Add user microposts

app/assets/stylesheets/custom.css.scss

@@ -183,4 +183,32 @@ input, textarea, select, .uneditable-input {
       border-bottom: 1px solid $grayLighter
     }
   }
-}
+}
+
+/* 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/controllers/microposts_controller.rb

@@ -0,0 +1,27 @@
+class MicropostsController < ApplicationController
+  before_filter :signed_in_user
+  before_filter :correct_user,   only: :destroy
+
+  def create
+    @micropost = current_user.microposts.build(params[:micropost])
+    if @micropost.save
+      flash[:success] = "Micropost created!"
+      redirect_to root_path
+    else
+      @feed_items = []
+      render 'static_pages/home'
+    end
+  end
+
+  def destroy
+    @micropost.destroy
+    redirect_back_or 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

@@ -1,7 +1,12 @@
 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
   end
 

app/controllers/users_controller.rb

@@ -9,6 +9,7 @@ def index
 
   def show
     @user = User.find(params[:id])
+    @microposts = @user.microposts.paginate(page: params[:page])
   end
 
   def new
@@ -47,13 +48,6 @@ def destroy
 
   private
 
-    def signed_in_user
-      unless signed_in?
-        store_location
-        redirect_to signin_path, notice: "Please sign in."
-      end
-    end
-
     def correct_user
       @user = User.find(params[:id])
       redirect_to(root_path) unless current_user?(@user)

app/helpers/sessions_helper.rb

@@ -21,6 +21,13 @@ def current_user?(user)
     user == current_user
   end
 
+  def signed_in_user
+    unless signed_in?
+      store_location
+      redirect_to signin_path, notice: "Please sign in."
+    end
+  end
+
   def sign_out
     cookies.delete(:remember_token)
   end

app/models/micropost.rb

@@ -0,0 +1,9 @@
+class Micropost < ActiveRecord::Base
+  attr_accessible :content
+  belongs_to :user
+
+  validates :content, presence: true, length: { maximum: 140 }
+  validates :user_id, presence: true
+
+  default_scope order: 'microposts.created_at DESC'
+end

app/models/user.rb

@@ -1,6 +1,8 @@
 class User < ActiveRecord::Base
   attr_accessible :name, :email, :password, :password_confirmation
   has_secure_password
+  has_many :microposts, dependent: :destroy
+
   before_save :create_remember_token
 
   validates :name,  presence: true, length: { maximum: 50 }
@@ -10,6 +12,11 @@ class User < ActiveRecord::Base
   validates :password, length: { minimum: 6 }
   validates :password_confirmation, presence: true
 
+
+  def feed
+    Micropost.where("user_id = ?", id)
+  end
+
   private
 
     def create_remember_token

app/views/microposts/_micropost.html.erb

@@ -0,0 +1,11 @@
+<li>
+  <span class="content"><%= micropost.content %></span>
+  <span class="timestamp">
+    Posted <%= time_ago_in_words(micropost.created_at) %> ago.
+  </span>
+  <% if current_user?(micropost.user) %>
+    <%= link_to "delete", micropost, method:  :delete,
+                                     confirm: "You sure?",
+                                     title:   micropost.content %>
+  <% end %>
+</li>

app/views/shared/_error_messages.html.erb

@@ -1,12 +1,12 @@
-<% if @user.errors.any? %>
+<% if object.errors.any? %>
   <div id="error_explanation">
     <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>
   </div>
-<% end %>
+<% end %>

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 +1,15 @@
+<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) %> ago.
+  </span>
+  <% if current_user?(feed_item.user) %>
+    <%= link_to "delete", feed_item, method:  :delete,
+                                     confirm: "You sure?",
+                                     title:   feed_item.content %>
+  <% 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, placeholder: "Compose new micropost..." %>
+  </div>
+  <%= f.submit "Post", class: "btn btn-large btn-primary" %>
+<% end %>

app/views/shared/_user_info.html.erb

@@ -0,0 +1,12 @@
+<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

@@ -1,13 +1,31 @@
-<div class="center hero-unit">
-  <h1>Welcome to the Sample App</h1>
+<% if signed_in? %>
+  <div class="row">
+    <aside class="span4">
+      <section>
+        <%= render 'shared/user_info' %>
+      </section>
+      <section>
+        <%= render 'shared/micropost_form' %>
+      </section>
+    </aside>
+    <div class="span8">
+      <h3>Micropost Feed</h3>
+      <%= render 'shared/feed' %>
+    </div>
+  </div>
+<% else %>
+  <div class="center hero-unit">
+    <h1>Welcome to the Sample App</h1>
 
-  <h2>
-    This is the home page for the
-    <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
-    sample application.
-  </h2>
+    <h2>
+      This is the home page for the
+      <a href="http://railstutorial.org/">Ruby on Rails Tutorial</a>
+      sample application.
+    </h2>
 
-  <%= link_to "Sign up now!", '#', class: "btn btn-large btn-primary" %>
-</div>
+    <%= 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/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 +8,13 @@
       </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

@@ -1,7 +1,8 @@
 SampleApp::Application.routes.draw do
   resources :users
   resources :sessions, only: [:new, :create, :destroy]
-
+  resources :microposts, only: [:create, :destroy]
+
   root to: 'static_pages#home'
 
   match '/signup',  to: 'users#new'

db/migrate/20120308210452_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 => 20120308193644) do
+ActiveRecord::Schema.define(:version => 20120308210452) 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

@@ -16,5 +16,11 @@ namespace :db do
                    password: password,
                    password_confirmation: password)
     end
+
+    users = User.all(limit: 6)
+    50.times do
+      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

spec/models/micropost_spec.rb

@@ -0,0 +1,36 @@
+require 'spec_helper'
+
+describe Micropost do
+
+  let(:user) { FactoryGirl.create(:user) }
+  before { @micropost = user.microposts.build(content: "Lorem ipsum") }
+
+  subject { @micropost }
+
+  it { should respond_to(:content) }
+  it { should respond_to(:user_id) }
+  it { should respond_to(:user) }
+  its(:user) { should == user }
+
+  it { should be_valid }
+
+  describe "when user_id is not present" do
+    before { @micropost.user_id = nil }
+    it { should_not be_valid }
+  end
+
+  describe "when user_id is not present" do
+    before { @micropost.user_id = nil }
+    it { should_not be_valid }
+  end
+
+  describe "with blank content" do
+    before { @micropost.content = " " }
+    it { should_not be_valid }
+  end
+
+  describe "with content that is too long" do
+    before { @micropost.content = "a" * 141 }
+    it { should_not be_valid }
+  end
+end