Question

I’m trying to use the paperclip-dropbox gem here, and I’m having issues with the setup and passing my credentials.

In the documentation, the setup in the model is done like so:

class User < ActiveRecord::Base
  has_attached_file :avatar,
   :storage => :dropbox,
   :dropbox_credentials => "#{Rails.root}/config/dropbox.yml",
   :dropbox_options => {...}
end

I have configured my dropbox.yml file and put in the /config folder but rails is telling me the file or directory doesn’t exist.

If I pass my credentials in the hash with the environment variables,

:dropbox_credentials => {
                  app_key: ENV["DROPBOX_APP_KEY"],
                  app_secret: ENV["DROPBOX_APP_SECRET"],
                  access_token: ENV["DROPBOX_ACCESS_TOKEN"],
                  access_token_secret: ENV["DROPBOX_ACCESS_TOKEN_SECRET"],
                  user_id: ENV["DROPBOX_USER_ID"]
                }
:dropbox_options => {
                  :path => ":attachment/:id/:basename.:extension"
                }

The top of the stack trace is:

paperclip-dropbox (1.0.0) lib/paperclip/storage/dropbox.rb:59:in `path_for_url'
paperclip-dropbox (1.0.0) lib/paperclip/storage/dropbox.rb:55:in `path'
paperclip-dropbox (1.0.0) lib/paperclip/storage/dropbox.rb:41:in `exists?'
paperclip (3.2.0) lib/paperclip/attachment.rb:436:in `block in queue_all_for_delete'
paperclip (3.2.0) lib/paperclip/attachment.rb:435:in `map'
paperclip (3.2.0) lib/paperclip/attachment.rb:435:in `queue_all_for_delete'
paperclip (3.2.0) lib/paperclip/attachment.rb:213:in `clear'
paperclip (3.2.0) lib/paperclip/attachment.rb:94:in `assign'
paperclip (3.2.0) lib/paperclip.rb:196:in `block in has_attached_file'
activerecord (3.2.6) lib/active_record/attribute_assignment.rb:85:in `block in       assign_attributes'
activerecord (3.2.6) lib/active_record/attribute_assignment.rb:78:in `each'
activerecord (3.2.6) lib/active_record/attribute_assignment.rb:78:in `assign_attributes'
activerecord (3.2.6) lib/active_record/persistence.rb:212:in `block in   update_attributes'
activerecord (3.2.6) lib/active_record/transactions.rb:295:in `block in   with_transaction_returning_status'
activerecord (3.2.6)  lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
activerecord (3.2.6) lib/active_record/transactions.rb:208:in `transaction'
activerecord (3.2.6) lib/active_record/transactions.rb:293:in  `with_transaction_returning_status'
activerecord (3.2.6) lib/active_record/persistence.rb:211:in `update_attributes'
app/controllers/users_controller.rb:45:in `update'

then rails says “wrong argument type String expected Proc”

I’m new to ruby and don’t quite understand procs. How do I fix this to get it to work?

Answer 1

According to the readme, paperclip-dropbox expects a proc for the path. Does the :avatar parameter in your path mean anything, or is that meant to be a static portion?

I think you need to try something like this:

:path => proc { |style| "avatars/#{id}/#{style}/#{avatar.original_filename}" }

You also can try it without the |style| variable, but you might get a wrong number of arguments error. Typically, one would define additional styles to automatically scale images to the sizes you need on your site – have a look at the docs for more info.