_form.html.erb

@@ -0,0 +1,7 @@
+<%= form_for(@micropost) do |f| %>
+  <%= render 'shared/error_messages', :object => f.object %>
+  <div class="field">
+    <%= f.text_area :content, :rows => 5, :placeholder => "Compose new micropost..." %>
+  </div>
+  <%= f.submit 'Post', :class => 'btn btn-large btn-primary' %>
+<% end %>

app/views/shared/_user_info.html.erb

@@ -0,0 +1,10 @@
+<a href="<%= user_path(current_user) %>">
+  <%= gravatar_for current_user, :size => 52 %>
+</a>
+<h1><%= current_user.name %></h1>
+<span>
+  <%= link_to 'view my profile', current_user %>
+</span>
+<span>
+  <%= pluralize(current_user.microposts.count, 'micropost') %>
+</span>

app/views/static_pages/home.html.erb

@@ -1,11 +1,28 @@
-<div class="center hero-unit">
-  <h1>Sample App</h1>
-  <p>
-    This is the home page for the
-    <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
-    sample application.
-  </p>
-  <%= link_to 'Sign up now!', signup_path, :class => 'btn btn-large btn-primary' %>
-</div>
+<% if signed_in? %>
+  <div class="row">
+    <div class="span4">
+      <section>
+        <%= render :partial => 'shared/user_info' %>
+      </section>
+      <section>
+        <%= render :partial => 'shared/micropost_form' %>
+      </section>
+    </div>
+    <div class="span8">
+      <h3>Micropost Feed</h3>
+      <%= render 'shared/feed' %>
+    </div>
+  </div>
+<% else %>
+  <div class="center hero-unit">
+    <h1>Sample App</h1>
+    <p>
+      This is the home page for the
+      <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
+      sample application.
+    </p>
+    <%= link_to 'Sign up now!', signup_path, :class => 'btn btn-large btn-primary' %>
+  </div>
 
-<%= link_to image_tag('rails.png', :alt => 'Rails'), 'http://rubyonrails.org' %>
+  <%= link_to image_tag('rails.png', :alt => 'Rails'), 'http://rubyonrails.org' %>
+<% end %>

app/views/users/edit.html.erb

@@ -4,7 +4,7 @@
 <div class="row">
   <div class="span6 offset3">
     <%= form_for(@user) do |f| %>
-      <%= render 'shared/error_messages' %>
+      <%= render 'shared/error_messages', :object => f.object %>
 
       <%= f.label :name %>
       <%= f.text_field :name %>

app/views/users/new.html.erb

@@ -4,7 +4,7 @@
 <div class="row">
   <div class="span6 offset3">
     <%= form_for @user do |f| %>
-      <%= render 'shared/error_messages' %>
+      <%= render 'shared/error_messages', :object => f.object %>
 
       <%= f.label :name %>
       <%= f.text_field :name %>

app/views/users/show.html.erb

@@ -8,4 +8,14 @@
       </h1>
     </section>
   </aside>
+
+  <div class="span8">
+    <% if @user.microposts.any? %>
+      <h3>Microposts (<%= @user.microposts.count %>)</h3>
+      <ol class="microposts">
+        <%= render @microposts %>
+      </ol>
+      <%= will_paginate @microposts %>
+    <% end %>
+  </div>
 </div>

config/routes.rb

@@ -1,6 +1,7 @@
 SampleApp::Application.routes.draw do
   resources :users
   resources :sessions, :only => [:new, :create, :destroy]
+  resources :microposts, :only => [:create, :destroy]
 
   match '/signin' => 'sessions#new'
   match '/signout' => 'sessions#destroy'

db/migrate/20121016074701_create_microposts.rb

@@ -0,0 +1,11 @@
+class CreateMicroposts < ActiveRecord::Migration
+  def change
+    create_table :microposts do |t|
+      t.string :content
+      t.integer :user_id
+
+      t.timestamps
+    end
+    add_index :microposts, [:user_id, :created_at]
+  end
+end

db/schema.rb

@@ -11,7 +11,16 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20121016070552) do
+ActiveRecord::Schema.define(:version => 20121016074701) do
+
+  create_table "microposts", :force => true do |t|
+    t.string   "content"
+    t.integer  "user_id"
+    t.datetime "created_at", :null => false
+    t.datetime "updated_at", :null => false
+  end
+
+  add_index "microposts", ["user_id", "created_at"], :name => "index_microposts_on_user_id_and_created_at"
 
   create_table "users", :force => true do |t|
     t.string   "name"

lib/tasks/sample_data.rake

@@ -19,5 +19,11 @@ namespace :db do
                    :password => password,
                    :password_confirmation => password)
     end
+
+    users = User.all(:limit => 6)
+    50.times do |n|
+      content = Faker::Lorem.sentence(5)
+      users.each { |user| user.microposts.create!(:content => content) }
+    end
   end
 end

spec/factories.rb

@@ -9,4 +9,9 @@
       admin true
     end
   end
+
+  factory :micropost do
+    content "Lorem ipsum"
+    user
+  end
 end