Ruby on Rails uploading files

Question

I get this error after trying to save a file.

undefined method `original_filename' for "Screenshot from 2017-08-26 22-12-42.png":String

def upload
  uploaded_io = params[:person][:picture]
  File.open(Rails.root.join('public', 'uploads', uploaded_io.original_filename), 'wb') do |file|
    file.write(uploaded_io.read)
  end
end

And that's my request parameters

{"utf8"=>"✓",
 "authenticity_token"=>"JqTuIpsrX/rfJ2/r74EbLjuWI/UlxpxpEWnX64ruRjO/UQfrDk/q/MhVLNOG16YJOBxmt84t4tfw4YZDFbRIzQ==",
 "description"=>{"position"=>"5", "title"=>"title", "short_description"=>"qweqwe", "long_description"=>"qweqwe"},
 "photos"=>{"photo"=>"Screenshot from 2017-08-26 22-12-42.png"},
 "button"=>""}

Answer 1

I recommend using carrierwave to perform file upload. The way to use it is supremely simple, and has different tools for its handling.

You can implement this gem with the following guide:

https://github.com/carrierwaveuploader/carrierwave/wiki/How-to:-use-carrierwave-with-devise

Answer 2

First I would like to thank @kiddorails for his help.

The documentation here is pretty clear " http://guides.rubyonrails.org/form_helpers.html#uploading-files ", the problem was in view file where I haven't put below helper inside the form,

<%= f.file_field :picture %>

as show in the documentation.

<%= form_for @person do |f| %>
<%= f.file_field :picture %>
<% end %>