From 701405d00364c63c0efbf11a39368dd2cbee0053 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Thu, 12 Nov 2009 18:49:21 -0800
Subject: Add jQuery-compatible Rails example

This uses the new Upr::JSON class to generate output.
Apparently this is the same format used by Apache, nginx, and
lighttpd.  Hopefully this will help increase upr adoption.
---
 .../app/controllers/application_controller.rb      |  9 +++-
 .../app/controllers/files_controller.rb            | 35 +++++++++-----
 .../app/controllers/progress_controller.rb         | 10 ++++
 .../rails_app-2.3.4/app/views/files/new.html.erb   | 56 ++++++++++++++++++++++
 4 files changed, 98 insertions(+), 12 deletions(-)
 create mode 100644 examples/rails_app-2.3.4/app/controllers/progress_controller.rb
 create mode 100644 examples/rails_app-2.3.4/app/views/files/new.html.erb

(limited to 'examples/rails_app-2.3.4/app')

diff --git a/examples/rails_app-2.3.4/app/controllers/application_controller.rb b/examples/rails_app-2.3.4/app/controllers/application_controller.rb
index 11df5d1..eccce4e 100644
--- a/examples/rails_app-2.3.4/app/controllers/application_controller.rb
+++ b/examples/rails_app-2.3.4/app/controllers/application_controller.rb
@@ -1,3 +1,10 @@
 class ApplicationController < ActionController::Base
-  helper :all # include all helpers, all the time
+  # helper :all # include all helpers, all the time
+  defined?($upr) or before_filter do
+    # grab the backend in case we forget to set it (or if we're using DRb)
+    defined?($upr) or ObjectSpace.each_object(Upr::InputWrapper) do |x|
+      $upr ||= x.backend
+    end
+  end
+
 end
diff --git a/examples/rails_app-2.3.4/app/controllers/files_controller.rb b/examples/rails_app-2.3.4/app/controllers/files_controller.rb
index 6509a71..004c13e 100644
--- a/examples/rails_app-2.3.4/app/controllers/files_controller.rb
+++ b/examples/rails_app-2.3.4/app/controllers/files_controller.rb
@@ -1,21 +1,26 @@
 require 'digest/sha1'
 
 class FilesController < ApplicationController
-  defined?($upr) or before_filter do
-    # grab the backend in case we forget to set it (or if we're using DRb)
-    defined?($upr) or ObjectSpace.each_object(Upr::InputWrapper) do |x|
-      $upr ||= x.backend
+  # used by streaming upload progress
+  def new
+    if request.post?
+      size, hexdigest = _read_sha1_size
+      msg = "Successfully upload file (size: #{size}, sha1: #{hexdigest})"
+      flash[:notice] = msg
+      redirect_to "/files/new"
     end
   end
 
   def index
   end
 
+  # used by mup-compatible upload progress
   def status
     tmp = $upr.read(params[:upload_id]).inspect
     render :text => "#{Rack::Utils.escape_html(tmp)}\n"
   end
 
+  # used by mup-compatible upload progress
   def progress
     render :update do |page|
       status = $upr.read(params[:upload_id]) and
@@ -23,19 +28,27 @@ class FilesController < ApplicationController
     end
   end
 
+  # used by mup-compatible upload progress
   def upload
-    file = params[:data]
+    size, hexdigest = _read_sha1_size
+    render :text => "sha1: #{hexdigest}<br />" \
+                    "size: #{size}<br />" \
+                    '<script type="text/javascript">' \
+                    'window.parent.UploadProgress.finish();</script>'
+  end
+
+private
+
+  def _read_sha1_size
+    file = params[:data] or return [ -1, :unknown ]
+    File.unlink(file.path) if file.respond_to?(:path)
     digest = Digest::SHA1.new
     if buf = file.read(16384)
       begin
         digest.update(buf)
       end while file.read(16384, buf)
     end
-    size = file.stat.size
-    File.unlink(file.path)
-    render :text => "sha1: #{digest.hexdigest}<br />" \
-                    "size: #{size}<br />" \
-                    '<script type="text/javascript">' \
-                    'window.parent.UploadProgress.finish();</script>'
+    [ file.size, digest.hexdigest ]
   end
+
 end
diff --git a/examples/rails_app-2.3.4/app/controllers/progress_controller.rb b/examples/rails_app-2.3.4/app/controllers/progress_controller.rb
new file mode 100644
index 0000000..b3d91f3
--- /dev/null
+++ b/examples/rails_app-2.3.4/app/controllers/progress_controller.rb
@@ -0,0 +1,10 @@
+class ProgressController < ApplicationController
+  def index
+    opt = {
+      :backend => $upr,
+      :frequency => 0.5,
+      :env => request.env,
+    }
+    render(Upr::JSON.new(opt).rails_render_options)
+  end
+end
diff --git a/examples/rails_app-2.3.4/app/views/files/new.html.erb b/examples/rails_app-2.3.4/app/views/files/new.html.erb
new file mode 100644
index 0000000..42f5f27
--- /dev/null
+++ b/examples/rails_app-2.3.4/app/views/files/new.html.erb
@@ -0,0 +1,56 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<!-- example taken from git://github.com/drogus/jquery-upload-progress -->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+	<head>
+		<title>ajaxFileUpload</title>
+	    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+		<script src="/javascripts/jquery.js"></script>
+		<script src="/javascripts/jquery.uploadProgress.js"></script>
+		<script type="text/javascript">
+			$(function() {
+				$('form').uploadProgress({
+					/* scripts locations for safari */
+					jqueryPath: "/javascripts/jquery.js",
+					uploadProgressPath: "/javascripts/jquery.uploadProgress.js",
+					start:function(){},
+					uploading: function(upload) {$('#percents').html(upload.percents+'%');},
+					interval: 500
+			    });
+			});
+		</script>
+		<style type="text/css">
+			.bar {
+			  width: 300px;
+			}
+
+			#progress {
+			  background: #eee;
+			  border: 1px solid #222;
+			  margin-top: 20px;
+			}
+			#progressbar {
+			  width: 0px;
+			  height: 24px;
+			  background: #333;
+			}
+		</style>
+	</head>
+
+	<body>
+    <% if flash[:notice] %>
+    <h1><%= flash[:notice] %></h1>
+    <% end %>
+	  <form id="upload" enctype="multipart/form-data" action="/files/new" method="post">
+        <input name="data" type="file"/>
+        <input type="submit" value="Upload"/>
+      </form>
+
+	    <div id="uploading">
+	      <div id="progress" class="bar">
+	        <div id="progressbar">&nbsp;</div>
+	      </div>
+	    </div>
+		<div id="percents"></div>
+	</body>
+</html>
-- 
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