Uploading base64 through Paperclip

Question

Paperclip is used for image uploads. Images uploaded in base64 form as follows:

class Photo < ActiveRecord::Base

  before_save :set_image
  attr_accessor :picture_data

  has_attached_file :image
  validates_attachment_content_type :image, :content_type => %w(image/jpeg image/jpg image/png)

  def set_image
    unless self.picture_data.nil?
      data = StringIO.new(Base64.decode64(self.picture_data))
      self.image = data
      self.picture_data = nil
    end
  end

end

Paperclip correctly recognizes the content_type of the base64 passed but content_type validation is not happening. It saves whatever the file comes.

Can anyone please help me through this?!

Answer 1

You need to use the before_validation callback instead of before_save.