How to set all attributes to UploadedFile in Rails 4 - ruby-on-rails

Question

I've an API and I send a image from Angular Client in Base64, I've the next code for my method create:
if params[:profile][:picture]
picture_params = params[:profile][:picture]
#Create new Temporal File
temp_file = Tempfile.new("file_to_upload")
temp_file.binmode
temp_file.write(Base64.decode64(picture_params["body"]))
#Create a new uploaded file
uploaded_file = ActionDispatch::Http::UploadedFile.new(
:tempfile => temp_file,
:original_filename => picture_params[:name])
#After replace picture with the new uploaded file
params[:profile][:picture] = uploaded_file
Rails.logger.info "#{params[:profile]}"
end
#profile = #current_user.build_profile(profile_params)
if #profile.save
render "api/v1/profiles/show"
else
errors_array!(#profile.errors.full_messages, :unprocessable_entity)
end
After when I print my params the information is nil
"picture"=>#<ActionDispatch::Http::UploadedFile:0x007f872daac5b0 #tempfile=#<Tempfile:/var/folders/nx/30024wp17ggfgw542lyzs4zw0000gn/T/file_to_upload20160225-14952-by947r>, #original_filename=nil, #content_type=nil, #headers=nil>}
And after when try to create the profile I've the next error, I think that is for the previous problem
NoMethodError (undefined method `gsub' for nil:NilClass):
app/controllers/api/v1/profiles_controller.rb:39:in `create'
I use the paperclip gem for upload files in Rails 4.2.5.1

Answer 1

Thanks for watching, but Have a solution, I changed my method:
def set_selfies(selfie_params)
picture_params = selfie_params
encoded_picture = picture_params[:body]
content_type = picture_params[:content_type]
image = Paperclip.io_adapters.for("#{encoded_picture}")
image.original_filename = picture_params[:name]
image
end
I Read this Blog:
And That's all, works for me, Thanks :D