Module: Base64Image::ClassMethods

Defined in:
lib/base64_image.rb

Instance Method Summary collapse

Instance Method Details

#base64_to_binary(string_image_data) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/base64_image.rb', line 19

def base64_to_binary(string_image_data)
  if String(string_image_data).match(%r{^data:(.*?);(.*?),(.*)$})
    # $1 - MIME, e.g. "image/png"
    # $2 - encoder, e.g. "base64"
    # $3 - encoded binary data
    binary_data = Base64.decode64($3)
    extension = $1.split('/')[1]
    io = StringIO.new(binary_data)

    # For carrierwave's attachments.
    io.class.class_eval do
      def original_filename
        "temp." << extension
      end
    end

    io
  end
end

#base64image_to(attr_name) ⇒ Object 



10
11
12
13
14
15
16
17
 
# File 'lib/base64_image.rb', line 10

def base64image_to(attr_name)
  dest_attr = String(attr_name) << '='
  source_attr = 'base64_' << dest_attr
  define_method source_attr do |data|
    send dest_attr, self.class.base64_to_binary(data)
  end
  self
end