Decoration of namespaced models

[commel]

I am using the Version-model of PaperClip (https://github.com/thoughtbot/paperclip) to show historifed data. Loving the decoration draper-gem I want to use it as well. :-)

Everything worked fine, except till the moment when PaperClip decided to move the Version-Model-Class to a Namespace. Now I have to access PaperClip::Version.

How do I tell Draper this?? He keeps missing the model

Draper::UninferrableDecoratorError (Could not infer a decorator for PaperTrail::Version.):
  app/controllers/welcome_controller.rb:18:in `decorate'
  app/controllers/welcome_controller.rb:7:in `index'

[tygriffin]

I'm having the same issue with the public_activity gem (https://github.com/pokonski/public_activity)

[TylerRick]

This might be a separate issue (my issue was related to PaperTrail, not PaperClip), but with the issue I was running into, the solution was to change the decorates line in my VersionDecorator from:

  decorates :version

to:

  decorates :'paper_trail/version'

Maybe you just need to add an explicit decorates line somewhere?

[tygriffin]

Not sure if this is helpful but I ended up adding:
decorates PublicActivity::Activity

Here's a link to my question on SO:
http://stackoverflow.com/questions/20803784/public-activity-gem-decorated-with-draper

[TylerRick]

Nice. Looks like decorates accepts either a symbol or a class. The symbol is probably just converted to a class...

[commel]

Thank you all for your answers. I had to remove Papertrail in the mean time, but i will try to reproduce the problem and the noted fixes.

[amitpatelx]

Works well with specifying AR class with namespace

class CampaignDecorator < Draper::Decorator
  decorates Campaign::Campaign
  delegate_all
  def daily_budget_formatted
    number_to_currency(model.daily_budget, precision: 2)
  end
end

UPDATE
Getting following error after deploying on production environment

ActiveRecord::StatementInvalid (PG::Error: ERROR:  relation "campaigns" does not exist
LINE 5:              WHERE a.attrelid = '"campaigns"'::regclass
                                        ^
:             SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
              FROM pg_attribute a LEFT JOIN pg_attrdef d
                ON a.attrelid = d.adrelid AND a.attnum = d.adnum
             WHERE a.attrelid = '"campaigns"'::regclass
               AND a.attnum > 0 AND NOT a.attisdropped
             ORDER BY a.attnum
):

[jcasimir]

Going to remove the idea of automatic inference, so closing this issue.