Base64 Photo and Paperclip -Rails

Use paperclip for saving base64 images obtained from an api

To answer my own question, here is what I've come up with:

class Photo < ActiveRecord::Base

  before_validation :set_image

  has_attached_file :image, styles: { thumb: "x100>" }
  validates_attachment :image, presence: true, content_type: { content_type: ["image/jpeg", "image/jpg"] }, size: { in: 0..10.megabytes }

  def set_image
    StringIO.open(Base64.decode64(image_json)) do |data|
      data.class.class_eval { attr_accessor :original_filename, :content_type }
      data.original_filename = "file.jpg"
      data.content_type = "image/jpeg"
      self.image = data
    end
  end

end

image_json is a text field containing the actual base64 encoded image (just the data part, eg "/9j/4AAQSkZJRg...")

Upload base64 encoded image with paperclip - Rails

This is my solution, using Paperclip.io_adapters.for(image) where image is base64 string.

def create_image image, image_name, cat
  signature = Paperclip.io_adapters.for(image)
  base_name = File.basename(image_name,File.extname(image_name))
  signature.original_filename = "#{base_name}.jpg"
  media_img = Media::Image.new()
  media_img.image = signature
  media_img.company_id = current_company_id
  media_img.type = cat
  media_img.save
end

base 64 photo to paperclip rails image

This seems to work, but I am still working on testing differing image types.

@new_image = Stand.create(:user_id => @user.id)
encoded_picture = params[:image_data]
content_type = "image/jpg"
image = Paperclip.io_adapters.for("data:#{content_type};base64,#{encoded_picture}")
image.original_filename = "new_image.jpg"
@new_image.avatar = image
@new_image.save
@new_image.cover_image_url = @new_image.avatar.url
@new_image.save

I have upvoted the previous answer because it helped me find other resources, but it does not contain an answer for my scenario.

base64 photo and paperclip -Rails

Make sure that the StringIO you are using is the paperclip opened one. https://github.com/thoughtbot/paperclip/blob/master/lib/paperclip/upfile.rb

 sio = StringIO.new(Base64.decode64(string))
 puts sio.respond_to?(:original_filename)
 puts sio.respond_to?(:content_type)

It needs to have those methods in order to have paperclip work with StringIO. Make sure it is setting them.

Upload base64 Image with Paperclip - Rails 4

Assuming that you're using the Rails form helpers over in your view, and based on your form_params list, the :base64 key won't be at the top level of your params hash, but rather one level down at params[:form][:base64]

base64 decoding by paperclip in rails 3

In order to save image with correct extension you have to specify content type.
It's quite nice to have this in your model as method which is called before_validation

   StringIO.open(Base64.decode64(self.photo_base64)) do |data|
      data.original_filename = "image_name.jpg"
      data.content_type = "image/jpeg"
      self.photo = data
    end

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