From 2e2afc0ac64190261df4b05428afddea96c8628c Mon Sep 17 00:00:00 2001
From: Oscar Del Ben <info@oscardelben.com>
Date: Fri, 20 Apr 2012 12:06:47 +0200
Subject: Add show action in getting started guide

---
 .../getting_started/show_action_for_posts.png      | Bin 0 -> 6885 bytes
 .../app/controllers/posts_controller.rb            |   7 ++-
 guides/code/getting_started/app/models/post.rb     |   3 --
 .../getting_started/app/views/posts/show.html.erb  |  25 ++--------
 guides/code/getting_started/config/routes.rb       |   1 +
 guides/source/getting_started.textile              |  54 ++++++++++++++++++++-
 6 files changed, 63 insertions(+), 27 deletions(-)
 create mode 100644 guides/assets/images/getting_started/show_action_for_posts.png

(limited to 'guides')

diff --git a/guides/assets/images/getting_started/show_action_for_posts.png b/guides/assets/images/getting_started/show_action_for_posts.png
new file mode 100644
index 0000000000..5c8c4d8e5e
Binary files /dev/null and b/guides/assets/images/getting_started/show_action_for_posts.png differ
diff --git a/guides/code/getting_started/app/controllers/posts_controller.rb b/guides/code/getting_started/app/controllers/posts_controller.rb
index 3373443b16..f9181f98c6 100644
--- a/guides/code/getting_started/app/controllers/posts_controller.rb
+++ b/guides/code/getting_started/app/controllers/posts_controller.rb
@@ -1,5 +1,10 @@
 class PostsController < ApplicationController
 
+
+  def show
+    @post = Post.find(params[:id])
+  end
+
   def new
   end
 
@@ -7,6 +12,6 @@ class PostsController < ApplicationController
     @post = Post.new(params[:post])
 
     @post.save
-    redirect_to :action => :index
+    redirect_to :action => :show, :id => @post.id
   end
 end
diff --git a/guides/code/getting_started/app/models/post.rb b/guides/code/getting_started/app/models/post.rb
index e77e607f3f..21387340b0 100644
--- a/guides/code/getting_started/app/models/post.rb
+++ b/guides/code/getting_started/app/models/post.rb
@@ -3,7 +3,4 @@ class Post < ActiveRecord::Base
                     :length => { :minimum => 5 }
 
   has_many :comments, :dependent => :destroy
-
-  accepts_nested_attributes_for :tags, :allow_destroy => :true,
-    :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
 end
diff --git a/guides/code/getting_started/app/views/posts/show.html.erb b/guides/code/getting_started/app/views/posts/show.html.erb
index 3445fd8779..6207babdf0 100644
--- a/guides/code/getting_started/app/views/posts/show.html.erb
+++ b/guides/code/getting_started/app/views/posts/show.html.erb
@@ -1,26 +1,9 @@
-<p class="notice"><%= notice %></p>
- 
 <p>
-  <b>Name:</b>
-  <%= @post.name %>
-</p>
- 
-<p>
-  <b>Title:</b>
+  <strong>Title:</strong>
   <%= @post.title %>
 </p>
- 
+
 <p>
-  <b>Content:</b>
-  <%= @post.content %>
+  <strong>Text:</strong>
+  <%= @post.text %>
 </p>
-
-<h2>Comments</h2>
-<%= render @post.comments %>
- 
-<h2>Add a comment:</h2>
-<%= render "comments/form" %>
- 
- 
-<%= link_to 'Edit Post', edit_post_path(@post) %> |
-<%= link_to 'Back to Posts', posts_path %> |
diff --git a/guides/code/getting_started/config/routes.rb b/guides/code/getting_started/config/routes.rb
index 98b1a6dcc8..7210b559bb 100644
--- a/guides/code/getting_started/config/routes.rb
+++ b/guides/code/getting_started/config/routes.rb
@@ -5,6 +5,7 @@ Blog::Application.routes.draw do
 
   get "posts/new"
   post "posts/create"
+  get "posts/:id" => "posts#show"
 
   # The priority is based upon order of creation:
   # first created -> highest priority.
diff --git a/guides/source/getting_started.textile b/guides/source/getting_started.textile
index 6de9cc39bc..b86f785e3d 100644
--- a/guides/source/getting_started.textile
+++ b/guides/source/getting_started.textile
@@ -474,7 +474,7 @@ def create
   @post = Post.new(params[:post])
 
   @post.save
-  redirect_to :action => :index
+  redirect_to :action => :show, :id => @post.id
 end
 </ruby>
 
@@ -483,13 +483,63 @@ respective attributes, which are automatically mapped to its
 database columns. In the first line we do just that (remember that
 +params[:post]+ contains the attributes we're interested in). Then,
 +@post.save+ is responsible for saving the model in the database.
-Finally, on the last line we redirect the user to the +index+ action,
+Finally, on the last line we redirect the user to the +show+ action,
 wich we have not defined yet.
 
 TIP: As we'll see later, +@post.save+ returns a boolean indicating
 wherever the model was saved or not, and you can (and usually do) take
 different actions depending on the result of calling +@post.save+.
 
+h4. Showing posts
+
+Before trying to create a new post, let's add the +show+ action, which
+will be responsible for showing our posts. Open +config/routes.rb+
+and add the following route:
+
+<ruby>
+get "posts/:id" => "posts#show"
+</ruby>
+
+The special syntax +:id+ tells rails that this route expects an +:id+
+parameter, which in our case will be the id of the post. Note that this
+time we had to specify the actual mapping, +posts#show+ because
+otherwise Rails would not know which action to render.
+
+As we did before, we need to add the +show+ action in the
++posts_controller+ and its respective view.
+
+<ruby>
+def show
+  @post = Post.find(params[:id])
+end
+</ruby>
+
+A couple of things to note. We use +Post.find+ to find the post we're
+interested in. We also use an instance variable (prefixed by +@+) to
+hold our reference to the post object. We do this because Rails will pass all instance
+variables to the view.
+
+Now, create a new file +app/view/posts/show.html.erb+ with the following
+content:
+
+<erb>
+<p>
+  <strong>Title:</strong>
+  <%= @post.title %>
+</p>
+
+<p>
+  <strong>Text:</strong>
+  <%= @post.text %>
+</p>
+</erb>
+
+Finally, if you now go to
+"http://localhost:3000/posts/new":http://localhost:3000/posts/new you'll
+be able to create a post. Try it!
+
+!images/getting_started/show_action_for_posts.png(Show action for posts)!
+
 h4. Adding a Link
 
 To hook the posts up to the home page you've already created, you can add a link
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