Module: AppliciousUtils::ViewHelpers

Defined in:
lib/applicious_utils/view_helpers.rb

Instance Method Summary collapse

Instance Method Details

#applicious_uploader(options) ⇒ Object

 Derived from github.com/iwasrobbed/Rails3-S3-Uploader-Plupload



7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/applicious_utils/view_helpers.rb', line 7

def applicious_uploader(options)
  options[:s3_config_filename] ||= Rails.root.join('config', 'amazon_s3.yml')
  config = YAML.load_file(options[:s3_config_filename])[Rails.env].symbolize_keys
  bucket            = config[:bucket_name]
  access_key_id     = config[:access_key_id]
  secret_access_key = config[:secret_access_key]

  options[:key] ||= 'uploads'  # folder on AWS to store file in
  options[:acl] ||= 'public-read'
  options[:expiration_date] ||= 10.hours.from_now.utc.iso8601
  options[:max_filesize] ||= 500.megabytes
  #options[:button_id]
			
			filename_token = SecureRandom.uuid + '_' + Time.now.to_i.to_s
			
  id = options[:id] ? "_#{options[:id]}" : ''

  policy = Base64.encode64(
    "{'expiration': '#{options[:expiration_date]}',
      'conditions': [
        {'bucket': '#{bucket}'},
        {'acl': '#{options[:acl]}'},
        {'success_action_status': '201'},
        ['content-length-range', 0, #{options[:max_filesize]}],
        ['starts-with', '$key', ''],
        ['starts-with', '$Content-Type', ''],
        ['starts-with', '$name', ''],
        ['starts-with', '$Filename', '']
      ]
    }").gsub(/\n|\r/, '')

  signature = Base64.encode64(
                OpenSSL::HMAC.digest(
                  OpenSSL::Digest::Digest.new('sha1'),
                  secret_access_key, policy)).gsub("\n","")

  out = ""

  out << javascript_tag("$(function() {
  
    /*
     * S3 Uploader instance
    */
      	var applicious_uploader = new plupload.Uploader({
          preinit : {
            UploadFile: function(up, file) {
              up.settings.multipart_params.key = 'uploads/#{filename_token}.' + file.name.split('.').pop();
              up.settings.multipart_params.Filename = 'uploads/#{filename_token}.' + file.name.split('.').pop();
            }
          },
          
          
          runtimes : 'flash,silverlight',
          browse_button : '#{options[:button_id]}',
          max_file_size : '500mb',
          url : 'http://#{bucket}.s3.amazonaws.com/',
          flash_swf_url: '/applicious/plupload/plupload.flash.swf',
          silverlight_xap_url: '/applicious/plupload/plupload.silverlight.xap',
          multi_selection: false,

			//resize : {width : 320, height : 240, quality : 90},

          multipart: true,
          multipart_params: {
      			'acl': '#{options[:acl]}',
      			'Content-Type': '#{options[:content_type]}',
      			'success_action_status': '201',
      			'AWSAccessKeyId' : '#{access_key_id}',
      			'policy': '#{policy}',
      			'signature': '#{signature}'
           },
          filters : [
              {title : '#{options[:filter_title]}', extensions : '#{options[:filter_extensions]}'}
          ],
          file_data_name: 'file'
      });
	
	AP.Uploader.init( applicious_uploader, '#{filename_token}' )
  });")
  
end