export a json version of user page, include karma and about text

app/controllers/users_controller.rb

@@ -2,6 +2,11 @@ class UsersController < ApplicationController
   def show
     @showing_user = User.where(:username => params[:username]).first!
     @title = "User #{@showing_user.username}"
+
+    respond_to do |format|
+      format.html { render :action => "show" }
+      format.json { render :json => @showing_user }
+    end
   end
 
   def tree

app/models/user.rb

@@ -78,6 +78,8 @@ class User < ActiveRecord::Base
       :created_at,
       :is_admin,
       :is_moderator,
+      :karma,
+      :about,
     ])
     h[:avatar_url] = avatar_url
     h

config/routes.rb

@@ -87,7 +87,7 @@ Lobsters::Application.routes.draw do
     get "/c/:id" => "comments#redirect_from_short_id"
 
     get "/u" => "users#tree"
-    get "/u/:username" => "users#show", :as => "user"
+    get "/u/:username" => "users#show", :as => "user", :format => /html|json/
 
     get "/settings" => "settings#index"
     post "/settings" => "settings#update"