How to attach Base64 image to Active Storage object?
base64, rails-activestorage, ruby, ruby-on-rails, ruby-on-rails-5.2
Solution
Thanks to @tadman, `data:image/png;base64,` part can't be handled by `Base64.decode64` when I stripped it off everything worked fine.
Problem
I can attach a png image from disc by and everything works just fine: ``` obj.attachment.attach( io: File.open('dog.png'), filename: "image_name", content_type: "image/png" ) ``` But it doesn't work giving result like too tiny empty square when I save a Base64 png image which encoded into `String` something like that `"data:image/png;base64,iVB**..REST OF DATA..**kSuQmCC"` by: ``` obj.attachment.attach( io: StringIO.new(encoded_base_sixty_four_img), filename: "image_name", content_type: "image/png" ) ``` Also I tried to decoded it but gives the same error: ``` decoded_base_sixty_four_img = Base64.decode64(encoded_base_sixty_four_img) obj.attachment.attach( io: StringIO.new(decoded_base_sixty_four_img), filename: "image_name", content_type: "image/png" ) ``` Also tried writing this decoded value into a `File` but nothing worked too giving blank image result: ``` file = file.write(decoded_base_sixty_four_img) obj.attachment.attach( io: file, filename: "image_name", content_type: "image/png" ) ``` So any other thoughts?