def s3_cors_fileupload_form_tag(options = {}, &block)
      policy_helper = PolicyHelper.new(options)
      # initialize the hidden form fields
      hidden_form_fields = {
        :key => '',
        'Content-Type' => '',
        :AWSAccessKeyId => options[:access_key_id] || Config.access_key_id,
        :acl => policy_helper.options[:acl],
        :policy => policy_helper.policy_document,
        :signature => policy_helper.upload_signature,
        :success_action_status => '201'
      }
      # assume that all of the non-documented keys are 
      _html_options = options.reject { |key, val| [:access_key_id, :acl, :max_file_size, :bucket, :secure].include?(key) }
      # return the form html
      construct_form_html(hidden_form_fields, policy_helper.options[:bucket], options[:secure], _html_options,  &block)
    end
def s3_cors_fileupload_form_tag(options = {}, &block)
      policy_helper = PolicyHelper.new(options)
      # initialize the hidden form fields
      hidden_form_fields = {
        :key => '',
        'Content-Type' => '',
        :AWSAccessKeyId => options[:access_key_id] || Config.access_key_id,
        :acl => policy_helper.options[:acl],
        :policy => policy_helper.policy_document,
        :signature => policy_helper.upload_signature,
        :success_action_status => '201'
      }
      # assume that all of the non-documented keys are 
      _html_options = options.reject { |key, val| [:access_key_id, :acl, :max_file_size, :bucket, :secure].include?(key) }
      # return the form html
      construct_form_html(hidden_form_fields, policy_helper.options[:bucket], options[:secure], _html_options,  &block)
    end
Options:
 :access_key_id    The AWS Access Key ID of the owner of the bucket.
                   Defaults to the `Config.access_key_id` (read from the yaml config file).

 :acl              One of S3's Canned Access Control Lists, must be one of:
                   'private', 'public-read', 'public-read-write', 'authenticated-read'.
                   Defaults to `'public-read'`.

 :max_file_size    The max file size (in bytes) that you wish to allow to be uploaded.
                   Defaults to `Config.max_file_size` or, if no value is set on the yaml file `524288000` (500 MB)

 :bucket           The name of the bucket on S3 you wish for the files to be uploaded to.
                   Defaults to `Config.bucket` (read from the yaml config file).

 :secure           Dictates whether the form action URL will be pointing to a secure URL or not.
                   Defaults to `true`.

 Any other key creates standard HTML options for the form tag.