Add option to export all user updates.

Implements issue 653

app/controllers/updates_controller.rb

@@ -1,6 +1,6 @@
 class UpdatesController < ApplicationController
   before_filter :process_params
-  before_filter :require_user, :only => [:timeline, :replies]
+  before_filter :require_user, :only => [:timeline, :replies, :export]
 
   def index
     @title = "updates"
@@ -27,6 +27,14 @@ def replies
     render_index(current_user.at_replies(params))
   end
 
+  def export
+    updates = Update.where :author_id => current_user.author.id
+    json_updates = updates.to_json(:only => [:created_at, :text])
+    send_data(json_updates,
+              :filename => "#{current_user.username}-updates.json",
+              :type => "application/json")
+  end
+
   def show
     @update = Update.first(:id => params[:id])
     if @update

app/views/users/show.haml

@@ -31,6 +31,8 @@
             - if @author.user == current_user
               .edit
                 %a{:href => edit_user_path(@author.username)} Edit
+              .export
+                %a= link_to "Export all updates", export_path
 
           - unless @author.website.blank? or @author.bio.blank?
             .info

config/routes.rb

@@ -49,6 +49,7 @@
   resources :updates, :only => [:index, :show, :create, :destroy]
   match "/timeline", :to => "updates#timeline"
   match "/replies", :to => "updates#replies"
+  match "/export", :to => "updates#export", :via => :get
 
   # Search
   resource :search, :only => :show

test/acceptance/export_updates_test.rb

@@ -0,0 +1,34 @@
+require 'require_relative' if RUBY_VERSION[0,3] == '1.8'
+require_relative 'acceptance_helper'
+
+describe "export updates" do
+  include AcceptanceHelper
+
+  describe "logged in" do
+    before do
+      log_in_as_some_user
+      update = Fabricate(:update, :author => @u.author)
+    end
+
+    it "has a link to export all updates" do
+      visit "/users/#{@u.username}"
+      assert has_link? "Export all updates"
+    end
+
+    it "exports all updates in json format" do
+      visit "/users/#{@u.username}"
+      click_link "Export all updates"
+      assert_equal "application/json", page.response_headers['Content-Type']
+      assert_match /#{@u.username}-updates.json/, page.response_headers['Content-Disposition']
+    end
+
+  end
+
+  describe "unauthorized" do
+    before { visit "/export" }
+    it "should redirect to root page" do
+      assert page.has_selector? 'div#signup'
+    end
+  end
+
+end