Module: AwsUpload::FormHelper

Extended by:
FormHelper
Included in:
FormHelper
Defined in:
lib/aws_upload/form_helper.rb

Overview

This module creates aws direct upload form helper

Examples

Generate a form to upload a file with the name of “uploaded_file.jpg” <%= aws_upload_form(:image, “uploaded_file.jpg”) %>

Generate a form to upload a file with the uploaded file name <%= aws_upload_form(:image, “$filename”) %>

You can specify options. It will override the options specified in the configuration. <%= aws_upload_form(:image, “uploaded_file.jpg”, acl: “private”, metadata: ‘${filename’) %>

You can customize file and submit input by giving a block. <%= aws_upload_form(:image, “uploaded_file.jpg”) do %>

<input type="file" name="file">
<input type="submit" value="Upload">

<% end %>

Instance Method Summary collapse

Instance Method Details

#aws_upload_form(name, object_key, options = {}) ⇒ Object 



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
 
# File 'lib/aws_upload/form_helper.rb', line 25

def aws_upload_form(name, object_key, options={})
  # Load credentials
  if AwsUpload.aws_access_key_id
    creds = Aws::Credentials.new(AwsUpload.aws_access_key_id, AwsUpload.aws_secret_access_key)
  else
    # Use shared credentials if aws_access_key_id is not specified
    creds = Aws::SharedCredentials.new()
  end

  region = AwsUpload.aws_region

  uploader = AwsUpload.uploader(name)
  opts = uploader.options.deep_merge(options)
  opts[:key] = uploader.key_prefix + object_key

  post = Aws::S3::PresignedPost.new(creds, region, uploader.bucket, opts)
  form = "<form action='#{post.url.to_s}' method='post' enctype='multipart/form-data'>\n"
  post.fields.each do |key, value|
    form << "\t<input type='hidden' name='#{key}' value='#{value}'>\n"
  end

  # render file and submit inputs. yield block if a block is given.
  if block_given?
    form << yield
  else
    form << "\t<input type='file' name='file'>\n"
    form << "\t<input type='submit' value='upload'>\n"
  end

  form << "</form>"
  form.html_safe
end