Change examples in guide to reflect changes from XML -> JSON

railties/guides/source/action_mailer_basics.textile

@@ -120,7 +120,7 @@ Now that we have a user model to play with, we will just edit the +app/controlle
 <ruby>
 class UsersController < ApplicationController
   # POST /users
-  # POST /users.xml
+  # POST /users.json
   def create
     @user = User.new(params[:user])
 
@@ -130,10 +130,10 @@ class UsersController < ApplicationController
         UserMailer.welcome_email(@user).deliver
 
         format.html { redirect_to(@user, :notice => 'User was successfully created.') }
-        format.xml  { render :xml => @user, :status => :created, :location => @user }
+        format.json { render :json => @user, :status => :created, :location => @user }
       else
         format.html { render :action => "new" }
-        format.xml  { render :xml => @user.errors, :status => :unprocessable_entity }
+        format.json { render :json => @user.errors, :status => :unprocessable_entity }
       end
     end
   end

railties/guides/source/debugging_rails_applications.textile

@@ -279,14 +279,14 @@ This command shows you where you are in the code by printing 10 lines centered a
 [1, 10] in /PathToProject/posts_controller.rb
    1  class PostsController < ApplicationController
    2    # GET /posts
-   3    # GET /posts.xml
+   3    # GET /posts.json
    4    def index
    5      debugger
 => 6      @posts = Post.all
    7
    8      respond_to do |format|
    9        format.html # index.html.erb
-   10        format.xml  { render :xml => @posts }
+   10        format.json { render :json => @posts }
 </shell>
 
 If you repeat the +list+ command, this time using just +l+, the next ten lines of the file will be printed out.
@@ -298,7 +298,7 @@ If you repeat the +list+ command, this time using just +l+, the next ten lines o
    12    end
    13
    14    # GET /posts/1
-   15    # GET /posts/1.xml
+   15    # GET /posts/1.json
    16    def show
    17      @post = Post.find(params[:id])
    18
@@ -315,14 +315,14 @@ On the other hand, to see the previous ten lines you should type +list-+ (or +l-
 [1, 10] in /PathToProject/posts_controller.rb
    1  class PostsController < ApplicationController
    2    # GET /posts
-   3    # GET /posts.xml
+   3    # GET /posts.json
    4    def index
    5      debugger
    6      @posts = Post.all
    7
    8      respond_to do |format|
    9        format.html # index.html.erb
-   10        format.xml  { render :xml => @posts }
+   10        format.json { render :json => @posts }
 </shell>
 
 This way you can move inside the file, being able to see the code above and over the line you added the +debugger+.
@@ -333,14 +333,14 @@ Finally, to see where you are in the code again you can type +list=+
 [1, 10] in /PathToProject/posts_controller.rb
    1  class PostsController < ApplicationController
    2    # GET /posts
-   3    # GET /posts.xml
+   3    # GET /posts.json
    4    def index
    5      debugger
 => 6      @posts = Post.all
    7
    8      respond_to do |format|
    9        format.html # index.html.erb
-   10        format.xml  { render :xml => @posts }
+   10        format.json { render :json => @posts }
 </shell>
 
 h4. The Context